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CX93011 CSMxx
V.92/V.34/V.32bis Controllered Serial
Modem with CX20548 SmartDAA®
Data Sheet
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Dissemination, disclosure, or use of this information is not permitted
without the written permission of Conexant Systems, Inc.
Doc. No. 102635F
May 22, 2006
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
Revision Record
Revision
A
B
C
D
E
F
Date
6/21/2005
7/15/2005
3/30/2006
4/18/2006
4/25/2006
5/22/2006
Comments
Initial release.
Rev. B release.
Rev. C release.
Rev. D release.
Rev. E release.
Rev. F release.
© 2005, 2006 Conexant Systems, Inc.
All Rights Reserved.
Information in this document is provided in connection with Conexant Systems, Inc. (“Conexant”) products. These materials are
provided by Conexant as a service to its customers and may be used for informational purposes only. Conexant assumes no
responsibility for errors or omissions in these materials. Conexant may make changes to this document at any time, without notice.
Conexant advises all customers to ensure that they have the latest version of this document and to verify, before placing orders, that
information being relied on is current and complete. Conexant makes no commitment to update the information and shall have no
responsibility whatsoever for conflicts or incompatibilities arising from future changes to its specifications and product descriptions.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as
provided in Conexant’s Terms and Conditions of Sale for such products, Conexant assumes no liability whatsoever.
THESE MATERIALS ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,
RELATING TO SALE AND/OR USE OF CONEXANT PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO
FITNESS FOR A PARTICULAR PURPOSE, CONSEQUENTIAL OR INCIDENTAL DAMAGES, MERCHANTABILITY, OR
INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. CONEXANT FURTHER
DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS
CONTAINED WITHIN THESE MATERIALS. CONEXANT SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL,
OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS, WHICH MAY
RESULT FROM THE USE OF THESE MATERIALS.
Conexant products are not intended for use in medical, lifesaving or life sustaining applications. Conexant customers using or selling
Conexant products for use in such applications do so at their own risk and agree to fully indemnify Conexant for any damages
resulting from such improper use or sale.
The following are trademarks of Conexant Systems, Inc.: Conexant® and the Conexant C symbol, and SmartDAA®. Product names
or services listed in this publication are for identification purposes only, and may be trademarks of third parties. Third-party brands
and names are the property of their respective owners.
For additional disclaimer information, please consult Conexant’s Legal Information posted at www.conexant.com which is
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Reader Response: Conexant strives to produce quality documentation and welcomes your feedback. Please send comments and
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ii
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
Contents
Document Revision History .........................................................................................................................viii
1. Introduction..........................................................................................................................................1-1
1.1
1.2
1.3
1.4
1.5
Overview ......................................................................................................................................................................... 1-1
Features .......................................................................................................................................................................... 1-3
1.2.1
Applications.................................................................................................................................................... 1-4
Technical Overview......................................................................................................................................................... 1-5
1.3.1
General Description ........................................................................................................................................ 1-5
1.3.2
Embedded MCU Firmware.............................................................................................................................. 1-5
1.3.3
Operating Modes ............................................................................................................................................ 1-5
1.3.3.1 Data/Fax Modes.............................................................................................................................. 1-5
1.3.3.2 V.44 Data Compression.................................................................................................................. 1-6
1.3.3.3 Synchronous Access Mode (SAM) - Video Conferencing .............................................................. 1-6
1.3.3.4 TAM Mode ...................................................................................................................................... 1-6
1.3.3.5 Worldwide Operation...................................................................................................................... 1-6
1.3.4
Reference Designs.......................................................................................................................................... 1-8
Hardware Description ..................................................................................................................................................... 1-8
1.4.1
CX93011 Modem............................................................................................................................................ 1-8
1.4.2
Digital Isolation Barrier................................................................................................................................... 1-9
1.4.3
CX20548 SmartDAA Line Side Device............................................................................................................ 1-9
Commands ..................................................................................................................................................................... 1-9
2. Technical Specifications .......................................................................................................................2-1
2.1
2.2
2.3
102635F
Serial DTE Interface Operation........................................................................................................................................ 2-1
2.1.1
Automatic Speed/Format Sensing .................................................................................................................. 2-1
Establishing Data Modem Connections .......................................................................................................................... 2-2
2.2.1
Dialing ............................................................................................................................................................ 2-2
2.2.2
Modem Handshaking Protocol ....................................................................................................................... 2-2
2.2.3
Call Progress Tone Detection ......................................................................................................................... 2-2
2.2.4
Answer Tone Detection................................................................................................................................... 2-2
2.2.5
Ring Detection................................................................................................................................................ 2-2
2.2.6
Billing Protection ............................................................................................................................................ 2-2
2.2.7
Connection Speeds......................................................................................................................................... 2-3
2.2.8
Automode ....................................................................................................................................................... 2-3
Data Mode ...................................................................................................................................................................... 2-3
2.3.1
Speed Buffering (Normal Mode) .................................................................................................................... 2-3
2.3.2
Flow Control ................................................................................................................................................... 2-4
2.3.3
Escape Sequence Detection............................................................................................................................ 2-4
2.3.4
BREAK Detection ............................................................................................................................................ 2-4
Conexant Proprietary and Confidential Information
iii
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
2.13
2.14
2.15
2.16
2.3.5
Telephone Line Monitoring............................................................................................................................. 2-4
2.3.6
Fall Forward/Fallback (V.92/V.90/V.34/V.32bis/V.32) .................................................................................... 2-4
2.3.7
Retrain ............................................................................................................................................................ 2-4
2.3.8
Programmable Inactivity Timer ...................................................................................................................... 2-4
2.3.9
DTE Signal Monitoring (Serial DTE Interface Only)........................................................................................ 2-5
2.3.10
Call Progress Speaker Interface ..................................................................................................................... 2-5
2.3.11
Serial EEPROM Interface ................................................................................................................................ 2-5
V.92 Features (V.92 Model)............................................................................................................................................ 2-5
2.4.1
Modem-on-Hold ............................................................................................................................................. 2-5
2.4.2
Quick Connect ................................................................................................................................................ 2-6
2.4.3
PCM Upstream ............................................................................................................................................... 2-6
Error Correction and Data Compression......................................................................................................................... 2-6
2.5.1
V.42 Error Correction ..................................................................................................................................... 2-6
2.5.2
MNP 2-4 Error Correction .............................................................................................................................. 2-6
2.5.3
V.44 Data Compression.................................................................................................................................. 2-6
2.5.4
V.42bis Data Compression ............................................................................................................................. 2-6
2.5.5
MNP 5 Data Compression .............................................................................................................................. 2-7
Voice/Audio Mode .......................................................................................................................................................... 2-7
2.6.1
Online Voice Command Mode ........................................................................................................................ 2-7
2.6.2
Voice Receive Mode ....................................................................................................................................... 2-7
2.6.3
Voice Transmit Mode ..................................................................................................................................... 2-7
2.6.4
Full-Duplex Receive and Transmit Mode ........................................................................................................ 2-7
2.6.5
Audio Mode .................................................................................................................................................... 2-8
2.6.6
Tone Detectors ............................................................................................................................................... 2-8
V.80 Synchronous Access Mode (SAM) ........................................................................................................................ 2-8
Telephony Extensions..................................................................................................................................................... 2-8
2.8.1
Line-in-Use Detection..................................................................................................................................... 2-8
2.8.2
Extension Pick-up Detection........................................................................................................................... 2-8
2.8.3
Remote Hang-up Detection ............................................................................................................................ 2-9
Point-of-Sales Support ................................................................................................................................................... 2-9
Fax Class 1 and Fax Class 1.0 Operation ........................................................................................................................ 2-9
Tone Detectors ............................................................................................................................................................... 2-9
Call Waiting Tone Detection............................................................................................................................................ 2-9
Caller ID .......................................................................................................................................................................... 2-9
Worldwide Country Support ......................................................................................................................................... 2-10
Diagnostics ................................................................................................................................................................... 2-10
Low Power Modes........................................................................................................................................................ 2-11
2.16.1
Idle Mode...................................................................................................................................................... 2-11
2.16.2
Sleep Mode................................................................................................................................................... 2-11
2.16.3
Deep Sleep Mode.......................................................................................................................................... 2-11
2.16.4
Stop Mode .................................................................................................................................................... 2-11
3. Hardware Interface ...............................................................................................................................3-1
3.1
iv
CX93011 Modem Hardware Interface Signals................................................................................................................ 3-1
3.1.1
CX93011 Modem Interface Signal Summary ................................................................................................. 3-1
3.1.1.1 LSD Interface (Through DIB).......................................................................................................... 3-1
3.1.1.2 Call Progress Speaker Interface ..................................................................................................... 3-1
3.1.1.3 Clock Select Interface ..................................................................................................................... 3-1
3.1.1.4 Serial EEPROM Interface ................................................................................................................ 3-1
3.1.1.5 Serial DTE Interface and Indicator Outputs .................................................................................... 3-1
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
3.2
3.3
3.4
3.1.2
CX93011 Modem Pin Assignments and Signal Definitions............................................................................ 3-2
3.1.3
CX93011 Modem Electrical Characteristics.................................................................................................... 3-6
CX20548 LSD Hardware Pins and Signals ..................................................................................................................... 3-7
3.2.1
General ........................................................................................................................................................... 3-7
3.2.1.1 Host Side Device (HSD) Interface (Through DIB) .......................................................................... 3-7
3.2.1.2 Power and Ground ......................................................................................................................... 3-7
3.2.1.3 Telephone Line Interface ................................................................................................................ 3-7
3.2.1.4 Voltage References......................................................................................................................... 3-7
3.2.1.5 General Purpose Input/Output........................................................................................................ 3-7
3.2.2
Pin Assignments and Signal Definitions......................................................................................................... 3-8
Operating Conditions, Absolute Maximum Ratings, and Power Requirements ........................................................... 3-12
Crystal and Clock Specifications................................................................................................................................... 3-14
4. Package Dimensions ............................................................................................................................4-1
5. Recommended QFN Surface Mount Land Patterns...............................................................................5-1
102635F
Conexant Proprietary and Confidential Information
v
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
Figures
Figure 1-1. CSMxx Modem Simplified Interface Diagram................................................................................................................... 1-2
Figure 3-1. CX93011 Modem Hardware Interface Signals.................................................................................................................. 3-2
Figure 3-2. CX93011 Modem 20-Pin QFN Pin Signals........................................................................................................................ 3-3
Figure 3-3. CX20548 LSD Hardware Interface Signals ....................................................................................................................... 3-8
Figure 3-4. CX20548 LSD 16-Pin QFN Pin Signals ............................................................................................................................. 3-9
Figure 4-1. Package Dimensions for 20-Pin QFN................................................................................................................................ 4-2
Figure 4-2. Package Dimensions for 16-Pin QFN................................................................................................................................ 4-3
Figure 5-1. Recommended Surface Mount Land Pattern for 20-Pin QFN........................................................................................... 5-1
Figure 5-2. Recommended Surface Mount Land Pattern for 16-Pin QFN........................................................................................... 5-2
vi
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
Tables
Table 1-1. CSMxx Modem Models and Functions............................................................................................................................... 1-2
Table 1-2. Default Countries Supported.............................................................................................................................................. 1-7
Table 2-1. +MS Command Automode Connectivity ............................................................................................................................ 2-3
Table 3-1. CX93011 Modem 20-Pin QFN Pin Signals ......................................................................................................................... 3-3
Table 3-2. CX93011 Modem Hardware Signal Definitions.................................................................................................................. 3-4
Table 3-3. CX93011 Modem I/O Type Definitions............................................................................................................................... 3-6
Table 3-4. CX93011 Modem DC Electrical Characteristics ................................................................................................................. 3-6
Table 3-5. CX20548 LSD 16-Pin QFN Pin Signals .............................................................................................................................. 3-9
Table 3-6. CX20548 LSD Hardware Signal Definitions ..................................................................................................................... 3-10
Table 3-7. CX20548 LSD GPIO DC Electrical Characteristics............................................................................................................ 3-11
Table 3-8. CX20548 LSD AVDD and DVDD DC Electrical Characteristics......................................................................................... 3-11
Table 3-9. CX93011 Modem Operating Conditions........................................................................................................................... 3-12
Table 3-10. Absolute Maximum Ratings........................................................................................................................................... 3-12
Table 3-11. CX93011 Current and Power Requirements .................................................................................................................. 3-13
Table 3-12. Crystal Specifications..................................................................................................................................................... 3-14
Table 3-13. Clock Specifications ....................................................................................................................................................... 3-14
102635F
Conexant Proprietary and Confidential Information
vii
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
Document Revision History
Incorporated in Doc. No. 102635A – 102635E
Preliminary releases.
