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GP2000 GC-IP2000 Evaluationboard Manual Version: 1.0 Date: 29.05.2009 GEMAC – Gesellschaft für Mikroelektronikanwendung Chemnitz mbH Zwickauer Strasse 227 · 09116 Chemnitz · Germany Telephone: +49 371 3377 – 0 · Telefax: +49 371 3377 – 272 E-mail: [email protected] · Web: www.gemac-chemnitz.de GEMAC GC-IP2000 Evaluation board Revision Overview Revision Overview Date 29.05.09 Revision 1.0 First version Change(s) © Copyright 2009 GEMAC Subject to change without prior notice. Our policy is one of continuous improvement, and consequently the equipment may vary slightly from the description and specifications in this publication. The specifications, illustrations and descriptions provided in this documentation are not binding in detail. No part of this publication may be reproduced in any form, or by any means, without the prior written permission of GEMAC – Gesellschaft für Mikroelektronikanwendung Chemnitz mbH. All rights according to the law on copyright remain expressly reserved to GEMAC. Document: PR_44010-DB-1-0-E-GP2000 2 / 12 GEMAC GC-IP2000 Evaluation board Table of Contents Table of Contents 1 Overview.......................................................................................................................................................4 2 Features........................................................................................................................................................5 3 Hardware......................................................................................................................................................6 3.1 Switches................................................................................................................................................6 3.2 LEDs......................................................................................................................................................6 3.3 Connectors............................................................................................................................................7 4 Characteristic Values...................................................................................................................................8 5 Configuration...............................................................................................................................................9 5.1 Configuration process............................................................................................................................9 5.2 Overview...............................................................................................................................................9 5.3 Configuration of sensor........................................................................................................................10 5.4 Configuration of digital interface...........................................................................................................10 5.5 Configuration of interpolation...............................................................................................................11 6 Quickstart...................................................................................................................................................12 Index of figures Fig. 1 Block diagramm....................................................................................................................................4 Fig. 2 Component place diagramm.................................................................................................................6 Fig. 3 Configuration area at PCB-bottom........................................................................................................9 Index of tables Table 1 Switches.............................................................................................................................................6 Table 2 LEDs..................................................................................................................................................6 Table 3 Power supply header