ENDCAP Alignment CMS CCD OPTICAL POSITION
Contents
1. Check communication between the ADC and DSP Eliminate found defects and check the readout board once more 8 Data received with the connected reference sensor has no peak Check a cable connection between the CCD sensor and the readout board Follow the CCD sensor output signals from the sensor connector P1 to the ADC Eliminate found defects and check the readout board once more Page 29 of 43 COPS Readout Board User s manual 10 Specification General Dimensions of the board 6 7 x 2 9 Sensor connector P1 10 x 2 header 3M 3428 6002 Input connector P2 10 x 2 header 3M 3428 6002 Output connector P3 10 x 2 header 3M 3428 6002 Board number switch SW1 8 x 2 double raw strip 3M 929665 09 36 I modified with shunts 3M 929957 08 Board number format binary Board number range 1 229 Warning The board number must be set before mounting of the readout board to its proper place Power characteristics Minimum input voltage 10 V Maximum input voltage 15 V Power consumption Idle mode 300 mW Conversion mode without sensor 355 mW Conversion mode with connected sensor 725 mW Current consumption Idle mode 30 mA 10 0 V 21 mA 14 2 V 20 mA 15 0 V Conversion mode without sensor 36 mA 10 0 V 25 mA 14 2 V 24 mA 15 0 V Conversion mode with connected sensor 73 mA 10 0 V 51 mA 14 2 V 48 mA 15 0 V On board power protection Fuse 0 5 A Each DC DC converter limits its output current Outp2. CMS CCD OPTICAL POSITION SENSOR READOUT BOARD User s Manual FNAL PNPI 2003 COPS Readout Board User s manual Contents 1 Introduction 3 2 Construction 3 3 Circuit Diagram 4 4 Application Notes 9 5 Functioning 9 6 CPLD Programming 14 7 Flash Memory Programming 16 8 Debugging and Testing 19 9 Troubleshooting and Maintenance 26 10 Specification 30 Appendix 1 Command Description 32 Appendix 2 CPLD Firmware Description 39 Appendix 3 Brief List of Commands 43 Page 2 of 43 COPS Readout Board User s manual 1 Introduction The readout board provides the CCD optical position sensor COPS with two voltages and three clock signals receives analog data from it converts data to a digital form processes digital data to decrease information flow DCOPS and transfers requested digital data to a host computer It provides a measurement of the board temperature also The readout board has two programmed components Xilinx CPLD and Atmel flash memory that must be programmed before using it The CPLD is mounted to the printed circuit board it can be programmed through the input connector P2 The flash memory must be programmed externally and then inserted into the socket The readout board has its own unique number address defined by set of eight shunts at SW1 8x2 pin strip This number must be set before using Data exchange is performed using serial protocol 8N1 8 bits Non parity 1 stop bit with LV
3. ddd the decimal board number in a range of 0 to 255 leading zeros can be omitted NM an abbreviation of the command name two letters pl p2 admissible command parameters can be omitted Any command must begin with a decimal board number A decimal card number is omitted in a description of commands but it is implied Parameters in square brackets can be omitted Warning Absence of the prompt and echo is possible in the following cases The first character is not a decimal digit Press ENTER and begin a new command with a digit The mentioned board number does not exist Press ENTER and input an existing board number The board number can represent a unique board number or group number assigned to some range of board numbers A group number allows simultaneous execution of a current command by all boards included into the mentioned range of numbers The latest command containing an individual board number makes this board active The active board produces both a prompt and an echo A prompt is the decimal board number enclosed in angle brackets lt ddd gt A group command does not affect to the active board number Numbers 0 to 229 are allocated for physical boards The board number 0 is dedicated for a debugging purpose only On power up or reset the board with number 0 becomes active and produces a continuous prompt until any key pressed Numbers 230 to 255 are allocated for group numbers By default the following r
4. L 0 does not affect to an execution Set the board number ranges for all groups to the default values Group Board number range 230 0 9 231 10 19 251 210 219 252 220 229 253 0 229 254 0 229 255 0 229 Transfer the board number range for groups M to N If N is omitted information about the group M is transferred if both parameters are omitted all groups are transferred The group containing the active board is marked by asterisk Assign the boards with numbers M to N to the group number G The group number 255 cannot be changed Page 35 of 43 COPS Readout Board User s manual SD D L PC MC OF PP WE PP Set the DAC offset value to the decimal number D Acceptable range of D is 0 to 4095 its value will be truncated to 4095 if D gt 4095 The default offset value is zero If both parameters are omitted the board transfers a current offset value This code will be loaded into the DAC in the following cases o By CC command o By AP command with the nonzero first and second parameters o By this command if 9V 5V power is turned on by the AP command and if L gt 0 is entered In this case the loading of the DAC is looped with L ms interval until any key pressed Transfer the board number and contents of the reboot counter DSP program memory error counter and flash memory error counter Test checksums of the DSP program memory DSP data memory and flash
5. Necessary equipment Computer running under Windows 9x NT 2000 RS 232 RS 422 adapter Interface board 1 Reference readout board RS 232 serial link DB9 DB9 cable RS 422 serial link RJ11 RJ11 cable Power cable for RS 232 RS 422 adapter Power cable for the interface board Three 20 conductor ribbon cables for connection of the readout board to the interface board reference sensor and reference readout board o 10 15 V power supply o Digital voltmeter 0 0 0 0 0 O 0 0 Software to be used o Hyper Terminal application Properly manufactured readout boards do not require any adjustments They should work at once after programming of the CPLD and flash memory This procedure is planned for the worst case If you have any problem it is recommended to perform all operations sequentially The Quick Fit male terminal P4 can be used as a ground pin during measurements 1 Check the assembled board visually It must not have visible damages All components and their values must be in accordance with documents 2 Program the CPLD as described in a chapter 6 3 Program the flash memory chip AT29LVOI0A as described in a chapter 7 Turn off power insert the programmed flash memory chip into the socket on the board 4 Set the board number acceptable range is 1 229 5 Connect the readout board under test to the interface board as shown in Fig 11 and switch on power Check 3 3V output voltage of the corresponding DC DC