Incorporated in Doc. No. 102635F
Revised Section 2.16, Table 3-11, and Figure 4-1.
viii
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
1.
Introduction
1.1
Overview
The Conexant® CSMxx V.92 Modem supports V.92 analog data modem operation and
14.4 kbps fax modem operation. In addition, the modem supports remote telephone
answering machine (TAM). The modem also supports V.44/V.42bis/MNP 5 data
compression for greater data throughput and V.42 LAPM/MNP2-4 error correction
protocol for increased data integrity and reliability. Table 1-1 lists the ordering
information.
The CSMxx device set consists of a CX93011 V.92/V.34/V.32bis Modem device in a
20-pin QFN and a CX20548 SmartDAA® 4 Line Side Device (LSD) in a 16-pin QPN.
The CX93011 has a serial interface.
The CX93011 modem device integrates a microcontroller (MCU), a digital signal
processor (DSP), internal RAM, internal ROM, and a SmartDAA system side device
(SSD) onto a 20-pin QFN. Figure 1-1 illustrates the top-level modem interface
connection.
Conexant’s SmartDAA technology used in the SmartDAA 4 LSD eliminates the need for
bulky analog transformers, relays, and opto-isolators typically used in discrete DAA
implementations. The SmartDAA 4 LSD operates without drawing power from the phone
line, unlike line-powered DAAs, and is therefore not subject to variations in line voltage
conditions. The SmartDAA 4 LSD also adds enhanced telephony extension features to
the modem’s operation and other functions such as Call Waiting detection, and Caller ID
decoding. Incorporating Conexant’s proprietary Digital Isolation Barrier (DIB) design
and other innovative DAA features, the SmartDAA architecture simplifies application
design and minimizes layout area to reduce design cost.
In TAM mode, enhanced 2-bit or 4-bit per sample coding schemes at 8 kHz sample rate
provide flexible format compatibility and allows efficient digital storage of voice/audio.
Also supported are 8-bit A-law, μ-law, and linear coding and IMA 4-bit ADPCM coding.
This mode supports applications such as digital telephone answering machine, voice
annotation, and recording from and playback to the telephone line.
The modem operates by executing masked code from internal ROM. The modem features
internal RAM memory that enhances the modem's flexibility. The modem's internal
RAM can be used to load new country profiles, override existing country profiles or add
customized firmware code. An optional external serial NVRAM is supported. The
optional external NVRAM adds the convenience of permanent storage, just like internal
RAM, NVRAM can be used to store new country profiles, override existing ones or add
customized firmware code.
Small, low-profile packages, reduced voltage operation, and low power consumption
make this device set an ideal solution for embedded applications.
102635F
Conexant Proprietary and Confidential Information
1-1
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
Table 1-1. CSMxx Modem Models and Functions
Model/Order/Part Numbers
Marketing Name
Device Set
Order No.
Modem Device
[20-Pin QFN]
Part No.
Supported Functions
Line Side Device (LSD)
[16-Pin QFN]
Part No.
V.92/V.90/ Data
V.34 Data
V.32bis Data,
V.17 Fax, TAM,
Worldwide
CSM92
DS92-CSM-11Z
CX93011-11Z
CX20548-11Z (Note 3)
Y
Y
Y
CSM34
DS34-CSM-11Z
CX93011-12Z
CX20548-11Z (Note 3)
—
Y
Y
CSM32bis
DS32-CSM-11Z
CX93011-13Z
CX20548-11Z (Note 3)
—
—
Y
Notes:
1. Supported functions (Y = Supported; — = Not supported).
2. All devices are lead-free (Pb-free) and RoHS-compliant. These devices are compatible with leaded reflow processes.
3. Device is marked 20548-A
Figure 1-1. CSMxx Modem Simplified Interface Diagram
CX93011 Modem
20-Pin QFN
Serial
Interface
28.224 MHz
or
27.000 MHz
Crystal orClock
Source
DTE/Host
Interface
RAM
Digital Isolation
Barrier (DIB)
MCU/DSP/
SmartDAA
Interface
DAA Hardware
CX20548
SmartDAA 4
Line Side Device (LSD)
16-Pin QFN
Line Side
DIB
Interface
(LSDI)
Codec
Telephone
Line
Interface
External
Discrete
Components
Telephone
Line
TIP
RING
Optional
NVRAM
ROM
102635_001
1-2
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
1.2
Features
•
•
•
•
•
•
•
•
•
•
•
102635F
Modulations and protocols
− ITU-T V.92 (V.92 model)
♦ Modem-on-Hold (MOH)
♦ Quick connect (QC)
♦ PCM upstream
− V.90 (V.92 model)
− V.34 (V.92 and V.34 models)
− V.32bis, V.32, V.22bis, V.22, V.23, V.21
− V.23 reverse, V.23 half-duplex
− Bell 212A/Bell 103
− V.29 FastPOS
− V.22bis fast connect
− V.80 Synchronous Access Mode
Data compression and error correction
− V.44 data compression (V.92 model)
− V.42bis and MNP 5 data compression
− V.42 LAPM and MNP 2-4 error correction
Fax modem send and receive rates up to 14.4 kbps
− V.17, V.29, V.27 ter, and V.21 channel 2
− EIA/TIA 578 Class 1 and T.31 Class 1.0
Call Waiting (CW) detection and Type II Caller ID decoding during data mode
Type I Caller ID (CID) decoding
Telephony/TAM
− V.253 commands
− 2-bit and 4-bit ADPCM, 4-bit IMA ADPCM, 8-bit and 16-bit linear PCM, and
8-bit μ-law and A-law PCM coding
− 8 kHz sample rate
− Concurrent DTMF, ring, and Caller ID detection
DTE/host interface
− Serial DTE interface
− Direct Mode
− Asynchronous Mode
No external memory required
Sixty-three embedded and upgradeable country profiles
Serial NVRAM interface for optional permanent country profile storage
Embedded AT commands
Conexant Proprietary and Confidential Information
1-3
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
•
•
•
•
•
1.2.1
Applications
•
•
•
•
•
•
1-4
SmartDAA
− Extension pick-up detection
− Digital line protection
− Line reversal detection
− Line-in-use detection
− Remote hang-up detection
− Worldwide compliance
Selectable 28.224 MHz or 27.000 MHz frequency of operation
Low power and voltage
− Single +3.3V supply
− Low power consumption mode
− +3.3V I/O level
Compact, robust board design
− Small, low-profile modem packages
− SmartDAA and DIB technologies
− Reference design supports 5 kV isolation
Small packages
− CX93011 Modem: 20-pin QFN
− CX20548 LSD: 16-pin QFN
Set top boxes
Point-of-Sale terminals
ATM machines
Metering terminals
Video game consoles
Internet appliances
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
1.3
Technical Overview
1.3.1
General Description
Modem operation, including dialing, call progress, telephone line interface, telephone
handset interface, and host DTE interface functions are supported and controlled through
the V.250 and V.253-compatible command set.
