1. University of Calcutta CBM 1 ROC Design Issues Dr. Amlan Chakrabarti, Dr. Sanatan Chattopadhyay & Mr. Suman Sau

2. University of Calcutta CBM 2 Outline Basic Read Out System Interfacing With Analog Signal using SPI RS 232 Serial Communication Communication With TEMAC Ethernet Core Conclusion

3. University of Calcutta Basic Readout System Detector FEEBROC XYTER ADC Tag data ADC data clock FPGA control Front-End Board Read-Out Controller cable connection 2 N-XYTER 256 ch. LVDS signal cable Any PC Connectivity ETH PHY

4. University of Calcutta Interfacing With Analog Signal

5. University of Calcutta CBM 5 The Serial Peripheral Interface Bus or SPI bus is a synchronous serial data link standard named by Motorola that operates in full duplex mode. Devices communicate in master/slave mode where the master device initiates the data frame. Multiple slave devices are allowed with individual slave select (chip select) lines. The SPI bus specifies four logic signals. SCLK — Serial Clock (output from master) MOSI/SIMO — Master Output, Slave Input (output from master) MISO/SOMI — Master Input, Slave Output (output from slave) SS — Slave Select (active low; output from master) Serial Peripheral Interface Bus SCLK SPI Master MOSI MISO --- SS SCLK SPI MOSI Slave MISO --- SS

6. University of Calcutta Analog Capture Circuit in SPARTAN 3E

7. University of Calcutta Results Figure shows the digital values corresponding to the onboard analog voltage according to equation

8. University of Calcutta CBM 8 Analog module interfacing with FPGA PmodAD1 PmodDA2 Analog I/P (Audio Signal) PmodDA2 12-bit Digital Value 12-bit Digital Value I/P for D/A converter Analog O/P Spartan 3E FPGA SPI Bus Communication has been successfully established

9. University of Calcutta Real Time Digital Conversion of audio signal Top view of the implemented architecture

10. University of Calcutta Testing of the Audio Communication

11. University of Calcutta CBM 11 Analog module interfacing with FPGA P160 Analog Module Virtex-4LX/SX Development Board

12. University of Calcutta CBM 12 Problem Regarding P160& Virtex-4LX/SX Analog Module P160 is not physically adjustable with Virtex-4 LX/SX We need P240 Analog Module which is physically compatible. Order to buy P240 Analog Module already Placed

13. University of Calcutta RS 232 Communication

14. University of Calcutta CBM 14 Communication through RS232 RSA 32 bit Crypto core RS232_DCE LED Display RS232_DTE Downloading Bit File Real Time Data From Key Board Spartan 3E Board Ciphertext Send and Receive

15. University of Calcutta RSA Engine for Real Time Communication

16. University of Calcutta CBM 16 Communication through RS232 with PC

17. University of Calcutta Loop back Communication through RS232

18. University of Calcutta Communication with TEMAC Ethernet Core on ML505

19. University of Calcutta CBM 19 PHYPHY EMAC TEMAC Ethernet FIFO Address Swap Module TX Client FIFO RX Client FIFO TEMAC (Loop Back) Testing in ML505 It is a simple design that mirrors incoming Ethernet packets

20. University of Calcutta CBM 20 Status of the Ethernet Communication before running of the program Status of the Ethernet Communication after the program was run

21. University of Calcutta Conclusion Research team at C.U, can contribute in the CBM research: 1.Development of Firmware for ROC boards. 2.Testing of the ROC board with the Firmware to be supplied by GSI. 3.Board level testing of the ROC provided we can get funding for the manpower and testing equipments for board level testing. 4.Developmental activities for circuit design and process technology based research for the ASIC design, again we require some funding for this to procure the IC design tools. 5.Research for radiation hardened FPGA development.