X4....................................................................................................................7 Table 4 Sensor header X9..............................................................................................................................7 Table 5 Digital output header X11...................................................................................................................7 Table 6 SPI header X3....................................................................................................................................7 Table 7 Analog output header X10..................................................................................................................7 Table 8 Ground pins.......................................................................................................................................7 Table 9 Extension header J1 and J2...............................................................................................................8 Table 10 Characteristic values........................................................................................................................8 Table 11 Configuration possibilities.................................................................................................................9 Table 12 Configuration of the signal amplitude of GC-IP2000 .....................................................................10 Table 13 Configuration of termination resistor and reference mark input......................................................10 Table 14 Configuration of the sensor input...................................................................................................10 Table 15 Configuration of IO-Voltage............................................................................................................10 Table 16 Configuration of output Mode.........................................................................................................10 Table 17 Configuration of digital interface for typical applications.................................................................11 Table 18 Configuration of SPI hardware address..........................................................................................11 Table 19 Configuration of Clock...................................................................................................................11 Table 20 Configuration of interpolation rate..................................................................................................11 Table 21 Configuration of reference mark output.........................................................................................11 Table 22 Function of multi purpose switch S5...............................................................................................11 Table 23 Configuration of the hysteresis.......................................................................................................11 Table 24 Configuration of the minimum edge interval...................................................................................12 Table 25 Configuration default values...........................................................................................................12 Table 26 EEPROM default values.................................................................................................................12 Document: PR_44010-DB-1-0-E-GP2000 3 / 12 GEMAC GC-IP2000 Evaluation board 1 Overview 1 Overview The evaluation board GP2000 serves to demonstrate and evaluate the functionality of GEMAC interpolation circuit GC-IP2000. Serveral configuration options and connectors can be used to easily adapt the GC-IP2000 to a wide range of customers applications. It is possible to increase the resolution for incremental position and angular measuring systems with sinusoidal output signals offset by 90°. The IC on board divides the signal period up to 2048 times. Incremental encoders with voltage interface, encoders with current interface, photodiode arrays as well as measuring bridges can be connected directly. The evaluation board may operate with both single-ended and differential input signals. The