The OEM adds a crystal circuit, DIB components, telephone line interface, telephone
handset/telephony extension interface, and other supporting discrete components as
supported by the modem model (Table 1-1) and required by the application to complete
the system.
1.3.2
Embedded MCU Firmware
Embedded MCU firmware performs processing of general modem control, command
sets, data modem, error correction and data compression (ECC), worldwide, V.80, and
serial DTE host interface functions according to modem models (Table 1-1).
1.3.3
Operating Modes
1.3.3.1
Data/Fax Modes
Data modem modes perform complete handshake and data rate negotiations. Using
modem modulations to optimize modem configuration for line conditions, the modem
can connect at the highest data rate that the channel can support from 56 kbps down to
2400 bps with automatic fallback.`
In V.92 data modem mode (V.92 model), the modem can receive data from a digital
source using a V.92-compatible central site modem at line speeds up to 56 kbps. With
PCM upstream enabled, data transmission supports sending data at line speeds up to
48 kbps. When PCM upstream is disabled, data transmission supports sending data at
line speeds up to V.34 rates. This mode can fallback to V.34 mode and to lower rates as
dictated by line conditions.
The following modes in V.92 models are also supported when connected to a V.92compatible server supporting the feature listed.
102635F
•
Quick connect, which allows quicker subsequent connection to a server using stored
line parameters obtained during the initial connection. The server must support quick
connect profiles.
•
Modem-on-Hold, which allows detection and reporting of incoming phone calls on
the PSTN with enabled Call Waiting. If the incoming call is accepted by the user, the
user has a pre-defined amount of time of holding the data connection for a brief
conversation. The data connection resumes upon incoming call termination. The
server must support Modem-on-Hold functionality.
•
PCM upstream, which boosts the upstream data rates between the user and V.92
server. A maximum of 48 kbps upstream rate is supported when connected to a V.92
server that supports PCM upstream.
Conexant Proprietary and Confidential Information
1-5
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
In V.34 data modem mode (V.92 and V.34 models), the modem can operate in 2-wire,
full-duplex, asynchronous modes at line rates up to 33.6 kbps. Data modem modes
perform complete handshake and data rate negotiations. Using V.34 modulation to
optimize modem configuration for line conditions, the modem can connect at the highest
data rate that the channel can support from 33600 bps down to 2400 bps with automatic
fallback. Automode operation in V.34 is provided in accordance with PN3320 and in
V.32bis in accordance with PN2330. All tone and pattern detection functions required by
the applicable ITU or Bell standards are supported.
In V.32bis data modem mode, the modem can operate at line speeds up to 14.4 kbps.
In fax modem mode, the modem can operate in 2-wire, half-duplex, synchronous modes
and can support Group 3 facsimile send and receive speeds of 14400, 12000, 9600, 7200,
4800, and 2400 bps. Fax data transmission and reception performed by the modem are
controlled and monitored through the EIA/TIA-578 Fax Class 1, or T.31 Fax Class 1.0
command interface. Full HDLC formatting, zero insertion/deletion, and CRC
generation/checking are provided.
1.3.3.2
V.44 Data Compression
V.44 provides more efficient data compression than V.42bis that significantly decreases
the download time for the types of files associated with Internet use. This significant
improvement is most noticeable when browsing and searching the web since HTML text
files are highly compressible. (The improved performance amount varies both with the
actual format and with the content of individual pages and files.)
1.3.3.3
Synchronous Access Mode (SAM) - Video Conferencing
V.80 Synchronous Access Mode between the modem and the host/DTE is provided for
host-controlled communication protocols, e.g., H.324 video conferencing applications.
1.3.3.4
TAM Mode
TAM Mode features include 2-bit/4-bit ADPCM, 4-bit IMA ADPCM, 8-bit and 16-bit
linear PCM, and 8-bit μ-law and A-law PCM coding at 8 kHz sample rate. Tone
detection/ generation, call discrimination, and concurrent DTMF detection are also
supported.
TAM Mode is supported by four submodes:
•
•
•
•
1.3.3.5
Online Voice Command Mode supports connection to the telephone line.
Voice Receive Mode supports recording voice or audio data input from the telephone
line.
Voice Transmit Mode supports playback of voice or audio data to the telephone line.
Full-duplex Receive and Transmit Mode.
Worldwide Operation
The modem operates in TBR21-compliant and other countries. Country-dependent
modem parameters for functions such as dialing, carrier transmit level, calling tone, call
progress tone detection, answer tone detection, blacklisting, caller ID, and relay control
are programmable.
SmartDAA technology allows a single PCB design and single BOM to be homologated
worldwide. Advanced features such as extension pick-up detection, remote hang-up
detection, line-in-use detection, and digital PBX line protection are supported.
1-6
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
Country code IDs are defined by ITU-T T.35.
Internal ROM includes default profiles for 63 countries including TBR21-compliant
profiles. An additional or modified country profile can be loaded into internal SRAM. A
duplicate country profile stored in internal SRAM will override the profile in internal
ROM firmware. Additional country profiles can be loaded into external NVRAM for
permanent storage. The default countries supported are listed in Table 1-2. Request
additional country profiles from a Conexant Sales Office.
Table 1-2. Default Countries Supported
Country
Argentina
Australia
Austria
Belgium
Brazil
Bulgaria
Canada
Chile
China
Colombia
Croatia
Cyprus
Czech Republic
Denmark
Egypt
Estonia
Finland
France
Germany
Greece
Hong Kong
Hungary
Iceland
India
Indonesia
Ireland
Israel
Italy
Japan
Korea
Kuwait
Lebanon
Luxembourg
Malaysia
Mexico
Morocco
Netherlands
New Zealand
Norway
Pakistan
Philippines
Poland
102635F
Country
Code
7
9
0A
0F
16
1B
20
25
26
27
FA
2D
2E
31
36
F9
3C
3D
42
46
50
51
52
53
54
57
58
59
00
61
62
64
69
6C
73
77
7B
7E
82
84
89
8A
Call Waiting Tone
Detection (CW)
Supported
On-Hook Type 1
Caller ID (CID)
Supported
Off-Hook Type 2
Caller ID (CID2)
Supported
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Conexant Proprietary and Confidential Information
1-7
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
Country
Portugal
Romania
Russia
Saudi Arabia
Senegal
Singapore
Slovakia
Slovenia
South Africa
Spain
Sri Lanka
Sweden
Switzerland
Taiwan
Thailand
Tunisia
Turkey
UK
United Arab Emirates
Uruguay
USA
Reserved
1.3.4
Country
Code
8B
8E
B8
98
99
9C
FB
FC
9F
A0
A1
A5
A6
FE
A9
AD
AE
B4
B3
B7
B5
FD
Call Waiting Tone
Detection (CW)
Supported
X
On-Hook Type 1
Caller ID (CID)
Supported
Off-Hook Type 2
Caller ID (CID2)
Supported
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Reference Designs
A reference design is available to minimize modem design time, reduce development
cost, and accelerate market entry. The part number for this design is: RD02-D390-001.
A design package is available in electronic form. This package includes schematics, bill
of materials (BOM), vendor part list (VPL), board layout files in Gerber and PADS
formats, and complete documentation.
1.4
Hardware Description
1.4.1
CX93011 Modem
The CX93011 modem includes a Microcontroller (MCU), a Modem Data Pump (MDP),
internal ROM, internal RAM, and SmartDAA interface functions.
The modem connects to host via a logical V.24 (EIA/TIA-232-E) serial DTE interface.
The modem MCU/DSP performs the command processing, host interface functions and
telephone line signal modulation/demodulation which reduces computational load on the
host processor.
The SmartDAA Interface communicates with, and supplies power and clock to the LSD
through the DIB.
1-8
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
1.4.2
Digital Isolation Barrier
The OEM-supplied Digital Isolation Barrier (DIB) electrically DC isolates the CX93011
from the LSD and telephone line. The modem is connected to a fixed digital ground and
operates with standard CMOS logic levels. The LSD is connected to a floating ground
and can tolerate high voltage input (compatible with telephone line and typical surge
requirements).
The DIB transformer couples power and clock from the CX93011 to the LSD.
The DIB data channel supports bidirectional half-duplex serial transfer of data, control,
and status information between the CX93011 and the LSD over two lines.
1.4.3
CX20548 SmartDAA Line Side Device
The CX20548 SmartDAA 4 Line Side Device (LSD) includes a Line Side DIB Interface,
a coder/decoder (codec), and a Telephone Line Interface (TLI).
The Line Side DIB Interface communicates with, and receives power and clock from, the
SmartDAA 4 interface in the host side device (HSD) through the DIB transformer. The
clock signal passing through the transformer is rectified in the LSD and filtered using
external capacitors.
Information is transferred between the LSD and the HSD through the DIB transformer
using pulse width modulation
The TLI integrates DAA and direct telephone line interface functions and connects
directly to the line TIP and RING pins, as well as to external line protection components.
Direct LSD connection to TIP and RING allows real-time measurement of telephone line
parameters, such as the telephone central office (CO) battery voltage, individual
telephone line (copper wire) resistance, and allows dynamic regulation of the off-hook
TIP and RING voltage and total current drawn from the central office (CO). This allows
the modem to maintain compliance with U.S. and worldwide regulations.
1.5
Commands
The modem supports data modem and V.80 commands, and S Registers in accordance
with modem model options. See Doc. No. 102752 for a description of the commands.
Data Modem Operation. Data modem functions operate in response to the AT
commands when +FCLASS=0. Default parameters support U.S./Canada operation.
102635F
Conexant Proprietary and Confidential Information
1-9
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
This page is intentionally blank.
1-10
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
2.