6. converter A test point marked as 3 3V is arranged in area of the DC DC converter 6 Run Hyper Terminal application 7 Select the serial port COM1 or another if COM1 port is occupied as shown in Fig 12 Page 19 of 43 COPS Readout Board User s manual 8 Press button Configure 9 Select proper features as shown in Fig 13 115200 bps 8 bit None parity 1 stop bit None flow control RS 232 i RS 232 RS 422 Adapter m RS 422 Interface Adapter Power Cable Power Cable Board 1 Reference CCD Sensor Fig 11 Diagram of connections Page 20 of 43 COPS Readout Board User s manual Test HyperTerminal Iof x File Edit View Call Transfer Help Test Properties Connect To l Settings Ee Test Change Icon Country code United States of America 1 7 Enter the area code without the lona distance prefix Area code 703 Phone number Connect using com 7 Configure Usecounty code and area code Hedialon busy V r Connected 0 03 27 Auto detect Auto detect SCROLL CAPS NUM Capture Print echo Fig 12 Hyper Terminal Select a serial port 10 Turn on power input the board number followed by Enter You should receive a prompt containing the board number as a response If response is not received try once more in the following sequence Enter the board number Enter you could input illegal character If r
7. for all pixels N 3 a sum of values for each pixel with subtracted an average value for all pixels N is omitted or equal to any other decimal number an average value for each pixel Page 33 of 43 COPS Readout Board User s manual CS N CG N CE N Transfer the CCD data statistics values that is mean and RMS The first lines contains means of four CCDs in pixels the second line contains RMS in pixels decimal numbers N defines a kind of statistic calculation N 1 a sum of values for each pixel see CC and CR commands N 2 an average value for each pixel with subtracted an average value for all pixels N 3 a sum of values for each pixel with subtracted an average value for all pixels N is omitted or equal to any other decimal number an average value for each pixel Transfer CCD data with the subtracted background value If the background is set to zero by the CB command result is the same as for a CD command Output data are hexadecimal each line contains data of four CCDs in ADC counts N defines a kind of statistic calculation N 1 a sum of values for each pixel see CC and CR N 2 an average value for each pixel with subtracted an average value for all pixels N 3 asum of values for each pixel with subtracted an average value for all pixels N is omitted or equal to any other decimal number an average value for each pixel Transfer the CCD data stati
8. transfer means RMS for each CCD the board number contents of the reboot counter DSP program memory error counter and flash memory error counter in cycle until any key pressed Commands for Research Purpose V9 D S V5 D S VD Set the delay value after the 9V turning on D is a decimal number defining the delay value S gt 0 defines an order of turning on DC DC converters as 9V then 5V Turning off occurs in a reverse order The board transfers current settings in a case of V9 command without parameters Set the delay value after the 5V turning on D is a decimal number defining the delay value S gt 0 defines an order of turning on DC DC converters as 5V then 9V Turning off occurs in a reverse order The board transfers current settings in a case of V9 command without parameters Restore the default delay values and an order of turning on DC DC converters as 9V then 5V Turning off occurs in a reverse order The default delay after the 9V turning on is 100 ms The default delay after the 5V turning on is 3 s Page 37 of 43 COPS Readout Board User s manual DD aaaa bbbb Transfer a contents of data memory locations aaaa to bbbb Parameters must be hexadecimal numbers If bbbb is omitted the board transfers a contents of the location aaaa only WD aaaa dddd eeee Write 16 bit data word s dddd eeee and so on to the data memory locations starting fro
9. Front end electronics FE see scheme page 1 performs the function of correlated double sampling CDS of input signals It includes the analog switches 74HC4066 U1 U2 followers AD823 U3 U6 operational amplifiers OP463 U8A U8D a voltage reference LM4041 V1 and a digital to analog converter DAC LTC1451 U7 used to correct pedestal The analog switches U1 U2 are controlled by two signals BASESV and PEAK5V produced by the timer and converted to a high voltage level by U29 The DAC is loaded by the DSP through a 3 wire serial port DACSSV provides the DAC chip select and DACDSV presents serial DAC data in The general periphery clock SCLKSV is used for synchronization of the DAC ADC and serial ports of DSP It is provided by the timer All signals need to be level converted between 3 3V and 5V logic The default value loaded to DAC during initialization is 0 The front end electronics FE is powered by a 5V DC DC converter that is switched on during a conversion only Analog to Digital Converter ADC U9 see scheme page 1 converts four analog input signals into digital form using 4 096V V2 as a reference voltage The ADC is controlled by DSP through a 4 wire serial port ADCSSV provides ADC chip select ADCDSV presents serial ADC data in used for conversion control ADCOS5V presents ADC data output as a result of conversion The general periphery clock SCLK5V provided by the timer is used for synchronization of the
10. User s manual number switch The UART as a periphery device is used by any command in both receiving and response Commands listed below are executed inside of digital signal processor DSP including flash memory CB Load the CCD background for calculations CD Read CCD data from the DSP memory CE Read the calculated meaning and RMS with subtracted background CG Read CCD data with subtracted background from the DSP memory CR Load the conversion repeat number CS Read the calculated meaning and RMS DD Display contents of the mentioned data memory location DI Display contents of the mentioned IO memory location DP Display contents of the mentioned program memory location GD Display groups of the readout boards GO Go to the mentioned memory location GR Load default values for the groups GS Load board numbers for the mentioned group HE Display brief description of commands LC Load the firmware code into the DSP program memory directly OF Load the firmware code from the flash memory into the DSP internal program memory PC Display the board number and contents of the memory error counters SC Test a checksum display results for program data and flash memories V5 Load delay value ms between 5V switching on and start of conversion v9 Load delay value ms between 9V and 5V DC DC converters switching on VD Load default values of the switching on