configuration of the board is possible either via EEPROM, via switches or via serial interface. The input signals are subjected to a GEMAC-patented internal gain and offset control. The phase displacement of the input signals can be corrected as well. The quality of the signals issued by the sensors is monitored in the IC GP-IP2000. The board can be connected via RS422 to a standard interpolation counter as well as via fast serial interface (SPI) to any microcontroller. It can be connected to 5V systems and to 3.3V systems. The propagation delay of the IC is only 5µs. A data rate of up to 500000 values per second can be reached via the SPI interface. In addition, several build in functions of the IC GP-IC2000 like switchable analog filter, digital hysteresis, a timer and a multistage trigger make the board an ideal choice for use in fast controllers or control systems. Optional extension board via J1 and J2 (e.g. I/U-converter) OSC 25MHz POR X11: digital Digital configuration resistors X9: Sensor Sensor configuration resistors RS422 driver Interpolation IC GC-IP2000 X3: SPI X10: analog IC - configuration either EEPROM or switches Fig. 1 Block diagramm Detailed description of all functions can be found in the datasheet of GC-IP2000. Document: PR_44010-DB-1-0-E-GP2000 4 / 12 GEMAC GC-IP2000 Evaluation board 2 Features 2 Features Analog Part analog input - Sinusoidal / cosinusoidal / reference (index) signals; differential or single ended - Adjustable amplification for 1 Vpp / 500 mVpp / 250 mVpp / 75 mVpp - Input frequency max. 260 kHz for all resolutions - Configurable resistor network to connect current encoders or photodiode arrays - Optionally: active I/U converter to connect current encoders Digital Part Interpolation rate 100 / 128 / 200 / 256 / 400 / 500 / 512 / 800 / 1000 / 1024 / 1600 / 2000 / 2048 Output signals - 30-bit counter value via serial interface (SPI) - Up to 500000 measurement values per second - 90° square-wave sequences (A/B/Z) - Error signal - Interrupt signal to the µC - Auxiliary signals for sensor adjustment - RS422 interface - 5V or 3.3V interface to the µC Signal correction - Patented digital controller for the offset, control range ±10 % of standard amplitude - Patented digital controller for the amplitude, control range factor 0.5 ... 1.5 - Digital potentiometer with 40 steps for phase correction; selectable range ±5° or ±10° - LED control signal Possibilities of configuration Either: via configuration switches, the serial interface (SPI) or EEPROM SPI - Compatible to the standard SPI: 16-bit, MSB first - SPI clock up to 25 MHz - For configuration and measuring value output; not required for trivial systems - 5V or 3.3V interface Miscellaneous Supression of disturbances - Switchable analog noise filter - Digital hysteresis for suppression of the edge noise at the output Adaptation of IC to subsequent devices - Adjustable minimum edge interval at the output - Behaviour of IC in case of sensor error can be programmed - Adjustable width zero signal Z of ¼ or 1 period A/B Data logging - 2-stage measured-value trigger - Programmable timer - Constant delay between sampling and measurement value of 5 µs for all resolutions Important Characteristics Operating voltage 5 V DC I/O voltage, digital: 3.3 V DC or 5 V DC external or internal Temperature range: -40 ... 85°C Size PCB 80mm x 84mm Order Information Product Type Description Item No. GP2000 Evaluation board for interpolation IC GC-IP2000 PR-44010-00 I/U-converter I/U-converter for IPE2000 and GP2000 PR-44020-00 Document: PR_44010-DB-1-0-E-GP2000 5 / 12 GEMAC GC-IP2000 Evaluation board 3 Hardware 3 Hardware Fig. 2 Component place diagramm Schematic and layout are available free of charge by e-mail to [email protected]. 3.1 Switches Table 1 Switches Switch Function S1 Setting of output mode S2 Setting of input amplitude S3 Setting of digital hysteresis S4 Setting of minimum edge interval tpp S5 Setting of interpolation rate, SPI-hardware address and reference mark output S6 Setting of interpolation rate and SPI-hardware address Default 1 (AVSS) 1 (AVSS) off 1 (AVSS) 1 (AVSS) 0 A detailed description of all switches can be found in chapter 9. 