Technical Specifications
2.1
Serial DTE Interface Operation
2.1.1
Automatic Speed/Format Sensing
Command Mode and Data Mode. The modem can automatically determine the speed
and format of the data sent from the DTE. The modem can sense speeds of 300, 600,
1200, 2400, 4800, 7200, 9600, 12000, 14400, 16800, 19200, 21600, 24000, 26400,
28800, 38400, 57600, and 115200 bps and the following data formats:
Data Length
No. of
Character Length
Parity
(No. of Bits)
Stop Bits
(No. of Bits)
None
7
2
10
Odd
7
1
10
Even
7
1
10
None
8
1
10
Odd
8
1
11*
Even
8
1
11*
*11-bit characters are sensed, but the parity bit is stripped off during
data transmission in Normal and Error Correction modes.
The modem can speed sense data with mark or space parity and configures itself as
follows:
DTE Configuration
7 mark
7 space
8 mark
8 space
102635F
Modem Configuration
7 none
8 none
8 none
8 even
Conexant Proprietary and Confidential Information
2-1
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
2.2
Establishing Data Modem Connections
2.2.1
Dialing
DTMF Dialing. DTMF dialing using DTMF tone pairs is supported in accordance with
ITU-T Q.23.
Pulse Dialing. Pulse dialing is supported in accordance with EIA/TIA-496-A.
Blind Dialing. The modem can blind dial in the absence of a dial tone if enabled by the
X0, X1, or X3 command.
2.2.2
Modem Handshaking Protocol
If a tone is not detected within the time specified in the S7 register after the last digit is
dialed, the modem aborts the call attempt.
2.2.3
Call Progress Tone Detection
Ringback, equipment busy, congested tone, warble tone, and progress tones can be
detected in accordance with the applicable standard.
2.2.4
Answer Tone Detection
Answer tone can be detected over the frequency range of 2100 ± 40 Hz in ITU-T modes
and 2225 ± 40 Hz in Bell modes.
2.2.5
Ring Detection
A ring signal can be detected from a TTL-compatible 15.3 Hz to 68 Hz square wave
input.
2.2.6
Billing Protection
When the modem goes off-hook to answer an incoming call, both transmission and
reception of data are prevented for 2 seconds to allow transmission of the billing tone
signal.
2-2
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
2.2.7
Connection Speeds
The modem functions as a data modem when the +FCLASS=0 command is active.
Line connection can be selected using the +MS command. The +MS command selects
modulation, enables/disables automode, and selects minimum and maximum line speeds
(Table 2-1).
Table 2-1. +MS Command Automode Connectivity
Modulation
<carrier>
Bell 103
Bell 212
V.21
V.22
V.22bis
V.23
V.32
V.32bis
1
V.34/V.90 upstream
B103
B212
V21
V22
V22B
V23C
V32
V32B
V34/V90
V.90 downstream
2
V90
V.92 downstream
2
V92
V.92 upstream
2
V92
Possible (<min_rx_rate>, <min_rx_rate>,
(<min_tx_rate>), and <max_tx_rate>) Rates (bps)
300
1200 Rx/75 Tx or 75 Rx/1200 Tx
300
1200
2400 or 1200
1200
9600 or 4800
14400, 12000, 9600, 7200, or 4800
33600, 31200, 28800, 26400, 24000, 21600, 19200, 16800,
14400, 12000, 9600, 7200, 4800, or 2400
56000, 54667, 53333, 52000, 50667, 49333, 48000, 46667,
45333, 44000, 42667, 41333, 40000, 38667, 37333, 36000,
34667, 33333, 32000, 30667, 29333, 28000
56000, 54667, 53333, 52000, 50667, 49333, 48000, 46667,
45333, 44000, 42667, 41333, 40000, 38667, 37333, 36000,
34667, 33333, 32000, 30667, 29333, 28000
48000, 46667, 45333, 44000, 42667, 41333, 40000, 38667,
37333, 36000, 34667, 33333, 32000, 30667, 29333, 28000,
26667, 25333, 24000
Notes:
1. V.92 and V.34 models.
2. V.92 models
2.2.8
Automode
Automode detection can be enabled by the +MS command to allow the modem to
connect to a remote modem in accordance with draft PN-3320 for V.34 (Table 2-1).
2.3
Data Mode
Data mode exists when a telephone line connection has been established between
modems and all handshaking has been completed.
2.3.1
Speed Buffering (Normal Mode)
Speed buffering allows a DTE to send data to, and receive data from, a modem at a speed
different than the line speed. The modem supports speed buffering at all line speeds.
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Conexant Proprietary and Confidential Information
2-3
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
2.3.2
Flow Control
DTE-to-Modem Flow Control. If the modem-to-line speed is less than the DTE-tomodem speed, the modem supports XOFF/XON or RTS/CTS flow control with the DTE
to ensure data integrity.
2.3.3
Escape Sequence Detection
The +++ escape sequence can be used to return control to the command mode from the
data mode. Escape sequence detection is disabled by an S2 Register value greater than
127.
2.3.4
BREAK Detection
The modem can detect a BREAK signal from either the DTE or the remote modem. The
\Kn command determines the modem response to a received BREAK signal.
2.3.5
Telephone Line Monitoring
GSTN Cleardown (V.92, V.90, V.34, V.32bis, V.32). Upon receiving GSTN Cleardown
from the remote modem in a non-error correcting mode, the modem cleanly terminates
the call.
Loss of Carrier (V.22bis and Below). If carrier is lost for a time greater than specified
by the S10 register, the modem disconnects.
2.3.6
Fall Forward/Fallback (V.92/V.90/V.34/V.32bis/V.32)
During initial handshake, the modem will fallback to the optimal line connection within
V.92/V.90/V.34/V.32bis/V.32 mode depending upon signal quality if automode is
enabled by the +MS or N1 command.
When connected in V.92/V.90/V.34/V.32bis/V.32 mode, the modem will fall forward or
fallback to the optimal line speed within the current modulation depending upon signal
quality if fall forward/fallback is enabled by the %E2 command.
2.3.7
Retrain
The modem may lose synchronization with the received line signal under poor or
changing line conditions. If this occurs, retraining may be initiated to attempt recovery
depending on the type of connection.
The modem initiates a retrain if line quality becomes unacceptable if enabled by the %E
command. The modem continues to retrain until an acceptable connection is achieved, or
until 30 seconds elapse resulting in line disconnect.
2.3.8
Programmable Inactivity Timer
The modem disconnects from the line if data is not sent or received for a specified length
of time. In normal or error-correction mode, this inactivity timer is reset when data is
received from either the DTE or from the line. This timer can be set to a value between 0
and 255 seconds by using register S30. A value of 0 disables the inactivity timer.
2-4
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
2.3.9
DTE Signal Monitoring (Serial DTE Interface Only)
DTR#. When DTR# is asserted, the modem responds in accordance with the &Dn and
&Qn commands.
RTS#. RTS# is used for flow control if enabled by the &K command in normal or errorcorrection mode.
2.3.10
Call Progress Speaker Interface
A digital speaker output (DSPKOUT) is supported. DSPKOUT is a square wave output
in Data mode used for call progress or carrier monitoring. This output can be optionally
connected to a low-cost on-board speaker, e.g., a sounducer, or to an analog speaker
circuit.
2.3.11
Serial EEPROM Interface
The 20-pin QFN supports a 2-line serial interface to an optional serial EEPROM.
The EEPROM can hold information such as firmware customization, and country code
parameters. Data stored in EEPROM takes precedence over the factory default settings.
A serial EEPROM is required only if additional storage is required for more country
profiles or customized firmware code.
The EEPROM size can range from 2 Kb (256 x 8) to 256 Kb (32K x 8). A 2 Kb
EEPROM must be 100 kHz or 400 kHz; higher capacity EEPROMs must be 400 kHz.
2.4
V.92 Features (V.92 Model)
Modem-on-Hold, quick connect, and PCM upstream are only available when connecting
in V.92 data mode. V.92 features are only available when the server called is a V.92
server that supports that particular feature.
2.4.1
Modem-on-Hold
The Modem-on-Hold (MOH) function enables the modem to place an Internet data
connection on hold while using the same line to accept an incoming or place an outgoing
voice call. This feature is available only with a connection to a server supporting MOH.
MOH can be executed through either of two methods:
•
•
102635F
One method is to enable MOH through the +PMH command. With Call Waiting
Detection (+PCW command) enabled, an incoming call can be detected while online. Using a string of commands, the modem negotiates with the server to place the
data connection on hold while the line is released so that it can be used to conduct a
voice call. Once the voice call is completed, the modem can quickly renegotiate with
the server back to the original data call.
An alternative method is to use communications software that makes use of the
Conexant Modem-on-Hold drivers. Using this method, the software can detect an
incoming call, place the data connection on hold, and switch back to a data
connection.
Conexant Proprietary and Confidential Information
2-5
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
2.4.2
Quick Connect
The quick connect function enables the modem to shorten the connect time of subsequent
calls to a server supporting quick connect. The quick connect feature is supported by the
+PQC command.
2.4.3
PCM Upstream
PCM upstream boosts the upstream data rates between the user and ISP to reduce upload
times for large files and email attachments. A maximum of 48 kbps upstream rate is
supported with PCM upstream enabled, in contrast to a maximum of 32.2 kbps upstream
rate with PCM upstream not enabled. PCM upstream is supported by the +PCM
command. PCM upstream is disabled by default.
2.5
Error Correction and Data Compression
2.5.1
V.42 Error Correction
V.42 supports two methods of error correction: LAPM and, as a fallback, MNP 4. The
modem provides a detection and negotiation technique for determining and establishing
the best method of error correction between two modems.
2.5.2
MNP 2-4 Error Correction
MNP 2-4 is a data link protocol that uses error correction algorithms to ensure data
integrity. Supporting stream mode, the modem sends data frames in varying lengths
depending on the amount of time between characters coming from the DTE.
