Download VS1011, VS1002, VS1003 and VS1033

Using the
VS1011,
VS1002,
VS1003 and
VS1033
Media Codecs
VLSI Solution Oy Tampere Finland
VLSI Solution Oy Tampere Finland
Information here is non-authorative. Always check datasheet for details!
Using the VLSI Solution VS1011,
VS1002, VS1003 and VS1033
media codecs
- basic notes for the design engineer
Presentation held by
Panu-Kristian Poiksalo
Application engineer
[email protected]
VLSI Solution Oy Tampere Finland
Information here is non-authorative. Always check datasheet for details!
VDD, CLK, RST
●
Like any other digital circuit, the VS10xx codecs
require 3 basic thigs:
–
Power
–
Clock
–
Reset
VLSI Solution Oy Tampere Finland
Information here is non-authorative. Always check datasheet for details!
Power
●
●
●
Different Codecs have different power
requirements.
All codecs can be run from a single 2.6V
voltage, but might not be optimal solution
New processing technology allows separate,
lower voltage for CPU core
–
Lowers power consumption
VLSI Solution Oy Tampere Finland
Information here is non-authorative. Always check datasheet for details!
Volts
VDD Ranges
3.6
3.5
3.4
3.3
3.2
3.1
3
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
VDD MIN/MAX
1003
AVDD
(Analog)
1003
CVDD
(Core)
1003
IOVDD
(I/O)
1033
AVDD
(Analog)
1033
CVDD
(Core)
1033
IOVDD
(I/O)
VLSI Solution Oy Tampere Finland
Information here is non-authorative. Always check datasheet for details!
1011
AVDD
(Analog)
1011
DVDD
(Core+I
O)
1 Linear Regulator Solution
2.6V
VLSI Solution Oy Tampere Finland
Information here is non-authorative. Always check datasheet for details!
Important!
No inductors
- Use Ground Plane!
- All Grounds Together! (AGND/DGND)
VLSI Solution Oy Tampere Finland
Information here is non-authorative. Always check datasheet for details!
Clock
●
Clocking options
–
Internal Oscillator
●
–
External Clock to XTALI
●
●
Can use XTAL or Ceramic resonator
CMOS level or “strong” XTALOUT
from microcontroller's oscillator
XTAL recommendation: 12.288 ... 14.000 MHz
VLSI Solution Oy Tampere Finland
Information here is non-authorative. Always check datasheet for details!
Clocking
Important!
VLSI Solution Oy Tampere Finland
Information here is non-authorative. Always check datasheet for details!
Clock Selection
●
●
VS1011 and 1002 have clock doubler
–
Possible to select FRQ = XTALIN or XTALIN x 2
–
XTALIN from 12.288 (not all bitrates supported)
to 14 Mhz or from 24.576MHz to 28 MHz
VS1003 and VS1033 have clock multiplier
–
Many more selectons available
–
XTALIN from 8 MHz to 14.5 Mhz
–
FRQ is XTAL1 x 1 ... XTAL1 x 4.5
–
FRQ can be up to 49 MHz
VLSI Solution Oy Tampere Finland
Information here is non-authorative. Always check datasheet for details!
Core FRQ needed
●
●
●
●
28 MHz is needed to support all MP3 formats
with bass and treble enhancers
24.576 MHz is enough for most but not all
bitrates (320k vbr not ok)
Plug-ins, user applications, spectral enhancers
etc need more MHz.
Small bitrate files can be decoded with less
MHz to lower power consumption
VLSI Solution Oy Tampere Finland
Information here is non-authorative. Always check datasheet for details!
Core FRQ needed
●
For VS1033, XTAL x 3.0 is normal selection
–
●
●
Also you can allow the core to use up to 1.5x more
clock if more cpu power is temporarily needed for
decoding WMA streams
XTALIN x (SCMULT + SCADD) must not
exceed chip maximum (e.g. 49 Mhz)
Example: XTALIN is 13Mhz:
–
Clock Multiplier: 2.5 to get 32.5 Mhz basic FRQ
–
Allowed addition: 1.0 to get extra 13 Mhz when needed
–
Total maximum is 13 x (2.5 + 1.0) = 45.5 MHz
VLSI Solution Oy Tampere Finland
Information here is non-authorative. Always check datasheet for details!
MIDI files
●
●
●
●
MIDI synthesis uses all available basic FRQ
More MHz means more notes playing at the
same time
Select high SCMULT when playing MIDI files
for best sound quality
Use normal / low SCMULT to use less power
VLSI Solution Oy Tampere Finland
Information here is non-authorative. Always check datasheet for details!
RESET
●
●
Recommendation: drive xRST from
microcontroller pin to get HW reset if needed
Powerup/Powerdown reset circuitry is driven
from IOVDD (not CVDD!)
–
If CVDD falls below spec before IOVDD,
pops/clicks/sounds can happen
–
This is important mainly in the standalone player
VLSI Solution Oy Tampere Finland
Information here is non-authorative. Always check datasheet for details!
Pull unused inputs LOW !
●
●
Unused inputs can draw up to 2 mA extra
leakage power each!
GPIO pins are used for boot mode selection
–
●
●
Floating GPIO pins can result in wrong boot mode
and chip malfunction
It is OK to use only 1 resistor shared for all
unused inputs
TEST and RX pins need to be pulled HIGH !
●
No resistor needed
VLSI Solution Oy Tampere Finland
Information here is non-authorative. Always check datasheet for details!
ESD Protection
●
●
Use ESD protection for all
signals that go to external
connector
–
GBUF, LEFT, RIGHT
–
Line Input
–
External Microphone
If ESD protection is not used, attaching
headphone or line input can damage
chip (~0.1% probability?)
VLSI Solution Oy Tampere Finland
Information here is non-authorative. Always check datasheet for details!
VLSI Solution Oy Tampere Finland
Information here is non-authorative. Always check datasheet for details!
Thank you for your attention.
Please ask some questions!
You can also ask questions by email:
- [email protected] for the whole audio solution support team
- [email protected] for app.eng. Panu-Kristian Poiksalo
- [email protected] for app.eng. Pekka Lehtonen
VLSI Solution Oy Tampere Finland
Information here is non-authorative. Always check datasheet for details!