11. delays WD Write a value to the mentioned data memory location WF Load the firmware code into the flash memory WI Write a value to the mentioned IO memory location WP Write a value to the mentioned program memory location The following commands initiate execution with the board peripheral devices AP Turn On Off 5V and 9V DC DC converters CC Start of the CCD data conversion RT Reliability test SD Load DAC TT Read a temperature of the board See Appendix 1 for full description of commands An execution of the above commands using peripheral devices must be considered more carefully Page 10 of 43 COPS Readout Board User s manual AP Turn On Off 5V and 9V DC DC converters The DSP produces 5VRUN and 9VRUN signals in a certain sequence see Fig 3 These continuous signals enable the corresponding DC DC converters A three second default delay is necessary for proper functioning of the CCDs It can be changed by V9 and VD commands Switching off occurs in the reverse order AP command 9VRUN 5SVRUN 3 s default Fig 3 Sequence of turning on for 9V and 5V DC DC converters CC Start of the CCD data conversion This command generates the most complicated execution 1 2 3 The DSP switches on the 9V DC DC converter After a delay defined as default or by the V9 VD commands the DSP switches on the 5V DC DC converter After a delay defined as defaul
12. memory transfer results Load the firmware code from the flash memory page PP into the DSP program memory PP is a hexadecimal number Load the firmware code into the flash memory page PP The board waits for loading of Motorola S file PP is a hexadecimal number Maintenance Commands AP N D Turn on off 9V and 5V DC DC converters D is a decimal number defining the DAC offset value N is a decimal number defining on off and debugging modes N 0 turn off 9V and 5V DC DC converters N gt 0O turn on 9V and 5V DC DC converters if they are turned off N 0 turn off 9V and 5V DC DC converters N gt 0andD gt 0 turn on 9V and 5V DC DC converters and load the DAC with the D offset value after voltages set in N 99 D gt 0 and 9V 5V DC DC are turned off turning on the DC DC converters loading of the DAC with the D offset value and turning off the converters are looped until any key pressed Page 36 of 43 COPS Readout Board User s manual RT N D The board transfers current state of DC DC converters in a case of AP command without parameters During an execution of the CC command 9V and 5V DC DC converters are switched on at the beginning and switched off at the end of conversion by the DSP no external command is required Reliability test 9V and 5V DC DC converters are turned on permanently The DSP performs the CCD data conversion processing of the received data
13. the following actions Enter OF command Press the Reset button on the board Perform cycling of power Warning Using of the WF command with a wrong code file can break a proper work of the board To restore an initial code perform one of the following actions Use the WF command with the proper code file Reprogram the flash memory see chapter 7 Page 23 of 43 16 17 18 COPS Readout Board User s manual Check a power control Input command AP with parameter 1 turn on CC Start of the CCD data conversion This command has a delay of execution about 3 seconds Check voltages at the test points marked as 9V and 5V by means of a digital voltmeter The voltages must be equal to the mentioned values with 5 tolerance Turn off DC DC converters lt 012 gt 12AP 0 Analog power is OFF lt 012 gt If the DC DC converters cannot be turned on by AP command or their output voltages are wrong see chapter 9 Check a load of the DAC The DAC is set to 0 as default during an initialization Load various values to the DAC U7 and check its output voltage at the pin 7 lt 012 gt 12SD 1000 DAC is set to 1000 output voltage must be 1 00 V lt 012 gt 12SD 2000 DAC is set to 1000 output voltage must be 2 00 V lt 012 gt 12SD 4000 DAC is set to 1000 output voltage must be 4 00 V lt 012 gt 12SD 0 DAC is set to 1000 output voltage must be 0 V lt 012 gt If the DAC output voltage do
14. Corrected CSADC clocking for 20 MHz clock Added status bit to check state of conversion sequencer Updated to layout as of 12 15 99 Changed timing to accommodate new UART Modified 3 29 00 by Vladimir Sknar Modified 6 06 01 for use with the third version of board S H Pin assignment is changed to correspond to the new layout CLK20 PWRST nWR nRD nlOMS DO A0 A4 TXENB IRQA Outputs nCLK nRS nROG BASE PEAK SCLK nADCCS TFO nPCIRD nPCIWRT nPCIA nIRQA nPRST RDADR nRDADR nTXENB UDly1 UDly0 Q3 Q0 PS2 PS1 PSO R1 RO DL1 DLO H L C X 1 0 C X pin 37 31 pin 38 39 44 pin 2 pin 3 5 6 8 10 pin 14 15 pin 18 19 20 pin 21 22 pin 35 23 42 pin 25 28 pin 27 43 34 pin 30 33 13 node node node node node Page 39 of 43 istype buffer istype reg_T istype reg_T istype reg_T istype reg istype buffer istype buffer istype reg istype reg istype reg istype reg istype reg_T COPS Readout Board Define State Machine states Run R1 RO0 Idle 0 0 Gate 0 1 Scan 1 1 Finish 1 0 Udly UDly1 UDly0 Dide 0 0 Waitt 0 1 Wait2 1 1 Wait3 1 0 User s manual Group signals into sets Addr A4 A0 PS PS2 PS0 Count Q3 Q0 Timing BASE PEAK nRS nCLkj DLROG DL1 DL0 Equations Registers Clock and Preset Count C Timin
15. DAC ADC and serial ports of DSP Apart from these the ADC produces the ready flag signal ADCFSV to inform DSP about its readiness to conversion All signals need a conversion of level between 3 3V and 5V logic The ADC is powered by a 5V DC DC converter that is switched on during a conversion only Page 4 of 43 User s manual COPS Readout Board p1eoq nopeal SGOO 9 Jo oinjon S SLA 10 99UU09 weansumoqg eS Joquinny pu uoJ4 prog SIO IOAUOD Od 0d DAU SCAT TOMUOIN JOSUS Teresy oinjesoduia duvod LNOdVvad JO OOUU0D SdOOd weansdA gt oO oO g S e oO Page 5 of 43 COPS Readout Board User s manual Level converter circuits U21 U29 see scheme page 3 convert 3 3V logic levels to 5V levels for the DAC ADC analog switches and CCD sensors U22 is used for reverse level conversion as it is tolerant to 5V levels U21 U29 are powered by the 5V DC DC converter that is switched on during a conversion only U22 is powered by a 3 3V DC DC converter Timer see scheme page 3 is established in the Xilinx CPLD U26 It produces the general periphery clock SCLK by continuously dividing the input 20Mhz clock by 10 Also it produces the control sequence 0CLK ORS OROG for CCD sensors BASE and PEAK for correlated double sampling circuitry O0ADCCS for analog to digital converter and start of conversion TFO for DSP conditionally The DSP produces a command addressed to th
16. DI Test Data In and TDO Test Data Out The TMS TCK and TDI signals come from the P2 input connector through the LVDS CMOS interface Also TMS and TCK are translated to the P3 output connector through the CMOS LVDS interface for use by the next readout boards The TDI signal comes to the input of CPLD the TDO signal goes from the CPLD to the P3 output connector through the CMOS LVDS interface and returns to host through a reverse chain See details in the CPLD firmware description Page 6 of 43 COPS Readout Board User s manual Digital signal processor DSP U24 see scheme page 3 performs general control and data processing It has a data bus DO D10 and an address bus A0 A13 used for data exchange with flash memory and the periphery devices board number switch SW1 U30 UART U28 and CPLD U26 The DSP produces OWR Write and ORD Read signals defining direction of data exchange and OBMS OIOMS Boot Memory Select and I O Memory Select respectively signals to define the address field The DSP runs at double the crystal frequency that is 20 MHz The timer uses this output clock signal also The DSP controls ADC and DAC through dedicated serial ports 0 and 1 respectively and the level converters U21 U22A U22B The digital thermometer U20 is connected to the DSP through a programmable serial port using I O pins The flash memory is connected to the DSP through parallel data and address bus Any operation wit