2.5.3
V.44 Data Compression
V.44 data compression encodes pages and files associated with Web pages more
efficiently than V.42bis. These files include WEB pages, graphics and image files, and
document files. V.44 can provide an effective data throughput rate up to DTE rate for a
56-kbps connection. The improved performance amount varies both with the actual
format and with the content of individual pages and files.
2.5.4
V.42bis Data Compression
V.42bis data compression mode, enabled by the %Cn command or S46 register, operates
when a LAPM connection is established.
The V.42bis data compression employs a “string learning” algorithm in which a string of
characters from the DTE is encoded as a fixed length codeword and stored in a
dictionary. The dictionary is dynamically updated during normal operation.
2-6
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
2.5.5
MNP 5 Data Compression
MNP 5 data compression mode, enabled by the %Cn command, operates during an MNP
connection.
In MNP 5, the modem increases its throughput by compressing data into tokens before
transmitting it to the remote modem, and by decompressing encoded received data before
sending it to the DTE.
2.6
Voice/Audio Mode
Voice and audio functions are supported by the Voice Mode. Voice Mode includes four
submodes: Online Voice Command Mode, Voice Receive Mode, Voice Transmit Mode
and Full-Duplex Receive and Transmit Mode.
2.6.1
Online Voice Command Mode
This mode results from the connection to the telephone line or a voice/audio I/O device
(e.g., microphone, speaker, or handset) through the use of the +FCLASS=8 and +VLS
commands. After mode entry, AT commands can be entered without aborting the
connection.
2.6.2
Voice Receive Mode
This mode is entered when the +VRX command is active in order to record voice or
audio data input at the RIN pin, typically from a microphone/handset or the telephone
line.
Received analog voice samples are converted to digital form and compressed for reading
by the host. AT commands control the codec bits-per-sample rate.
Received analog mono audio samples are converted to digital form and formatted into
8-bit unsigned linear PCM format for reading by the host. AT commands control the bit
length and sampling rate. Concurrent DTMF/tone detection is available at the 8 kHz
sample rate.
2.6.3
Voice Transmit Mode
This mode is entered when the +VTX command is active in order to playback voice or
audio data to the TXA output, typically to a speaker/handset or to the telephone line.
Digitized voice data is decompressed and converted to analog form at the original
compression quantization sample-per-bits rate then output to the TXA output.
Digitized audio data is converted to analog form then output to the TXA output.
2.6.4
Full-Duplex Receive and Transmit Mode
This mode is entered when the +VTR command is active in order to concurrently receive
and transmit voice.
102635F
Conexant Proprietary and Confidential Information
2-7
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
2.6.5
Audio Mode
The audio mode enables the host to transmit and receive 8-bit audio signals. In this mode,
the modem directly accesses the internal analog-to-digital (A/D) converter (ADC) and the
digital-to-analog (D/A) converter (DAC). Incoming analog audio signals can then be
converted to digital format and digital signals can be converted to analog audio output.
2.6.6
Tone Detectors
The tone detector signal path is separate from the main received signal path thus enabling
tone detection to be independent of the configuration status. In Tone Mode, all three tone
detectors are operational.
2.7
V.80 Synchronous Access Mode (SAM)
V.80 Synchronous Access Mode between the modem and the host/DTE is provided for
host-controlled communication protocols, e.g., H.324 video conferencing applications.
Voice-call-first (VCF) before switching to a videophone call is also supported.
2.8
Telephony Extensions
The following telephony extension features are supported and are typically implemented
in designs for set-top box applications to enhance end-user experience:
•
•
•
Line-in-use detection
Extension pick-up detection
Remote hang-up detection
The telephony extension features are enabled through the -STE command. The -TTE
command can be used to adjust the voltage thresholds for the telephony extension
features.
2.8.1
Line-in-Use Detection
The line-in-use detection feature can stop the modem from disturbing the phone line
when the line is already being used. When an attempt is made to dial using ATDT and the
phone line is in use, the modem will not go off hook and will respond with the message
“LINE IN USE”.
2.8.2
Extension Pick-up Detection
The extension pick-up detection feature (also commonly referred as PPD or Parallel
phone detection) allows the modem to detect when another telephony device (i.e., fax
machine, phone, satellite/cable box) is attempting to use the phone line. When an
extension pick-up has been detected, the modem will go on-hook and respond with the
message “OFF-HOOK INTRUSION”.
This feature can be used to quickly drop a modem connection in the event when a user
picks up an extension phone line. For example, this feature allows set top boxes with an
integrated CSMxx modem to give normal voice users the highest priority over the
telephone line.
2-8
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
2.8.3
Remote Hang-up Detection
The remote hang-up detection feature will cause the modem to go back on-hook and
respond with the message “LINE REVERSAL DETECTED” during a data connection
when the remote modem is disconnected for abnormal termination reasons (remote phone
line unplugged, remote server/modem shutdown).
2.9
Point-of-Sales Support
Point-of-Sales (POS) terminals usually need to exchange a small amount of data in the
shortest amount of time. Low speed modulations such as Bell212A or V.22 are still
mainly used in POS applications. Additionally, new non-standard sequences have been
developed to better support POS applications.
Industry standard and shortened answer tone B103 and V.21 are supported, as well as
FastPOS (V.29) and V.22 FastConnect. POS terminal modulations are supported by the
$F command.
2.10
Fax Class 1 and Fax Class 1.0 Operation
Facsimile functions operate in response to fax class 1 commands when +FCLASS=1 or to
fax class 1.0 commands when +FCLASS=1.0.
In the fax mode, the on-line behavior of the modem is different from the data (non-fax)
mode. After dialing, modem operation is controlled by fax commands. Some AT
commands are still valid but may operate differently than in data modem mode.
Calling tone is generated in accordance with T.30.
2.11
Tone Detectors
The modem is equipped with three tone detectors with separate signal paths from the
main received signal path thus enabling tone detection to be independent of the
configuration status.
2.12
Call Waiting Tone Detection
Call Waiting tones can be detected when in V.92, V.90, V.34, and V.32bis data modes.
2.13
Caller ID
Both Type I Caller ID (On-Hook Caller ID) and Type II Caller ID (Call Waiting Caller
ID) are supported for U.S. and many other countries (see Section 2.14). Both types of
Caller ID are enabled/disabled using the +VCID command. Call Waiting Tone detection
must be enabled using the +PCW command to detect and decode Call Waiting Caller ID.
When enabled, caller ID information (date, time, caller code, and name) can be passed to
the DTE in formatted or unformatted form. Inquiry support allows the current caller ID
mode and mode capabilities of the modem to be retrieved from the modem.
Type II Caller ID (Call Waiting Caller ID) detection operates only during data mode in
V.92, V.90, V.34, V.32bis, or V.32.
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CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
2.14
Worldwide Country Support
Internal modem firmware supports 63 country profiles (see Table 1-2). These country
profiles include the following country-dependent parameters:
•
•
•
•
•
•
•
•
•
•
•
Dial tone detection levels and frequency ranges.
DTMF dialing parameters: Transmit output level, DTMF signal duration, and DTMF
interdigit interval.
Pulse dialing parameters: Make/break times, set/clear times, and dial codes are
programmable.
Ring detection frequency range.
Type I and Type II Caller ID detection are supported for many countries. Contact
your local Conexant sales office for additional country support.
Blind dialing enabled/disable.
Carrier transmit level. The maximum, minimum, and default values can be defined to
match specific country and DAA requirements.
Calling tone is generated in accordance with V.25. Calling tone may be toggled
(enabled/disabled) by inclusion of a “^” character in a dial string. It may also be
disabled.
Frequency and cadence of tones for busy, ringback, congested, warble, dial tone 1,
and dial tone 2.
Answer tone detection period.
Blacklist parameters. The modem can operate in accordance with requirements of
individual countries to prevent misuse of the network by limiting repeated calls to
the same number when previous call attempts have failed. Call failure can be
detected for reasons such as no dial tone, number busy, no answer, no ringback
detected, voice (rather than modem) detected, and key abort (dial attempt aborted by
user). Actions resulting from such failures can include specification of minimum
inter-call delay, extended delay between calls, and maximum numbers of retries
before the number is permanently forbidden ("blacklisted").
The country profiles may be altered or customized by modifying the country-dependent
parameters. Additional profiles may also be included. Additional and modified country
profiles are supported by internal SRAM.
Please contact an FAE at the local Conexant sales office for additional and modified
country profile support.
2.15
Diagnostics
Diagnostics are performed in response to test commands.
Analog Loopback (&T1 Command). Data from the local DTE is sent to the modem,
which loops the data back to the local DTE.
Analog Loopback (&T1 Command). Data from the local DTE is sent to the modem,
which loops the data back to the local DTE.
2-10
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CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
2.16
Low Power Modes
The modem enters a low power mode when no line connection exists and no host activity
occurs for the period of time specified in the S24 register. The modem supports four low
power modes: Idle Mode, Sleep Mode, Deep Sleep Mode, and Stop Mode. The low
power mode entered depends on the setting of the –SLP command.
2.16.1
Idle Mode
In Idle mode, the CPU and SPX clocks stop, and the SSD clock runs at low frequency.
The modem can detect and qualify ring signals and process AT commands. The modem
returns to normal mode upon receiving an AT command or receiving a qualified ring.
2.16.2
Sleep Mode
In Sleep mode, the SPX clock stops, and the CPU and SSD clocks run at low frequency.
The modem can detect and qualify ring signals. The modem cannot process AT
commands. The modem can be awakened by the host sending a single (any) character
(typically followed by an AT command) or by the modem receiving a qualified ring.
2.16.3
Deep Sleep Mode
In Deep Sleep mode, the SPX and SSD clocks stop, and the CPU clock runs at low
frequency. The modem can detect and qualify ring signals. The modem cannot process
AT commands. The modem can be awakened by the host sending a single (any) character
(typically followed by an AT command) or by the modem receiving a qualified ring.