3.2 LEDs Table 2 LEDs LED LD2 Power LED LD1 Sensor monitor Value off green green red Document: PR_44010-DB-1-0-E-GP2000 Meaning GP2000 not working GP2000 working Sensor signals valid Sensor adjustment necessary 6 / 12 GEMAC GC-IP2000 Evaluation board 3 Hardware 3.3 Connectors Table 3 Power supply header X4 Pin Name 1 DVDD 2 DVSS Direction Input Input Meaning Board supply voltage 5V Board supply ground Table 4 Sensor header X9 Pin 1 2 3 4 5 6 7 8 Name SINP SINN COSP COSN REFP REFN SENSVDD AVSS Direction Input Input Input Input Input Input Output Output Meaning Encoder signal sine positive Encoder signal sine negative Encoder signal cosine positive Encoder signal cosine negative Encoder signal refernce positive Encoder signal refernce negative Encoder power supply 5V Encoder ground Table 5 Digital output header X11 Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Name AP AN BP BN ZP ZN EP EN nTRGIN nRESIN CKIN CKOUT DVDDIO DVDDIO DVSS DVSS Direction Output Output Output Output Output Output Output Output Input w. pullup Input w. pullup Input Output Output Output Output Output Meaning Square wave Output A positive or GC-IP2000 output A resp. - See configuration of LJ3 Square wave Output A negative Square wave Output B positive or GC-IP2000 output B resp. - See configuration of LJ4 Square wave Output B negative Square wave Output Z positive or GC-IP2000 output Z resp. - See configuration of LJ5 Square wave Output Z negative Error Output E positive or GC-IP2000 output nERR resp. - See configuration of LJ6 Error Output E negative Trigger signal input; falling edge active Reset signal input; low active Clock input; See configuration of LJ2 Clock output Digital IO supply of GC-IP2000; See configuration of LJ7 Digital IO supply of GC-IP2000; See configuration of LJ7 Digital ground Digital ground Table 6 SPI header X3 Pin 1 2 3 4 5 6 7 8 9 10 Name SEN DVSS MOSI DVSS MISO DVSS SCK DVSS DVDDOUTEXT DVDDOUTEXT Direction Input w. pullup Output Input Output Output Output Input Output Input Input Meaning SPI enable Digital ground Serial data from SPI-Master to GC-IP2000 Digital ground Serial data from GC-IP2000 to SPI-Master Digital ground Serial clock Digital ground Output IO-Power; See configuration of LJ8 Output IO-Power; See configuration of LJ8 Table 7 Analog output header X10 Pin 1 2 3 4 5 6 Name SMON CMON LED V0BUF AVSS AVSS Direction Output Output Output Output Output Output Meaning analog test signal sine analog test signal cosine LED signal GC-IP2000 Buffered midvoltage of GC-IP2000; Maximum output current of signal V0BUF is 30mA Analog ground Analog ground Table 8 Ground pins Pin MP1 MP2 MP3 MP4 Name AVSS AVSS DVSS DVSS Direction Output Output Output Output Document: PR_44010-DB-1-0-E-GP2000 Meaning analog ground analog ground Digital ground Digital ground 7 / 12 GEMAC GC-IP2000 Evaluation board 3 Hardware Table 9 Extension header J1 and J2 Pin 1 2 3 4 5 6 7 8 9 10 11 Name AVDD AVDD V0BUF COSP COSN SINP SINN REFP REFN AVSS AVSS Direction Output Output Output J1: Output; J2 Input J1: Output; J2 Input J1: Output; J2 Input J1: Output; J2 Input J1: Output; J2 Input J1: Output; J2 Input Output Output Meaning analog supply voltage 5V (output) analog supply voltage 5V Buffered midvoltage of GC-IP2000; Maximum output current of signal V0BUF is 30mA Encoder signal cosine positive Encoder signal cosine negative Encoder signal sine positive Encoder signal sine negative Encoder signal reference positive Encoder signal reference negative analog ground analog ground It is possible to use the GP2000 in conjunction with an external I/U-converter (PR-44020-00) or customer specific electronics connected via extension header J1 and J2. All sensor signals, the midvoltage V0 and the analog supply voltage AVDD are available. J1 serves as output of GP2000 (input of external electronics) and J2 serves as input of GP2000 (output of external electronics). Configuration resistors R4-R15 do not have to be placed in that case. For more information please refer to chapter 9. 