17. DS levels at 115 200 bps baud rate Baud rate is fixed and cannot be changed The readout board is ready to use after turning of a power No action is performed until a command is received the readout board is always in a state of waiting for commands 2 Construction The readout board is printed circuit board assembled with all its surface mount components apart from flash memory AT29LVO010A The flash memory chip is inserted into a socket after its programming There are three 3M 10x2 headers connectors on the board P1 for connection with COPS marked as SENSOR P2 input data exchange connector upstream marked as IN P3 output data exchange connector downstream marked as OUT The readout board has a 2 x 8 pin strip marked as SW1 BOARD NUMBER with eight shunts It is used to set the unique board number Non used shunts should be set to a single pin Hardware reset is available Press button SW2 marked as RESET is arranged on the printed circuit board Power cycling also provides a reset and initialize Page 3 of 43 COPS Readout Board User s manual 3 Circuit Diagram The readout board consists of the following basic parts see Fig 1 Front end electronics FE Analog to Digital Converter ADC Level converter circuits not shown Timer Digital signal processor DSP Universal asynchronous receiver transmitter UART LVDS interface DC DC converters gt gt S o gt Socooeoe o
18. LX503A only OCLK CCD clock BASE Enable black level capture PEAK Enable CCD data capture OADCS ADC chip select TFO Transfer flag starting the DSP operation with the ADC Note The system clock SCLK used by the ADC is produced by the timer continuously e The timer sequentially examines 2087 pixels including 2048 real pixels and 39 dummy ones during the conversion cycle The ADC converts the input data to a digital form The DSP reads the ADC output data and puts it into the data memory of the DSP In case of the flush cycle the DSP ignores these data Reading of the last pixel returns the timer to the initial Idle state 5 The DSP switches off the 5V DC DC converter 6 The DSP switches off 9V DC DC converter 7 The captured data are processed by the DSP and can be read with CD or CS commands from the data memory of the DSP 0 123 45 67 8 9 0 10111213140 ORS OCLK Fig 4 Sequence of signals during the CCD data conversion Page 12 of 43 COPS Readout Board User s manual RT Reliability test This command is intended for the test purposes only On receiving the RT command the DSP switches on the 9V and 5V DC DC converters once only staying them in this state Then the DSP performs conversions like as for the CC command and displays two lines of data The first line contains means of four CCDs the second one contains RMS of four CCDs the readout board number the number of conversion a cou
19. PLD and UART e Disconnect the reference readout board from the downstream connector P3 e Set the board under test number to 0 press the Reset button The readout board produces the continuous prompt until any key pressed e Using an oscilloscope check oscillators of the DSP and UART e Check a presence of output signals in the following path o U24 pins 19 20 24 OWR ORD OIOMS respectively If there are no signals make sure that there is no shortened conductors then reprogram the flash memory In case of the same result after reprogramming memory replace the DSP o U24 pins 97 98 99 100 1 are used to address the UART A0 A4 U24 pins 13 15 17 21 are used for data exchange DO D7 o Check a presence of the OWR ORD OIOMS and AO A4 at inputs of the CPLD U26 pins 38 39 44 3 5 6 8 10 respectively o The CPLD decodes these signals and produces OPCIWR OPCIRD OPCIA pins 28 25 27 to control the UART If there are no signals make sure that there is no shortened conductors then reprogram the CPLD o The UART receives OPCIWR OPCIRD OPCIA pins 15 19 10 from the CPLD address AO A2 and data directly from the DSP Check these signals at inputs of the UART O Page 27 of 43 COPS Readout Board User s manual o Check the output signal TX of the UART If all input signals of the UART are valid and there is no TX replace the UART e In case of presence the TX signal check the LVDS interface ci
20. ROG amp DL1 amp DLO PS 4 amp ISCLK amp nROG amp DL1 amp DLO DL1 T PS 4 amp ISCLK amp nROG amp DL1 amp DLO if nROG amp SCLK amp nROG amp DL1 amp DLO then Scan else Gate state Scan if InNIOMS amp InWR amp Addr h10 amp DO then Finish else Scan state Finish if Count 0 amp nADCCS then Idle else Finish State_Diagram UDly state Didle if InPCIA amp InRD nWR then Wait1 else Didle state Wait goto Wait2 state Wait2 goto Wait3 state Wait3 if nPCIA then Didle else Wait3 end Cops_New Page 42 of 43 COPS Readout Board User s manual Appendix 3 Brief List of Commands Commands are listed alphabetically AP Turn On Off 5V and 9V DC DC converters CB Load the CCD background for calculations CC Start of the CCD data conversion CD Read CCD data from the DSP memory CE Read the calculated meaning and RMS with subtracted background CG Read CCD data with subtracted background from the DSP memory CR Load the conversion repeat number CS Read the calculated meaning and RMS DD Display contents of the mentioned data memory location DI Display contents of the mentioned IO memory location DP Display contents of the mentioned program memory location GD Display groups of the readout boards GO Go to the mentioned memory location GR Load default values for the groups GS Load board numbers for the
21. a bus DO D7 e Replace the found failed component If the found failed part is the CPLD U26 reprogram it e Restore the initial board number Page 28 of 43 COPS Readout Board User s manual 4 Response to the entered TT or CD commands has a distortion Check a configuration of the serial port used for communication Check the used serial port with the reference readout board Check all cable connections If all external staff is valid follow point 3 of this chapter 5 Operation with some board numbers has no response other board numbers are valid Find shortened conductor or component and eliminate defect 6 The DAC cannot be loaded Input the AP 1 command 9V and 5V turning on Input command SD 1000 1 loading of the DAC in loop Check communication of the DAC and DSP with oscilloscope Eliminate found defects 7 Data received with disconnected CCD sensor exceed 20 hexadecimal Check output voltage of the DAC it must be zero Otherwise see point 6 of this chapter Check values of all resistors in the front end circuitry Input command CC 3 1 CCD data conversion in loop Check 9V and 5V voltages they must be turn on before a conversion and turn off after it Check all output signals produced by the timer to control the CCD sensor ORS OROG OCLK the front end BASE PEAK the ADC SCLK ADCS ADCD and their timing Follow these signals from the timer CPLD to targets