2.16.4
Stop Mode
In Stop mode, the CPU, SPX and SSD clocks stop. The modem cannot process AT
commands and cannot detect and qualify ring signals. The modem can be awakened by
the host sending a single (any) character (typically followed by an AT command).
102635F
Conexant Proprietary and Confidential Information
2-11
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
This page is intentionally blank..
2-12
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
3.
Hardware Interface
3.1
CX93011 Modem Hardware Interface Signals
3.1.1
CX93011 Modem Interface Signal Summary
3.1.1.1
LSD Interface (Through DIB)
The DIB interface signals are:
•
•
3.1.1.2
DIBP
DIBN
Call Progress Speaker Interface
The call progress speaker interface signal is:
•
3.1.1.3
Digital speaker output (DSPKOUT); output
Clock Select Interface
The clock select interface signal is:
•
3.1.1.4
Clock Select (CLKSEL); input
Serial EEPROM Interface
The 2-line serial interface signals to an optional serial EEPROM are:
•
•
3.1.1.5
Bidirectional Data input/output (NVMDATA)
Clock output (NVMCLK)
Serial DTE Interface and Indicator Outputs
The supported DTE interface signals are:
•
•
•
•
•
•
•
•
102635F
Serial Transmit Data input (TXD#)
Serial Receive Data output line (RXD#)
Clear to Send output (CTS#)
Received Line Signal Detector output (RLSD#)
Ring Indicator output (RI#)
Data Terminal Ready control input (DTR#)
Request to Send control input (RTS#)
Data Set Ready output (DSR#)
Conexant Proprietary and Confidential Information
3-1
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
3.1.2
CX93011 Modem Pin Assignments and Signal Definitions
CX93011 Modem hardware interface signals are shown by major interface in Figure 3-1,
are shown by pin number in Figure 3-2, and are listed by pin number in Table 3-1.
CX93011 Modem hardware interface signals are defined in Table 3-2.
Figure 3-1. CX93011 Modem Hardware Interface Signals
18
19
28.224 OR 27.000 MHZ
CRYSTAL OR CLOCK OSCILLATOR
2
1
6
8
9
7
5
SERIAL HOST
INTERFACE
XTLI
XTLO
TXD#
RXD#
CTS#
RLSD#
RI#
DTR#
RTS#
FREQUENCY SELECT CIRCUIT
DSPKOUT
CX93011
Modem
20-Pin QFN
4
12
SERAIL EEPROM
20
RESET CIRCUIT
240K
+3.3V
DIBN
DIBP
14
NVMCLK/CLKSEL
NVMDATA
VDD_CORE
VDD
VDD
GND
PADDLE (GND)
10
11
17
DIGITAL ISOLATION
BARRIER (DIB)
SPEAKER CIRCUIT
15
3
13
+1.2V DECOUPLING
+3.3V
16
21
RESET#
LPO
NOTE:
PADDLE (GND), indicated as Pin 21, is a conductive surface on the bottom of the device and must be
connected to system side digital ground.
102635_003
3-2
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
RESET#
XTLO
XTLI
DSPKOUT
GND
20
19
18
17
16
Figure 3-2. CX93011 Modem 20-Pin QFN Pin Signals
RXD#
1
15
VDD_CORE
TXD#
2
14
LPO
VDD
3
13
VDD
NVMCLK/CLKSEL
4
12
NVMDATA
RTS#
5
11
DIBP
6
7
8
9
10
CTS#
DTR#
RLSD#
RI#
DIBN
CX93011
NOTE:
PADDLE (GND) is a conductive surface on the bottom of the
device and is indicated as pin 21.
102635_004
Table 3-1. CX93011 Modem 20-Pin QFN Pin Signals
Pin No.
1
2
3
4
5
6
7
8
9
10
Signal Name
RXD#
TXD#
VDD
NVMCLK/CLKSEL
RTS#
CTS#
DTR#
RLSD#
RI#
DIBN
Pin No.
11
12
13
14
15
16
17
18
19
20
21
Signal Name
DIBP
NVMDATA
VDD
LPO
VDD_CORE
GND
DSPKOUT
XTLI
XTLO
RESET#
PADDLE (GND)
Note:
PADDLE (GND) is a conductive surface on the bottom of the device and is indicated as pin 21.
102635F
Conexant Proprietary and Confidential Information
3-3
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
Table 3-2. CX93011 Modem Hardware Signal Definitions
Label
Pin
I/O
I/O
Type
Signal Name/Description
System
XTLI
XTLO
18
19
I
O
Ix
Ox
Crystal In and Crystal Out. If an external 27 or 28.224 MHz crystal
circuit is used instead of an external clock circuit, connect XTLI and
XTLO to the external crystal circuit. When an external clock circuit is
used, connect the clock signal to XTLI and leave XTLO open. (See
CLKSEL pin description.)
NVMCLK/CLKSEL
4
I
Ipu/O2
Clock Frequency Select (CLKSEL). Clock frequency is selected by
CLKSEL during reset processing. Leave open for 28.224 MHz operation;
connect pin to digital ground (GND) through 10 kΩ for 27.000 MHz
operation.
RESET#
20
I
Ipu/O2
This signal is multiplexed with NVMCLK.
Reset. The active low RESET# input resets the modem logic and clears
the internal SRAM.
RESET# low holds the modem in the reset state; RESET# going high
releases the modem from the reset state. After application of VDD,
RESET# must be held low for at least 15 ms after the VDD power
reaches operating range. The modem device set is ready to use 25 ms
after the low-to-high transition of RESET#.
VDD_CORE
15
O
PWR
+1.2V Internal Core Voltage Filter. Internal +1.2 V core voltage for
decoupling. Do not connect this pin to an external +1.2 V power supply.
VDD
3, 13
O
PWR
Digital and I/O Circuits Supply Voltage. Connect this pin to an external
+3.3 V power supply.
GND
16
I
GND
Digital Ground. Connect to digital ground (GND).
PADDLE (GND)
21
G
GND
Paddle Ground. Connect to digital ground (GND).
LPO
14
I
DSPKOUT
17
O
Ipd/O2
Modem Speaker Digital Output. The DSPKOUT digital output reflects
the received analog input signal digitized to TTL high or low level by an
internal comparator.
DIB Interface
DIBN
10
O
Odpc
DIB Negative. Provides clock and power to the LSD, and transfers data,
control and status information between the SSD and LSD. Connect to
DIB transformer primary winding terminal.
DIBP
11
O
Odpc
NVMCLK/CLKSEL
4
I/O
Ipu/O2
NVMDATA
12
I/O
Ipu/O2
Low Power Oscillator. Connect to +3.3V through 240 KΩ.
Speaker Interface
DIB Positive. Provides clock and power to the LSD and transfers data,
control and status information between the SSD and LSD. Connect to
DIB transformer primary winding terminal.
NVRAM Interface
NVRAM Clock (NVMCLK). During normal operation, NVMCLK/CLKSEL
output high enables the EEPROM. Connect to EEPROM SCL pin.
This signal is multiplexed with CLKSEL.
3-4
NVRAM Data. The NVMDATA pin supplies a serial data interface to the
EEPROM. Connect to EEPROM SDA pin and to +3.3V through 10 KΩ.
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
Table 3-2. CX93011 Modem Hardware Signal Definitions (Continued)
Label
Pin
I/O
I/O
Signal Name/Description
Type
V.24 (EIA/TIA-232-E) DTE Serial Interface
TXD#
2
I
Ipu/O2
Transmitted Data (EIA BA/ITU-T CT103). The DTE uses the TXD# line
to send data to the modem for transmission over the telephone line or to
transmit commands to the modem.
RXD#
1
O
Ipu/O2
Received Data (EIA BB/ITU-T CT104). The modem uses the RXD# line
to send data received from the telephone line to the DTE and to send
modem responses to the DTE. During command mode, RXD# data
represents the modem responses to the DTE.
CTS#
6
O
Ipu/O2
Clear To Send (EIA CB/ITU-T CT106). CTS# output ON (low) indicates
that the modem is ready to accept data from the DTE. In error correction
or normal mode, CTS# is always ON (low) unless RTS/CTS flow control
is selected by the &Kn command.
RLSD#
8
O
Ipu/O2
Received Line Signal Detector (EIA CF/ITU-T CT109). During normal
operation, when AT&C0 command is not in effect, RLSD# output is ON
when a carrier is detected on the telephone line or OFF when carrier is
not detected.
RI#
9
O
Ipu/O2
Ring Indicator (EIA CE/ITU-T CT125). RI# output ON (low) indicates the
presence of an ON segment of a ring signal on the telephone line.
DTR#
7
I
Ipu/O2
Data Terminal Ready (EIA CD/ITU-T CT108). The DTR# input is turned
ON (low) by the DTE when the DTE is ready to transmit or receive data.
DTR# ON prepares the modem to be connected to the telephone line,
and maintains the connection established by the DTE (manual
answering) or internally (automatic answering). DTR# OFF places the
modem in the disconnect state under control of the &Dn and &Qn
commands.
RTS#
5
I
Ipu/O2
Request To Send (EIA CA/ITU-T CT105). RTS# input ON (low)
indicates that the DTE is ready to send data to the modem. In the
command state, the modem ignores RTS#.
The modem ignores RTS# unless RTS/CTS flow control is selected by
the &Kn command.
Note:
I/O Types: See Table 3-3.
102635F
Conexant Proprietary and Confidential Information
3-5
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
3.1.3
CX93011 Modem Electrical Characteristics
CX93011 I/O types are defined in Table 3-3.
CX93011 DC electrical characteristics are listed in Table 3-4.