4 Characteristic Values Table 10 Characteristic values Symbol Characteristic value Min. Typ. Max. Unit DVDD Supply voltage 4.75 (4.5) 1) 5.0 5.5 V DVDDOUTEXT External interface voltage 2) 3.0 DVDD V DVDDIO Internal interface voltage 3.3 / 5.0 V IDD Current consumption 90 mA T Operating temperature TBD 85 °C FOSZ Internal clock frequency 25 MHz FOSZEXT External clock frequency 1 25 MHz V(V0BUF) Midvoltage V0BUF 2.1 2.25 2.4 V I(V0BUF) Output current on V0BUF 30 mA VOH Digital output voltage H Depends on configuration of LJ7 and LJ8 please refer to table 15 VOL Digital output voltage L VIH Digital input voltage H VIL Digital input voltage L 1) The control ranges and the interpolation accuracy are limited between 4.5V and 4.75V. 2) Not required if internal voltage is used Additionally, the characteristic values of the IC GC-IP2000 are valid. Document: PR_44010-DB-1-0-E-GP2000 8 / 12 GEMAC GC-IP2000 Evaluation board 5 Configuration 5 Configuration 5.1 Configuration process After resetting of the IC GC-IP2000, all registers of the IC are initialised with their default values. Thereafter, the configuration switches are read into the appropriate registers. If resistor R48 is placed and the EEPROM contains the value 0x99 at address location 0x00, the configuration registers are subsequently overwritten with the EEPROM values. During the whole RESET sequence, the pin MISO/nWAIT is maintained at L level. Subsequently, the configuration registers can be modified by way of the serial interface SPI. 5.2 Overview Table 11 Configuration possibilities Parameters Possible values Interpolation rate 2048,2000,1600,1024,1000,800 512,500,400,256,200,128,100 Minimum edge interval tpp 1.5, 3, 6, 12, 24, 48, 96, 192 Reference point Enable, Disable / 1 period, 1 increment Nominal signal amplitude 1Vpp, 500mVpp, 250mV pp, 75mVpp 2) Digital hysteresis Enable, disable Output signals A/B/Z (behaviour) ABZ mode, DSP mode, sensor adjustment Error processing Masking, latch enable, LED pin Phase correction ± 10° step width 0.5°, ±5° step width 0.25° Low-pass filter Enable, disable Gain controller Default setting / time constant / enable, disable Offset controller Default setting / time constant / enable, disable Trigger Trigger pulse edge, measurement timer Hardware EEPROM configuration configuration GC-IP2000 register / bit CFG1 / IR(3:0) S5 1), S6 1) S4 1) S5 1) S2 1), R4-R15 S3 1) S1 1) - SPI mode Synchronous, asynchronous SPI hardware address 0-15 S5 1), S6 1) Input characteristic Voltage / current R4-R14 EEPROM Disable / enable by EEPROM-ID R48 Sensor terminating resistor Any resistor value, e.g. 120Ω R38 - R40 Reference mark From scale / force L / force H LJ1 Clock Internal / external LJ2 Output signals A/B/Z (electrical) RS422, (LV)TTL LJ3 - LJ6 DVDDIO internal 3.3V / 5V LJ7 Interface voltage digital DVDDIO / external LJ8 1) If EEPROM is invalid or R48 is not placed 2) Any amplitudes (current or voltage) can be selected by changing resistors R4 – R15 CFG1 / TPP(2:0) CFG1 / DISZ, Z4 CFG1 / GAIN(1:0) CFG1 / DHE CFG1 / MODE (1:0) CFG1 / Mx, Lx, LEDMODE CFG2 / PHBER, PH(5:0) CFG1 / LPF CNTRLG, CFG2 / GAINCTL, DISCTL CNTRLO, CFG2 / OFFSCTL, DISCTL CFG1 / TRGSLP, CFG2 / VT(1:0),T(7:0) CFG2 / ASYNC, SYNC(4:0) CMD / SETHWA - Fig. 3 Configuration area at PCB-bottom Document: PR_44010-DB-1-0-E-GP2000 9 / 12 GEMAC GC-IP2000 Evaluation board 5 Configuration 5.3 Configuration of sensor Table 12 Configuration of the signal Input signals 1 Vpp (default) 500 mVpp 250 mVpp 75 mVpp amplitude of GC-IP2000 Switch S2 1 (AVSS) 3 (AVDD) 0 (V0) 2 (open) If resistor R48 is placed and the EEPROM contains the value 0x99 at address location 0x00, configuration of switch S2 is overwritten with the EEPROM value. Table 13 Configuration of termination resistor and reference mark input Sensor termination Termination resistor R38, R39, R40 No termination required Current sensor 120Ω termination required Not placed Not placed 120Ω each Reference mark provided by sensor Reference simulated as active Reference simulated as inactive Table 14 Configuration of the sensor input Sensor Switch S2 1Vpp differential (default) 1Vpp single ended 500mV pp differential 500mV pp single ended 250mV pp differential 250mV pp single ended 75mVpp differential 75mVpp single ended 2Vpp differential 2Vpp single ended 11µApp current 0.5µApp current Any voltage, Vin > Vnom Any current, IU-converter not used Any current, IU-converter used 1 (AVSS) 1 (AVSS) 3 (AVDD) 3 (AVDD) 0 (V0) 0 (V0) 2 (open) 2 (open) 1 (AVSS) 1 (AVSS) 3 (AVDD) 0 (V0) See table 12 See table 12 1 (AVSS) Reference mark generation Input-R Sig-P R5, R9, R13 Input-R Sig-N R7, R11, R15 0Ω 0Ω 0Ω 0Ω 0Ω 0Ω 0Ω 0Ω 10k 10k 0Ω 0Ω 10K · (Vin/Vnom - 1) 0Ω Not placed 0Ω Not placed 0Ω Not placed 0Ω Not placed 0Ω Not placed 10k Not placed 0Ω 0Ω 10K · (Vin/Vnom - 1) 0Ω Not placed V0-R Sig-P R4, R8, R12 Not placed Not placed Not placed Not placed Not placed Not placed Not placed Not placed 10K 10K 24K 250k 10k R = Vnom / (2·Inom). Not placed LJ1 LJ1BD 0Ω placed LJ1AB 0Ω placed LJ1BC 0Ω placed V0-R SigN R6, R10, R14 Not placed 0Ω Not placed 0Ω Not placed 0Ω Not placed 0Ω 10k 0Ω 24K 250k 10k R = Vnom / (2·Inom). Not placed If resistor R48 is placed and the EEPROM contains the value 0x99 at adress location 0x00, configuration of switch S2 is overwritten with the EEPROM value. 5.4 Configuration of digital interface Table 15 Configuration of IO-Voltage LJ7 LJ8 DVDDIO GC-IP2000 H-level Output 1) H-Level Input SPI CKIN nRESIN nTRGIN LJ7AB 0Ω placed LJ8AB 0Ω placed DVDD = 5V DVDDOUTEXT 2) 2.0-DVDD 2.0-3.3V 3) 3.5-5V 4) LJ7AB 0Ω placed LJ8BC 0Ω placed DVDD = 5V 3.8V – 5.0V 2.0-DVDD 3.5V-DVDD LJ7BC 0Ω placed LJ8AB 0Ω placed 3.3V DVDDOUTEXT 2) 2.0-3.3V 2.0-3.3V 3) 3.5-5V 4) LJ7BC 0Ω placed LJ8BC 0Ω placed 3.3V 2.4V – 3.3V 2.0-3.3V 2.0V-3.3V 1) Signals CKOUT, MISO as well as signals A, B, Z and nERR if LJ3-LJ6 configured in µC Mode 2) DVDD_OUTEXT provided external via X3/9 3) for DVDDOUTEXT = 3.3V 4) for DVDDOUTEXT = 5V RS422 possible yes yes no no Configuration of LJ7 and LJ8 for typical applications is shown in table 17. Table 16 Configuration of output Mode Mode Switch S1 ABZ square-wave 1 (AVSS) Controller / DSP 3 (AVDD) Sensor adjustment 1 0 (V0) Sensor adjustment 2 2 (open) LJ3-LJ6 Resistor AB 0Ω placed Resistor BC 0Ω placed any any If resistor R48 is placed and the EEPROM contains the value 0x99 at adress location 0x00, configuration of switch S1 is overwritten with the EEPROM value. Document: PR_44010-DB-1-0-E-GP2000 10 / 12 GEMAC GC-IP2000 Evaluation board 5 Configuration Table 17 Configuration of digital interface for typical applications Applikation LJ7 LJ8 S1 LJ3-LJ6 DVDDOUTEXT 1) RS422 and digital interface 3.3V LJ7AB 0Ω placed LJ8AB 0Ω placed 1 (AVSS) Resistor AB 0Ω placed 3.3V RS422 and digital interface 5V LJ7AB 0Ω placed LJ8BC 0Ω placed 1 (AVSS) Resistor AB 0Ω placed Not necessary Full µC interface 3.3V LJ7BC 0Ω placed LJ8BC 0Ω placed 3 (AVDD) Resistor BC 0Ω placed Not necessary 2) DVDDOUTEXT provided external via X3/9 Table 18 Configuration of SPI hardware address SPI adress Switch S5 Switch S6 Single channel any any 0 1 (AVSS) or 0 (V0) 0 1 1 (AVSS) or 0 (V0) 1 2 1 (AVSS) or 0 (V0) 2 3 1 (AVSS) or 0 (V0) 3 4 1 (AVSS) or 0 (V0) 4 5 1 (AVSS) or 0 (V0) 5 6 1 (AVSS) or 0 (V0) 6 7 1 (AVSS) or 0 (V0) 7 SPI address 8 9 10 11 12 13 14 15 Switch S5 3 (AVDD) or 2 (open) 3 (AVDD) or 2 (open) 3 (AVDD) or 2 (open) 3 (AVDD) or 2 (open) 3 (AVDD) or 2 (open) 3 (AVDD) or 2 (open) 3 (AVDD) or 2 (open) 3 (AVDD) or 2 (open) Switch S6 0 1 2 3 4 5 6 7 To activate multichannel SPI it is necessary to send the SPI-Brodacast-command SETHWA. Please refer to the data sheet of GCIP2000. In multichannel mode IC4 and R25 must not be placed at more than one GP2000. Table 19 Configuration of Clock Clock signal Internal 25MHz External via X11/11 LJ2 Resistor AB 0Ω placed Resistor BC 0Ω placed 5.5 Configuration of interpolation Table 20 Configuration of interpolation rate Interpolation rate Switch S5 2000 1 (AVSS) or 0 (V0) 0 1600 1 (AVSS) or 0 (V0) 1 1000 1 (AVSS) or 0 (V0) 2 800 1 (AVSS) or 0 (V0) 3 500 1 (AVSS) or 0 (V0) 4 400 1 (AVSS) or 0 (V0) 5 200 1 (AVSS) or 0 (V0) 6 100 1 (AVSS) or 0 (V0) 7 Switch S6 Interpolation rate Switch S5 2048 3 (AVDD) or 2 (open) 0 1024 3 (AVDD) or 2 (open) 1 512 3 (AVDD) or 2 (open) 2 256 3 (AVDD) or 2 (open) 3 128 3 (AVDD) or 2 (open) 4 1000 3 (AVDD) or 2 (open) 5 1000 3 (AVDD) or 2 (open) 6 1000 3 (AVDD) or 2 (open) 7 Switch S6 If resistor R48 is placed and the EEPROM contains the value 0x99 at address location 0x00, this configuration is overwritten with the EEPROM value. Table 21 Configuration of reference mark output Reference mark width