22. anges of numbers are assigned to group numbers Group Board number range 230 0 9 231 10 19 251 210 219 252 220 229 Page 32 of 43 COPS Readout Board User s manual 253 254 255 0 229 0 229 0 229 A group range can be reassigned by the GS command except for the group 255 Basic Commands HE CC N L CRE CD N Transfer a brief description of commands Execute the CCD data conversion put the received data into the memory N is a decimal number defining number of CCD flush cycles default N is equal to 10 Data are sampled RN Repeat Number times sum and average values are calculated for each pixel The repeat number RN is defined by the CR command RN 2 L is any decimal number except for zero It defines a continuous execution of the command for a debugging purpose L 0 does not affect to an execution Set the conversion repeat number RN E is an exponent of 2 0 1 2 3 that corresponds to numbers 1 2 4 8 The CR command defines the repeat number RN of the CCD data samples during execution of the CC command to calculate sum and average values for each pixel RN 2 Transfer CCD data from the DSP memory Output data are hexadecimal each line contains data of four CCDs in ADC counts N defines a kind of statistic calculation N 1 a sum of values for each pixel see CC and CR commands N 2 an average value for each pixel with subtracted an average value
23. connector of the readout board as shown in Fig 5 Switch on a power and check presence of 3 3V voltage on the readout board Run XPLA PC ISP Programmer 4 04 application Software must find out the download cable and CPLD Parallel Port Cable Readout board Terminator Fig 5 Programming of the CPLD Page 14 of 43 COPS Readout Board User s manual fa XPLA Programmer 4 13 File Check Cable Port Setup Devicelnfo ATE output OFF Batch Editor SS configuration Windows hry Configure JTAG chain devices Enter JTAG Chain Description JCD below Total device 1 Current JCD file P device UES Execute Device Device Name IRlength Operation __ Design filename result 4 xcR3064xL 5 o Verify u privatelprojecticpldicops_currenticops_ ie eS ee ae eee eae XCRSO64XKL 1 Fig 6 XPLA PC ISP Programmer window Select the device name XCR3064XL operation Program and design file name Cops New jed then press Execute button Change operation to Verify and press Execute button In case of positive result switch off power and disconnect the readout board from the download cable Page 15 of 43 COPS Readout Board User s manual 7 Flash Memory Programming Necessary equipment o Universal programmer DATA I O UNISITE with its TaskLink software The code image file intended for the programming of the AT29LV010A flash memory has bnm extension To program the flash memory follow the
24. e at a given time Set the unique board number for each board before it is included into the system Binary code is used for the board number Non used shunts should be placed on to a single pin as shown in Fig 2 Installed Swi O O O lt hunts _ Non used lt hms BOARD NUMBER Fig 2 Sample of the board number setting 19 5 Functioning The readout board is a passive device for a host It performs commands and transfers data as a response to commands from the host Each readout board has its unique board number used as an address The board number is set by shunts at SW1 The permissible range of numbers is from 0 to 229 Numbers 230 to 255 are reserved for group operations Installed shunt means logical 1 in the corresponding binary bit The board number 0 is used by firmware for testing and debugging purposes only Host commands come through the serial LVDS inputs P2 13 P2 14 receiver U11A to UART U28 and extends through the transmitter U14A and serial output P3 13 P3 14 to the next readout board The UART produces an IRQA interrupt signal U28 30 which is inverted by the CPLD U26 to OIRQA The DSP U24 receives the inverted interrupt signal reads the UART decodes the received command and performs it All acceptable commands can be separated into two groups commands executed by DSP itself and commands executed by the DSP with its periphery devices timer DAC ADC board Page 9 of 43 COPS Readout Board
25. e timer as a periphery device with address 16 that enables this control sequence to perform the reading of CCD sensor and conversion of received data The integrated circuit 74HCT365 U29 converts these 3 3V level signals to 5V level In addition the CPLD performs decoding of the DSP command to control the timer UART and the board number gates Any DSP command addressed to a periphery device is defined by an input output memory select signal IOMS transfer direction ORD read or OWR write and address AO A4 The DSP uses higher addresses internally and for operations with the flash memory The timer operates with the single data bit DO defining start and prolongation of the sensor data conversion The DSP commands addressed to UART are converted by the CPLD to a chip select signal OPCIA and read or write signals OPCIRD OPCIWR The used address field of UART is 0 7 The CPLD converts the DSP periphery read command with address 18 to a ORDADR signal that enables gates U30 to read the board number switch SW1 Finally the CPLD inverts the interrupt request IRQA to OIRQA for the DSP and the active board flag ACTIVE to OACTIVE for the LVDS interface In addition the CPLD produces a DSP reset signal uPRST caused by the hard reset signal PWRST or soft reset DSP command with address 17 Programming of the CPLD is performed through JTAG loop after PCB assembly Four signals are used for this purpose TMS Test Mode Select TCK Test Clock T
26. eck the 9VRUN and 5VRUN signals at pin 8 of U18 U19 they must be high e Ifthe 9VRUN and 5VRUN signals are high perform actions listed in point 1 of this chapter Page 26 of 43 COPS Readout Board User s manual e Ifthe 9VRUN and 5VRUN signals are low check these signals at outputs of DSP pins 86 and 85 respectively e If the 9VRUN and 5VRUN signals are high at outputs of DSP restore a damaged conductor e Ifthe 9VRUN and 5VRUN signals are low at outputs of DSP reprogram the flash memory 3 There is no response prompt to the entered board number e Connect the reference readout board to the downstream connector P3 e Set the reference board number to 0 press the Reset button The readout board produces the continuous prompt until any key pressed e Input the OTT command for the reference readout board If there is no response from it the LVDS interface circuitry of the board under test is invalid Check the following path o U15 pins 3 4 6 o Ul6 pins 12 11 10 8 o A high level must be at the U16 pin 13 it is determined by the OACTIVE signal produced by the DSP If OACTIVE is low check the shortened conductors and then reprogram the flash memory The last action is the replacing of the DSP o U12 pins 3 6 5 o Replace found invalid components e If there is a proper response from the reference readout board the LVDS interface circuitry of the board under test is valid Then it is necessary to check the DSP C