Table 3-3. CX93011 Modem I/O Type Definitions
I/O Type
Idd/Odd
Ix/Ox
Ipd/O2
Digital input/output, DIB data transceiver
I/O, wire
Ipu/O2
Digital input, 120 kΩ pull-up / Digital output, 2 mA
Ippu/O2
Digital input, Programmable 120 kΩ pull-up / Digital output, 2 mA
Digital output with adjustable drive, DIB clock and power
Odpc
Rx
Description
Digital input, 120 kΩ pull-down / Digital output, 2 mA
Oscillator Pad, place 120 kΩ resistor from pad to VDD
PWR
Power
GND
Ground
NOTES:
1. See DC characteristics in Table 3-4.
2. I/O Type corresponds to the device Pad Type. The I/O column in signal interface tables refers to signal I/O direction used in
the application.
Table 3-4. CX93011 Modem DC Electrical Characteristics
Parameter
Symbol
Min.
Max.
Units
Test Conditions
Input Voltage Low
Input Voltage High
Input Current (no Pull-Down
or Pull-Up)
Input Current (Pull-Down)
Input Current (Pull-Up)
Output Voltage Low
Output Voltage High
Output Impedance
VIL
VIH
IIL
0
0.7 * VDD
-1
0.3 *VDD
VDD
+1
V
V
uA
OEN = 1
IPD
IPU
VOL
VOH
Z
+6
-300
0
VDD-0.4
25
+30
-60
0.4
VDD
95
uA
uA
V
V
VIN = VDD
VIN = GND
IOL = +2 mA
IOL = -2 mA
Pull-Up Resistance
Rpu
120
500
kΩ
Pull-Down Resistance
Rpd
120
500
Ω
VIN = GND
VIN = VDD
kΩ
Test Conditions unless otherwise stated: VDD = +3.3V ± 5%; TA = -10°C to 70°C; external load = 50 pF.
3-6
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
3.2
CX20548 LSD Hardware Pins and Signals
3.2.1
General
3.2.1.1
Host Side Device (HSD) Interface (Through DIB)
The DIB interface signals are:
•
•
3.2.1.2
DIB Positive (DIBP, pin 14); input/output
DIB Negative (DIBN, pin 16); input/output
Power and Ground
The power and ground signals are:
•
•
•
•
3.2.1.3
Unregulated Power Output (PWR, pin 15)
Regulated Digital Power Output (DVDD, pin 1)
Regulated Analog Power Output (AVDD, pin 2)
Analog Ground (PADDLE [AGND]); Analog ground
Telephone Line Interface
The telephone line interface signals are:
•
•
•
•
•
•
•
•
3.2.1.4
RING AC Coupled (RAC, pin 4); input
TIP AC Coupled (TAC, pin 5); input
Electronic Inductor Capacitor (EIC, pin 11)
Electronic Inductor Output (EIO, pin 10)
Electronic Inductor Feedback (EIF, pin 9)
Receive Analog Input (RXI, pin 6); input
Transmit Output (TXO, pin 8); output
Transmit Feedback (TXF, pin 7); input
Voltage References
There is on reference voltage pin:
•
3.2.1.5
Output Middle (Center) Reference Voltage (VC, pin 3); output for decoupling
General Purpose Input/Output
There is one unassigned general purpose input/output pin:
•
102635F
General Purpose Input/Output (GPIO, pin 13); input/output
Conexant Proprietary and Confidential Information
3-7
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
3.2.2
Pin Assignments and Signal Definitions
CX20548 LSD hardware interface signals are shown by major interface in Figure 3-3, are
shown by pin number in Figure 3-4, and are listed by pin number in Table 3-5.
Note:
Pin 17 is shown in Figure 3-3 to ensure that the PADDLE is considered when
laying out the printed circuit board. The PADDLE is the analog ground pin of
the CX20548 device and must be connected to LSD analog ground
(AGND_LSD) when the CX20548 is populated in a PCB.
CX20548 LSD hardware interface signals are defined in Table 3-6.
CX20548 LSD GPIO DC characteristics are specified in Table 3-7.
CX20548 LSD AVDD DC characteristics are specified in Table 3-8.
Figure 3-3. CX20548 LSD Hardware Interface Signals
C850
DIGITAL
ISOLATION
BARRIER
(DIB)
RAC
16
DIBN
TAC
R802
4
R804
5
DIBN
C862
14
DIBP
EIC
EIO
EIF
DIBP
T802
C852
R854
2
TEST
AGND_LSD
1
DVDD
C830
AGND_LSD
15
2
C870
Electronic
Inductor, OffHook, Pulse
Dial, and TIP
and RING VI
Control
11
10
9
CX20548
SmartDAA 4
Line Side
Device
(LSD)
16-Pin QFN
RXI
Safety
and EMI
Protection
Telephone
Line
Connector
TIP
RING
Receive
Coupling
6
AGND_LSD
TXO
TXF
Impedance
Matching
and
Transmitter
8
7
PWR+
AVDD
VC
C828
3
C844
AGND_LSD
AGND_LSD
17
GPIO
13
NC
PADDLE (AGND)
AGND_LSD
NOTES:
1. Consult applicable reference design for exact component
placement and values, and for layout guidelines.
2. The PADDLE (indicated as Pin 17) is the analog ground pin of the
CX20548 device and must be connected to LSD analog ground (AGND_LSD)
when the CX20548 is populated in a printed circuit board (PCB).
102596_007
3-8
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
DIBN
PWR
DIBP
GPIO
16
15
14
13
Figure 3-4. CX20548 LSD 16-Pin QFN Pin Signals
DVDD
1
12
TEST
AVDD
2
11
EIC
VC
3
10
EIO
RAC
4
9
EIF
5
6
7
8
TAC
RXI
TXF
TXO
CX20548
The PADDLE, a connective surface located on the
bottom of the package and referred to as pin 17, is
connected internally to analog ground (AGND).
102596_008
Table 3-5. CX20548 LSD 16-Pin QFN Pin Signals
Pin
1
2
102635F
Signal Label
DVDD
AVDD
Pin
9
10
Signal Label
EIF
EIO
3
VC
11
EIC
4
RAC
12
TEST
5
TAC
13
GPIO
6
RXI
14
DIBP
7
8
TXF
TXO
15
16
PWR
DIBN
17
PADDLE (AGND)
Conexant Proprietary and Confidential Information
3-9
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
Table 3-6. CX20548 LSD Hardware Signal Definitions
Label
Pin
I/O
I/O Type
Signal Name/Description
System Interface Signals
PWR
Unregulated Power Output. Unregulated power output from the internal
rectifier, connect to AGND_LSD through C870.
REF
Output Middle Reference Voltage. Connect to AGND_LSD through
C844, which must be placed close to pin 3. Use a short path and a wide
trace to AGND_LSD pin.
PWR
Analog Power Output. Provides external connection point for
decoupling. (AVDD is routed internally to LSD analog circuits.). Connect
to AGND_LSD through C828. C828 must be placed close to pins 2.
PWR
Digital Power Output. Provides external connection point for
decoupling. Connect to AGND_LSD through C830. Place C830 near
pin 1.
AGND_LSD
Paddle Analog Ground. The conductive surface located on the bottom
of the package and referred to as pin 17 is connected internally to device
analog ground. Connect to AGND_LSD.
PWR
15
PWR
VC
3
REF
AVDD
2
PWR
DVDD
1
PWR
PADDLE
(AGND)
17
AGND_LSD
DIBP
14
I/O
I/O
DIB Positive. Positive terminal of DIB, connect to secondary of DIB
transformer.
DIBN
16
I/O
I/O
DIB Negative. Negative terminal of DIB, connect to secondary of DIB
transformer.
RAC
TAC
4
5
I
I
EIC
11
O
EIO
10
O
EIF
9
I
RXI
6
I
TXO
8
O
TXF
7
I
DIB Interface Signals
TIP and RING Interface Signals
RING AC Coupled and TIP AC Coupled. Un-rectified voltage from
telephone line used to detect ring.
Connect RAC to the diode bridge AC node (RING) through R802
(connects to pin 4).
Connect TAC to the diode bridge AC node (TIP) through R804 (connects
to pin 5).
Oa
Electronic Inductor Capacitor. Electronic inductor filtering capacitor.
Connect to AGND_LSD through C858.
Oa
Electronic Inductor Output. Calculated voltage is applied to this output
to control off-hook and DC VI mask operation. Connect to base of Q804
through R836.
Ia
Electronic Inductor Feedback. Connect to emitters of Q806 and Q808
through R830 and R834, respectively.
Ia
Receive Analog Input. Receiver operational amplifier inverting input.
AC coupled to the Bridge_CC node through R810 (connects to pin 6)
and C810 in series. R810 and C810 must be placed very close to pin 6.
The length of the PCB trace connecting R810 to the RXI pin must be
kept at an absolute minimum.
Oa
Transmit Output. Outputs transmit signal and impedance matching
signal; connect to base of transistor Q802.
Ia
Transmit Feedback. Connect to emitter of transistor Q802.
Ia
a
Not Used
GPIO
1
I/O
It/Ot12
General Purpose I/O. Leave open if not used.
Notes:
1. I/O types*:
Ia
Analog input
It
Digital input*
Oa
Analog output
Ot12
Digital output*
AGND_LSD Isolated LSD Analog Ground (isolated from the host system ground)
*See Section CX20548 LSD GPIO DC Electrical Characteristics (Table 3-7).
2. Refer to applicable reference design for exact component placement and values.
3-10
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
Table 3-7. CX20548 LSD GPIO DC Electrical Characteristics
Parameter
Symbol
Min.
Input Voltage
VIN
Input Voltage Low
VIL
Input Voltage High
Output Voltage Low
Output Voltage High
Typ.
Max.