Switch S5 1 increment = ¼ period 1 (AVSS) or 3 (AVDD) 4 increments = 1 period 0 (V0) or 2 (open) Disable Not configurable via S5 Table 22 Function of multi purpose switch S5 Switch S5 Interpolation rate decimal 1 (AVSS) 3 (AVDD) binary 0 (V0) decimal 2 (open) binary EEPROM-Adress 0x0C Bit 5 0 (or EEPROM invalid or R48 not placed) 0 (or EEPROM invalid or R48 not placed) 1 (EEPROM must be valid and R48 is placed) Reference mark width 1 increment = ¼ period 1 increment = ¼ period 4 increments = 1 period 4 increments = 1 period SPI hardware address <8 ≥8 <8 ≥8 Table 23 Configuration of the hysteresis Digital hysteresis Switch S3 deactivated ON activated OFF If resistor R48 is placed and the EEPROM contains the value 0x99 at address location 0x00, this configuration is overwritten with the EEPROM value. Document: PR_44010-DB-1-0-E-GP2000 11 / 12 GEMAC GC-IP2000 Evaluation board 5 Configuration Table 24 Configuration of the minimum edge interval Min. edge interval tpp Switch S4 EEPROM-address 0x0D Bits 2:0 1/fOSZ 1 (AVSS) 000 (or EEPROM invalid or R48 not placed) 2/fOSZ 3 (AVDD) 001 (or EEPROM invalid or R48 not placed) 4/fOSZ 0 (V0) 010 (or EEPROM invalid or R48 not placed) 8/fOSZ 2 (open) 011 (or EEPROM invalid or R48 not placed) 16/f OSZ Not configurable via S4 100 (EEPROM must be valid and R48 is placed) 32/f OSZ Not configurable via S4 101 (EEPROM must be valid and R48 is placed) 64/f OSZ Not configurable via S4 110 (EEPROM must be valid and R48 is placed) 128/fOSZ Not configurable via S4 111 (EEPROM must be valid and R48 is placed) If resistor R48 is placed and the EEPROM contains the value 0x99 at address location 0x00, this configuration is overwritten with the EEPROM value. 6 Quickstart To set the board into operation, a voltage of 5V must be connected to power header X4. The evaluation board GP2000 will be delivered with default configuration in its EEPROM and its configuration jumpers. Encoders with an amplitude of 1Vpp can be connected directly. RS422 signals as well as SPI signals are available. SPI may work with 5V or 3.3V voltage. Appropriate voltage has to be provide at connector X3, at pins 9 and 10. To check the input signals the monitor signals SMON and CMON can be used. Default amplitude at this signals is 2.1Vpp. Table 25 Configuration default values Ressource Value R48 Resistor 0Ω placed R38, R39, R40 Resistor 120Ω not placed R5, R7, R9, R11, R13, R15 Resistor 0Ω placed R4, R6,R8,R10,R12, R14 Resistor 0Ω not placed LJ1 Resistor LJ1BD 0Ω placed LJ2 Resistor LJ1AB 0Ω placed LJ3-LJ6 Resistor LJxAB 0Ω placed LJ7 Resistor LJ7AB 0Ω placed LJ8 Resistor LJ8AB 0Ω placed S1 1 (AVSS) S2 1 (AVSS) S3 off S4 1 (AVSS) S5 1 (AVSS) S6 0 Meaning EEPROM configuration will be used High impedance termination for all encoder signals Direct differential input all encoder signals Direct differential input all encoder signals Reference mark signal of encoder will be used Clock signal 25MHz (internal) will be used. RS422 interface will be provided at digital output header X11 DVDDIO voltage of GCIP2000 is 5V; RS422 interface is available SPI driver voltage will be provided external from X3/9 not used if EEPROM valid, output mode RS422 otherwise not used if EEPROM valid, nominal amplitude of 1Vpp otherwise not used if EEPROM valid, digital hysteresis enabled otherwise not used if EEPROM valid, edge interval tpp of 40ns otherwise not used if EEPROM valid, reference mark witdh of 1 increment otherwise not used if EEPROM valid, interpolation rate of 2000 otherwise Table 26 EEPROM default values Resource Usage analog input Nominal amplitude 1Vpp ABZ Active, ABZ-Output, 1 increment with output pulse Z Interpolation rate 2000 Min. edge interval tpp 1/fOSZ Sensor monitoring Square wave mode, latching disabled, LED default mode Timer / Trigger / SPI Standard, Timer off Automatic Controller Active, standard Filter, Hysteresis Active EEPROM 0x1D 0x1C 0x1B 0x1A 0x19 0x18 0x17 0x16 0x15 0x14 0x13 0x12 0x11 0x10 0x0F 0x0E 0x0D 0x0C ... 0x00 ADR 0x00 0x00 0x00 0x00 0x00 0x00 0x04 0x00 0x04 0x00 0x00 0x00 0x10 0x00 0x40 0x3F 0x10 0x00 - 0x99 DAT A detailed description of all values can be found in the datasheet of GC-IP2000. Document: PR_44010-DB-1-0-E-GP2000 12 / 12