27. es not change see chapter 9 Check the CCD data conversion Input command CC lt 012 gt 12CC Flushes 10 Repeats exp2 val 0 1 lt 012 gt Time of execution is about 3 seconds Check data received during a conversion lt 012 gt 12CD 000A 0009 000B 0010 000A 0009 000B 0010 000B 0009 000B 0010 000A 0009 000B 0010 081A 0010 000B 000F 081A 0009 000B 0010 082A 0009 000B 0010 lt 012 gt Pay attention to data values Data received with disconnected CCD sensor must not exceed 20 hexadecimal If data are wrong see chapter 9 Page 24 of 43 COPS Readout Board User s manual 19 Complete test of the readout board with the reference sensor Turn off power Connect the reference CCD sensor to the connector P1 and turn on power Execute CC and then CD commands lt 012 gt 12CC Flushes 10 Repeats exp2 val 0 1 lt 012 gt 12CD 0060 006A 0070 0100 0062 006A 006F 0100 0061 006B 006F 00FF 0062 006A 0070 0100 0060 006B 0070 0100 0061 006A 006F 0101 0060 006A 006E 0100 lt 012 gt Data of each sensor have a peak If you cannot discover these peaks process the received data with Excel or similar application If data are wrong see chapter 9 This is a complete set of tests to find any malfunction of the DCOPS readout board The board fulfils requirements if all results are positive Page 25 of 43 COPS Readout Board User s manual 9 Troubleshooting and Maintenance Necessary equi
28. esponse is not received again see chapter 9 11 Check execution of the TT command Input the board number 12 for instance TT Enter As a response you should receive a current temperature in degrees of centigrade lt 012 gt 12TT lt 012 gt 24 6 C Bolded characters belong to the input command italic is used for a response of the readout board Enter is not shown If response is not received or it is wrong see chapter 9 Page 21 of 43 COPS Readout Board User s manual Test HyperT erminal Ioj x File Edit View Call Transfer Help Test Properties 21x Connect To Settings P COM1 Properties Port Settings Country Enteni Bits per second s20 a Data bits fe H Phone n Connect Parity None O Stop bits pooo Elow contrat Restore Defaults C cee ee T Connected 0 05 42 Auto detect lA uto detect SCROLL CAPS NUM_ Capture Print echo 7 Fig 13 Hyper Terminal Port settings 12 Check the LVDS interface at the downstream connector Connect the reference readout board to the downstream connector P3 Check execution of the TT command for the reference readout board with another board number If response is not received or it is wrong see chapter 9 Warning All reconnections must be performed with power turned OFF 13 Check the board number switch SW1 For that change the board number to 1 2 4 8 16 32 64 128 one shunt is set only and 0 Perform this
29. g C nADCCS C nPCIRD C nPCIWRT C CLK20 Run C UDly C PS C SCLK C TF0 C nROG C DLROG C CLK20 Count AP Timing AP nADCCS AP nPCIRD AP nPCIWRT AP PWRST Run AR UDly AR PS AR SCLK AR TFO AR PWRST nROG AP PWRST Run Gate DLROG AR PWRST Run Gate D0 1 from DSP Enable Idle gt Gate transition D0 0 from DSP Enable Scan gt Finish transition DO 1 is selfholding in all states excepting Idle D0 oe nIOMS amp nRD amp Addr h10 DO Run Idle Select lines for UART chip InIRQA IRQA InPCIA InlIOMS amp Addr lt h8 InPCIWRT InPCIA UDly Didle amp InwR InPCIRD InPCIA UDly Didle amp InRD DSP reset line InNPRST PWRST nIOMS amp nWR amp Addr h11 Page 40 of 43 COPS Readout Board Reading of the Board Number RDADR nlIOMS amp nRD amp Addr h12 INRDADR RDADR Enable Transfer InTXENB TXENB Prescale by 5 synchronously when PS 4 then PS PS 1 else PS 0 Divide CLK20 by 10 for SCLK 2 MHz SCLK T PS 4 User s manual Time onset of ADC Chip Select such that Sampling is done after Hold portion of Sample Hold nADCCS T PS 4 amp SCLK amp nADCCS amp Run Scan amp Count 7 nADCCS amp Count 14 amp TFO Start conversion by sending setup word TFO T PS 4 amp ISCLK amp TFO amp Run Scan a
30. h the flash memory is accompanied by the boot memory select signal OBMS All other periphery devices timer UART the board number switch are connected to the same data and address bus operation with them is accompanied by the input output memory select signal OIOMS DSP commands addressed to the UART have the address field 0 7 they are converted by the CPLD to OPCIA OPCIRD and OPCIWR signals The timer has address 16 Address 17 is used by the CPLD to produce a soft reset of DSP The DSP reads the board number and loads it to the random access memory RAM during initialization caused by the turning on power hard or soft reset To enable the gates U30 of the board number switch SW1 the DSP produces the read command to the periphery device with address 18 Programmable flags 9VRUN and 5VRUN are produced by the DSP to control the 5V and 9V DC DC converters The DSP confirms its activity periodically by a HRTBT signal that comes to the power monitor U27 The power monitor produces a PWRST Power Reset signal if it does not receive a HRTBT signal during certain time about 1 2 s The power monitor produces a PWRST signal on power up or by pressing the reset press button SW2 This signal initializes the UART and DSP The DSP needs an inverted reset signal therefore PWRST is inverted in the CPLD and comes into the DSP as uPRST Initialization of the DSP is a preset of its mode and loading of the program code from the first page of flash
31. m the address aaaa Parameters must be hexadecimal numbers DI aaaa bbbb Transfer a contents of I O memory locations aaaa to bbbb WI aaaa dddd DP aaaa bbbb Parameters must be hexadecimal numbers If nnnn is omitted the board transfers a contents of the location mmmm only Write 16 bit data word dddd to the I O memory location aaaa Parameters must be hexadecimal numbers Transfer a contents of program memory locations aaaa to bbbb Parameters must be hexadecimal numbers If bbbb is omitted the board transfers a contents of the location aaaa only WP aaaa dddddd eeeeee Write 24 bit instruction word s dddddd eeeeee and so on to the program memory locations starting from the address aaaa Parameters must be hexadecimal numbers GO aaaa Jump to the memory location aaaa Parameter must be a hexadecimal number LC Load the firmware code directly into the DSP program memory The board waits for loading of Motorola S file Page 38 of 43 COPS Readout Board Appendix 2 CPLD Firmware Description This firmware is written using Xilinx hardware description language HDL compiled with Xilinx WebPack and prepared to be downloaded with XPLA PC ISP Programmer module Cops_New title COPS timebase generator for CCD CDS DSP address decoder Inputs Sten Hansen Fermilab 06 06 01 Modified 7 31 98 for use with second version of board S H Added inversion for UARTB IRQ line
32. memory to the random access memory RAM of DSP Universal asynchronous receiver transmitter UART U28 see scheme page 3 works under DSP control and provides data exchange between the DSP and host through a LVDS interface DSP commands addressed to UART are converted by the CPLD to the chip select signal OPCIA and read or write signals OPCIRD OPCIWR The used address field of UART is 0 7 UART provides serial data transfer at 115 200 bps baud rate using 8N1 format that is 8 bits Non parity 1 stop bit LVDS interface see scheme page 2 provides LVDS CMOS and reverse level conversion for received transmitted data and JTAG signals It includes LVDS receivers Page 7 of 43 COPS Readout Board User s manual U10 U11 U15 and LVDS drivers U12 U13 U14 Connector P2 is upstream and connector P3 is downstream Data from the host through U11A comes to the UART data input RX and U14A driver also so the same data exists at the downstream connector P3 Output data TX from the UART comes to the P2 connector through the U16 gates and U12B driver if the current board is active Otherwise data from the next board in a chain comes through the P3 connector the U15B receiver U16 gates U12B driver to the upstream P2 connector and further on to the host The DSP selects a source of transmitted data by means of OACTIVE signal that controls the U16 gates JTAG signals include TMS Test Mode Select TCK Test Clock TDI Test Data In a