Units
-0.30
–
3.465
V
–
–
1.0
V
VIH
1.6
–
–
V
VOL
VOH
0
–
0.33
V
2.97
–
–
V
Test Conditions
DVDD = +3.465V
Input Leakage Current
–
-10
–
10
µA
Output Leakage Current (High Impedance)
–
-10
–
10
µA
GPIO Output Sink Current at 0.33 V maximum
–
2.4
–
mA
GPIO Output Source Current at 2.97 V
–
2.4
–
mA
minimum
GPIO Rise Time/Fall Time
20
100
ns
Test Conditions unless otherwise stated: DVDD = +3.3V +5%; TA = -10°C to 70°C; external load = 50 pF
Table 3-8. CX20548 LSD AVDD and DVDD DC Electrical Characteristics
PWR Input
+3.3 V < PWR < +4.5 V
AVDD Output
+3.3 V ± 5%
PWR must be at least 200mV higher than AVDD.
See PWR, AVDD, and DVDD descriptions in Table 3-6.
102635F
DVDD Output
+3.0 V ± 5%
Conexant Proprietary and Confidential Information
3-11
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
3.3
Operating Conditions, Absolute Maximum Ratings, and Power
Requirements
The CX93011 operating conditions are specified in Table 3-9.
The CX93011 absolute maximum ratings are listed in Table 3-10.
The CX93011 current and power requirements are listed in Table 3-11.
Table 3-9. CX93011 Modem Operating Conditions
Parameter
Symbol
Supply Voltage
VDD
Operating Ambient Temperature
TA
Note: Voltages referenced to ground (VSS).
Limits
+3.3 ± 5%
-10 to +70
Units
VDC
°C
Symbol
VDD
T
Limits
-0.5 to +4.0
-55 to +125
Units
VDC
°C
Relative humidity
HREL
Input Voltage
Voltage Applied to Outputs in High
Impedance (Off) State
DC Input Clamp Current
DC Output Clamp Current
Static Discharge Voltage (25°C)
Latch-up Current (25°C)
VIN
VHZ
Up to 90% non-condensing,
or a wet bulb temperature up
to 35 °C, whichever is less.
-0.3 to (VDD + 0.3)
-0.5 to +5.5
VDC
VDC
IIK
IOK
VESD
ITRIG
±20
±20
±2500
±400
mA
mA
VDC
mA
Table 3-10. Absolute Maximum Ratings
Parameter
VDD Supply Voltage
Storage Temperature Range
STG
Handling CMOS Devices
The device contains circuitry to protect the inputs against damage due to high static
voltages. However, it is advised that normal precautions be taken to avoid application of
any voltage higher than maximum rated voltage.
An unterminated input can acquire unpredictable voltages through coupling with stray
capacitance and internal cross talk. Both power dissipation and device noise immunity
degrades. Therefore, all inputs should be connected to an appropriate supply voltage.
Input signals should never exceed the voltage range from -0.3V to (VDD + 0.3) V. This
prevents forward biasing the input protection diodes and possibly entering a latch up
mode due to high current transients.
3-12
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
Table 3-11. CX93011 Current and Power Requirements
Mode
Typical
Current
(Ityp)
(mA)
82
96
18
18
7.9
6.0
Maximum
Current
(Imax)
(mA)
84
99
18
18.6
7.9
6.0
Normal Mode: On-hook, Idle, waiting for ring
Normal Mode: Off-hook, normal data connection
Idle Mode
Sleep Mode
Deep Sleep Mode
Stop Mode
Notes:
1. Test conditions: VDD = +3.3V for typical values; VDD = +3.465V for maximum values.
2. Input Ripple ≤ 0.1 Vpeak-peak.
102635F
Typical
Power
(Ptyp)
(mW)
271
316
59
59.4
25.9
19.6
Conexant Proprietary and Confidential Information
Maximum
Power
(Pmax)
(mW)
290
342
64
64.4
27.4
20.7
3-13
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
3.4
Crystal and Clock Specifications
Crystal specifications are listed in Table 3-12. Clock specifications are listed in
Table 3-13.
Table 3-12. Crystal Specifications
Characteristic
Frequency
Calibration Tolerance
Frequency Stability vs. Temperature
Frequency Stability vs. Aging
Oscillation Mode
Calibration Mode
Load Capacitance, C
L
Shunt Capacitance, C
O
Series Resistance, R
1
Drive Level
Operating Temperature
Storage Temperature
Value
28.224 or 27.000 MHz nominal
±50 ppm at 25°C (C = 16.5 and 19.5 pF)
L
±35 ppm (-10°C to 70°C)
±20 ppm/5 years
Fundamental
Parallel resonant
18 pF nom.
7 pF max.
35-60 Ω max. @20 nW drive level
100 µW correlation; 500 µW max.
-10°C to 70°C
–40°C to 85°C
Table 3-13. Clock Specifications
Characteristic
Type
Frequency
Level
Duty Cycle
Stability
3-14
Value
Square wave
28.224 or 27.000 MHz nominal
3.3 Vp-p ± 0.3 V zero offset
50 ± 10 %
±50 ppm
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CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
4.
Package Dimensions
The 20-pin QFN package dimensions are shown in Figure 4-1.
The 16-pin QFN package dimensions are shown in Figure 4-2.
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Conexant Proprietary and Confidential Information
4-1
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
Figure 4-1. Package Dimensions for 20-Pin QFN
10
2X
0.10
C
0.10
A
0.05
4
C
b
A
D
A
C
13
0.10
M
C A B
0.05
M
C
A1
D/2
D2
A2
D1
0.10
C
D2/2
4X P
A3
2X
D1/2
20
20
B
SEE DETAIL "A"
FOR PIN #1 ID AND
TIE BAR MARK OPTION
PIN#1 ID
R0.20
4X P
5
1
6
1
0.45
0.60 DIA.
E1/2
E/2
2
2
3
E1
E
E2
3
3.2 REF.
E2/2
(MIN. 0.35)
0.10
L
C B
2X
0
B
0.10
C
C
A
C
3.2 REF.
SIDE VIEW
TOP VIEW
2X
(MIN. 0.35)
e
SEATING
PLANE
BOTTOM VIEW
C
C
L
4
e
b
A1
11
SCALE: NONE
TERMINAL TIP
TERMINAL/SIDE
SECTION "C-C"
S
Y
M
B
O
L
NOTES:
1. NOT APPLICABLE.
2. DIMENSIONING & TOLERANCES CONFORM TO ASME Y14.5M. - 1994.
3. N IS THE NUMBER OF TERMINALS.
Nd IS THE NUMBER OF TERMINALS IN X-DIRECTION.
Ne IS THE NUMBER OF TERMINALS IN Y-DIRECTION.
4. DIMENSION b APPLIES TO PLATED TERMINAL AND IS MEASURED
BETWEEN 0.20 AND 0.25mm FROM TERMINAL TIP.
5. THE PIN #1 IDENTIFIER (INDENTATION MARK OR OTHER FEATURE).
6. EXACT SHAPE AND SIZE OF THIS FEATURE IS OPTIONAL.
7. ALL DIMENSIONS ARE IN MILLIMETERS.
8. THE SHAPE SHOWN ON FOUR CORNERS ARE NOT ACTUAL I/O.
9. PACKAGE WARPAGE IS 0.05mm MAXIMUM.
10. APPLIED FOR EXPOSED PAD AND TERMINALS. EXCLUDE EMBEDDING
PART OF EXPOSED PAD FROM MEASURING.
11. APPLIED ONLY FOR TERMINALS.
A
A1
A2
A3
D
D1
E
E1
0
P
e
N
Nd
Ne
L
b
D2
E2
DIMENSIONS (mm)
N
O
MIN.
NOM.
MAX.
0.0 0
-
0.85
0.01
0.65
0.20 RE F.
6.00 BSC
5.75 BSC
6.00 BSC
5.75 BSC
0.90
0.05
0.70
0.24
0.42
0.50
0.28
3.95
3.95
0.80 BSC
20
5
5
0.60
0.75
0.33
0.40
4.10
4.25
4.10
4.25
T
E
11
12°
0.60
3
3
3
4
20-PIN 6x6mm QFN_(REF: 45278_PVA_EPVB)
POD_20QFN_6x6mm_PVA_EPVC (05-1499ill)
4-2
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
Figure 4-2. Package Dimensions for 16-Pin QFN
A
A1
D
A2
A3
D1
D2
16
16
Pin 1 •
Identifier
1
2
3
E1
Pin 1
Identifier
1
2
3
E
E2
L
b
e
SEATING
PLANE
TOP VIEW
SIDE VIEW
BOTTOM VIEW
Millimeters
Dim.
b
A1
NOTE 1
e
SECTION "C-C"
SCALE:NONE
TERMINALTIP
NOTES:
1. DIMENSION b APPLIES TO PLATED TERMINAL AND IS MEASURED
BETWEEN 0.20 AND 0.25mm FROM TERMINAL TIP.
Min.
Nom.
e
0.65 BSC
0.60
L
0.50
0.28
b
0.23
D2
1.95
2.10
1.95
2.10
E2
--A
0.85
A1
0.01
0.00
A2
--0.65
A3
0.20 REF
D
4.00 BSC
3.75 BSC
D1
E
4.00 BSC
E1
3.75 BSC
16-Pin QFN Ref. 45250
Max.
0.75
0.35
2.25
2.25
0.90
0.05
0.70
PD_QFN016
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Conexant Proprietary and Confidential Information
4-3
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
This page is intentionally blank.
4-4
Conexant Proprietary and Confidential Information
102635F
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
5.
Recommended QFN Surface Mount Land Patterns
The recommended surface mount land patterns based on the IPC-SM-782 standard for
board layout are shown in Figure 5-1 for the 20-pin QFN and Figure 5-2 for the 16-pin
QFN.
Figure 5-1. Recommended Surface Mount Land Pattern for 20-Pin QFN
102635F
Conexant Proprietary and Confidential Information
5-1
CX93011 CSMxx V.92/V.34/V.32bis Controllered Serial Modem Data Sheet
Figure 5-2. Recommended Surface Mount Land Pattern for 16-Pin QFN
5-2
Conexant Proprietary and Confidential Information
102635F
NOTES
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