33. mentioned group HE Display brief description of commands LC Load the firmware code into the DSP program memory directly MC Test checksums display results for program data and flash memories OF Load the firmware code from the flash memory into the DSP internal program memory PC Display the board number and contents of the memory error counters RT Reliability test SD Load DAC TT Reada temperature of the board V5 Load delay value ms between 5V switching on and start of conversion V9 Load delay value ms between 9V and 5V DC DC converters switching on VD Load default values of the switching on delays WD Write a value to the mentioned data memory location WF Load the firmware code into the flash memory WI Write a value to the mentioned IO memory location WP Write a value to the mentioned program memory location See Appendix 1 for full description of commands Page 43 of 43
34. mp Count 7 TFO amp Count 0 Conversion is 15 cycles long Set modulo 15 counter Set nADCCS active Low Reset nADCCS High Set term Reset term when Run Scan Run Finish amp Count 14 amp PS 4 amp ISCLK then Count Count 1 else when Run Idle Run Gate Count 14 amp PS 4 amp ISCLK then Count 0 else Count Count Define timing generator outputs in terms of counter BASE T PS 4 amp ISCLK amp BASE amp Count 0 BASE amp Run Scan amp Count 4 PEAK T PS 4 amp ISCLK amp PEAK amp Count 0 PEAK amp Run Scan amp Count 10 nRS T PS 4 amp ISCLK amp nRS amp Run Scan amp Count 0 InRS amp Count 1 nADCCS nCLK T PS 4 amp ISCLK amp nCLK amp Run Scan amp nROG amp Count 0 Set term Reset term Set term Reset term Set nRS active Low Reset nRS High Set nCLK active Low InCLK amp Count 4 Run Scan amp nADCCS Reset nCLK High Page 41 of 43 COPS Readout Board User s manual State_Diagram Run state Idle if INIOMS amp InWR amp Addr h10 amp DO then Gate else Idle state Gate nROG T PS 4 amp ISCLK amp nROG amp DL1 amp IDLO PS 4 amp ISCLK amp InROG amp DL1 amp DLO DLO T PS 4 amp ISCLK amp In
35. nd TDO Test Data Out The TMS TCK and TDI signals come from the P2 input connector through U10A U10B and U11B respectively to the corresponding inputs of the CPLD Also the TMS and TCK signals are translated to the P3 output connector through U13A U13B for use by the next readout board The TDI signal comes to the input of the CPLD the TDO signal goes from the CPLD to the P3 output connector through U14B forming a daisy chain of CPLDs arranged on different readout boards The last daisy chained readout board returns the TDO signal to the host through a terminator inserted into the P3 connector U15A U12A P2 and previous readout boards DC DC converters see scheme page 2 provide three voltages 3 3V to supply digital circuitry 5V to supply analog front end ADC and CCD sensors 9V to supply CCD sensors only They operate in the same scheme using the LTC1474 step down converter U17 U18 U19 Using air core inductors permits them to work in a strong magnetic field The 3 3V converter is switched on always The 5V and 9V converters have program control from the DSP by means of SVRUN and 9VRUN signals Page 8 of 43 COPS Readout Board User s manual 4 Application Notes 1 The readout board has three connectors used for both signal transmitting and power connections Therefore it is very important to be sure that the power voltage is OFF before connecting or disconnecting any cable 2 Only one board can be activ
36. next instructions 1 Insert diskette 7 into the right B floppy drive of the DATA I O UNISITE device 2 Run the TaskLink application 3 Select type of a chip to be programmed For that sequentially select Setup gt Select Device gt ATMEL gt 29LV010A PLCC see Fig 7 Select a source of data For that sequentially select Data gt Load RAM from PC Network File TL ZAL mis p EXTENDED_ALG KEEP_CURRENT AMD Fig 7 TaskLink Select Device procedure Page 16 of 43 COPS Readout Board User s manual 5 x fws O O O 82 Motorola EXOR ciser M OK e b Fig 8 TaskLink Load RAM procedure 5 Enter the actual file name a pcops e bnm and select a translation format 82 Motorola EXORciser see Fig 8 6 Select a mode Program gt Program Verify 7 Select Process Devices 8 Select OK in the Process Devices window see Fig 9 9 Insert a chip and select the Start button see Fig 10 Page 17 of 43 COPS Readout Board User s manual TL i mn parameters are Sos Cancel Fig 9 TaskLink Process Devices procedure TL ioj x E AE AE R A A re E E ea f mA f ma ZE i Vi Tam gt Waiting for start Fig 10 TaskLink Program Verify Start procedure KNo selection KNo selection All iii are set tc a Page 18 of 43 COPS Readout Board User s manual 8 Debugging and Testing
37. nt of reboots a count of the program memory errors and a count of the flash memory errors The RT command is cycling until any key is pressed SD Load DAC The DSP produces DACS DAC Select and DACD DAC Data signals to load the mentioned value to the DAC The SCLK signal 2 MHz produced by the CPLD is used for synchronization of both the DSP serial port and the DAC These three signals come to the DAC through the level converter U21 TT Read a temperature of the board The DSP reads the temperature sensor U20 through the 3 wire serial link To control and read the temperature sensor the DSP produces the ORST signal used as a frame the clock signal and the control byte transferred as a data The output data of the temperature sensor are transmitted to the DSP using the same wire as the control byte Page 13 of 43 COPS Readout Board User s manual 6 CPLD Programming Necessary equipment Computer running under Windows 9x NT 2000 JTAG parallel download cable Power cable for JTAG adapter 20 conductor ribbon cable for connection of the readout board to the interface board 10 15 V power supply o Digital voltmeter O00 0 O Software to be used o XPLA PC ISP Programmer 4 13 application Warning Before programming of the CPLD check 3 3V on the board Connect the JTAG download cable to the parallel port of a computer and to a power supply Connect an output connector of the JTAG download cable to the P2
38. pment O 000000 0 O O O Computer running under Windows 9x NT 2000 RS 232 RS 422 adapter Interface board 1 RS 232 serial link DB9 DB9 cable RS 422 serial link RJ11 RJ11 cable Power cable for RS 232 RS 422 adapter Power cable for the interface board 20 conductor ribbon cable for connection of the readout board to the interface board 20 conductor ribbon cable for connection of the reference sensor to the readout board 10 15 V power supply Digital voltmeter Oscilloscope Software to be used O Hyper Terminal application Check a readout board in an order mentioned in chapter 8 then follow to the next recommendations Warning All reconnections must be performed with power turned OFF 1 Output voltage of the 3 3V DC DC converter is wrong Check an input voltage it must be 10 to 15 V Check soldering points Check values of the R45 and R46 resistors Check polarity of the V3 diode a silver band marks a negative pad Check polarity of the C11 and C17 tantalum capacitors a white band marks a positive pad e Ifthe previous checks do not discover a reason of failure replace the U17 LTC1474 integrated circuit 2 Output voltage of the 5V or 9V DC DC converter is wrong e Check a communication between the readout board and a host by the TT command if a communication failed begin with points 3 and 4 of this chapter e Input the AP 1 command Do not forget the leading board number e Ch
39. rcuitry following TX o UI6B pins 5 6 9 8 A high level must be at the pin 4 it is determined by the OACTIVE signal produced by the DSP and inverted by U16A If OACTIVE is high Check the shortened conductors Check an absence of the PWRST signal at the power monitor U27 output it must be low If PWRST is high check for Shortened conductors Latched up SW2 press button Presence of the HRTBT signal confirming an activity of the DSP Reprogram the flash memory Replace the DSP o Follow TX further U12 pins 3 6 5 e Eliminate defects and try the OTT command once more If there is no response follow the next instructions e Set the board number to 1 press the Reset button e Press and hold key 1 on a keyboard You can use any enough heavy object for this purpose to have hands free e Using an oscilloscope check a presence of an input signal at pins 1 and 2 of the U11A receiver Take a synchronization of oscilloscope from the pin 2 e Using another probe check an input signal path o UIL1Apin7 o UI4A pin 2 o UI4A pins 7 8 o U28 pin5 The UART U28 must produce an interrupt signal IRQA follow it o U28 pin 30 o U26pin 15 o U26pin 43 o U24 pin 26 The DSP U24 must read data from the UART and send an echo to it o U24 pins 20 19 24 o U26 pins 39 38 44 o U26 pins 25 28 27 o U28 pins 19 15 10 e Address bits AO A4 are used for decoding of the DSP command also Data exchange between the UART and DSP occurs through the dat
40. stics values that is mean and RMS with the subtracted background value If the background is set to zero by the CB command result is the same as for a CS command The first lines contains means of four CCDs in pixels the second line contains RMS in pixels decimal numbers N defines a kind of statistic calculation N 1 a sum of values for each pixel see CC and CR commands N 2 an average value for each pixel with subtracted an average value for all pixels N 3 a sum of values for each pixel with subtracted an average value for all pixels N is omitted or equal to any other decimal number an average value for each pixel Page 34 of 43 COPS Readout Board User s manual CB N TT L GR GD M N GS GMN Set the CCD background value This background value is used by CG and CE commands N is the decimal number defining a background value used by the CG and CE commands If N is specified it defines the background value as N for an average calculation and as N RN for a sum calculation where RN is a repeat number parameter of the CG or CE command If N is omitted the background value is defined by the average and sum calculated from the latest CCD data The default background value is zero Capture and transfer a current temperature of the readout board in degrees of centigrade L is any decimal number except for zero It defines a continuous execution of the command for a debugging purpose
41. t or by the V5 VD commands the DSP starts a series of CCD conversions This series consists of a number of flush cycles and one or several useful data conversions The flush cycle represents a data conversion cycle when the DSP ignores any digital data produced by the ADC The number of flush cycles is equal to 10 as default and it can be changed by a parameter of the CC command The number of useful data conversions is defined by the CR command to provide necessary statistic calculations The default number is 1 Both delays are necessary to set in the 9V and 5V voltages Each conversion cycle both flush and useful is executed by the timer synchronizing a work of the CCDs FE ADC and serial ports of the DSP The DSP starts the conversion cycle by means of addressing the timer IOMS address 16 data 0 Four CCD sensors are examined in parallel pixels are examined sequentially The timer established at the CPLD U26 completely defines the timing diagram of the conversion as following e The addressed timer changes its internal state from Idle to Gate see Appendix 2 CPLD firmware and produces the register output gate signal OROG to prepare CCD sensors for reading Then the timer changes its state to Scan Page 11 of 43 COPS Readout Board User s manual e The timer begins to produce a sequence of signals see Fig 4 controlling the CCD sensors correlated double sampling CDS circuitry and ADC ORS Reset CCD sensor I
42. test in the following sequence o Set the board number o Press Reset button SW2 o Try the TT command with this board number If any board number does not answer see chapter 9 Page 22 of 43 COPS Readout Board User s manual 14 Check execution of the CD command As a response you should receive 2048 lines containing data separated with semicolon lt 012 gt 12CD 0000 0000 0000 0000 0001 0001 0001 0001 0002 0002 0002 0002 0003 0003 0003 0003 OS81E 081E 081E 081E 081F 081F 081F 081F 0820 0820 0820 0820 lt 012 gt These data are written to the data memory during an initialization Pay attention to permanent length of lines If response is not received or it is wrong see chapter 9 15 It is not necessary to check all commands because their execution is provided by the DSP firmware Mentioned above tests check LVDS receivers and drivers UART DSP flash memory and operation of the DSP with flash memory and periphery devices the temperature sensor Warning Do not use the following commands v5 V9 W WP They are intended for an investigation only Wrong use of these commands can break a proper work of the board To restore an initial code perform one of the following actions Enter OF command Press the Reset button on the board Perform cycling of power Warning Using of the LC command with a wrong code file can break a proper work of the board To restore an initial code perform one of
43. ut current threshold 0 4 A Communication features Protocol asynchronous serial Transfer format 8N1 8 bits Non parity 1 stop bit Signal levels LVDS Baud rate 115 200 bps Termination 118 Ohm Page 30 of 43 COPS Readout Board Specification of connectors Sensor connector P1 5V output User s manual 5V output GND CCD1 input GND CCD2 input GND CCD3 input GND CCD4 input GND GND OROGSV output GND OCLKSV output GND ORSSV output GND 9V output Input connector P2 TCK input 9V output TCK input TDO output TDO output TMS input TMS input Non used GND TDI input TDI input GND GND RX input RX input TX output TX output GND GND 12V input Output connector P3 TCK output 12V input TCK output TDO input TDO input TMS output TMS output Non used GND TDI output TDI output GND GND TX output TX output RX input RX input GND GND 12V output 12V output Warning The 20 contact terminator must be installed into the output connector P3 if this board is last in a chain Page 31 of 43 COPS Readout Board User s manual Appendix 1 Command Description Command Format Format of any command for the readout board is the following ddd NM p1 p2 Where
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