PROGRESS ON ENERGY SUM ELECTRONIC BOARD

VXS Backplane Energy Sum 18 fADC VME64 High Speed Serial VME64 16 CH Detector Signals Crate Sum to Trigger Energy Sum In DAQ System

Parallel Or Serial Transmission Parallel Transmission 16 ADC per fADC x 18 fADC = 288 wires fADC data rate = 250 MHz => LVDS => 576 wires Difficult if not impossible to design backplane that balances 576 wires with each other and with clock Serial Transmission 36 LVDS wires 16 bits * 250 MHz => 4 GBits/Second VXS Bus Support up to 10 GBits/Second Commercially available VXS backplane Xilinx FPGA V4 with 6.5 GBits/Second Transceiver is now available But VXS ?????

Exploring VXS Scale Down Energy Sum PENTEK fADC

Exploring VXS Step # 1. Exploring Pentek Step # 2. Design Scale DownEnergy Sum Step # 3. Test Scale Down Energy Sum Step # 4. Energy Sum Bit Error Test Step # 5 Energy Sum and Pentek Step # 6. fADC Loop Back Step # 7. 2 fADC and Energy Sum Step # 8. Design Full Energy Sum Step # fADC and Full Energy Sum

Step # 1. Exploring Pentek CONNECTOR WITH 8 WIRES CONNECTING TX PINS TO RX PINS (4 LANES) JTAG ADC FIFO XILINX Aurora MGT Transmit UserCLK Receive Status FIFO FPGA VHDL CODE XILINX CHIP SCOPE PENTEK CLOCK ChipScope TxRx Tdelay Test Result : Tdelay = Extra Data 2.5 Gbits/Sec GBits/Sec DOUG CURRY

Step # 2. Design Scale DownEnergy Sum LINE SIM XLINX MANUAL DOUG CURRY Energy Sum

Step # 3. Test Energy Sum Tx Rx DAC2 Data Generator XILINX Aurora MGT Transmit UserCLK Receive Status Data Assembler FPGA VHDL CODE DAC3 XILINX CHIP SCOPE ENERGY SUM MHz CLOCK CONNECTOR WITH 8 WIRES CONNECTING TX PINS TO RX PINS (4 LANES) PC SCOPE JTAG Energy Sum DAC 2 DAC 3 HARDWARE SETUP FIRMWARE SETUP MGT IS SET UP TO RUN AT 2.5 GBPS FOR TEST GBPS FOR TEST 2

DAC 1 and DAC2 Measurement with Tektronics SCOPE 1.Test 1 (2.5 GBPS) DAC1 to DAC2 delay is 732 ns DAC Clock (UserCLK) is 125 MHz 2.Test 2 (3.125 GBPS) DAC1 to DAC2 delay is 580 ns DAC Clock (UserCLK) is MHz Test 1 #of UserCLK Test 1 Absolute Time = #of UserCLK* 8 ns Test 1 #of UserCLK Test 1 Absolute Time = #of UserCLK * 6.4 ns DAC1 to DAC2 DELAY MGT ReSYNC Interval Measurement with CHIPSCOPE No Missing Data No Extra Data Step # 3. Result Of Loop Back Test

Step # 3. Loop Back Test. DAC1 and DAC2 With TEK Scope

Step # 3. Loop Back Test. DAC1 and DAC2 With ChipScope

Step # 3. Loop Back Test. Resync Shown With ChipScope

Step # 4.Energy Sum Bit Error Test CONNECTOR WITH 8 WIRES CONNECTING TX PINS TO RX PINS (4 LANES) PC SCOPE JTAG Energy Sum DAC 2 DAC 3 HARDWARE SETUP DAC1 XILINX IBERT Integrate Bit Error Ratio Tester Tweaking MGT operating and electrical paramaters. FPGA DAC2 COLLECTOR CARD MHz CLOCK MGT IS SET UP TO RUN AT 2.5 GBPS FOR TEST GBPS FOR TEST 4

Step # 4 IBERT 2.5GBPS After 4 Hours

Step # 4 IBERT GBPS After 4 Hours

Step # 5 Energy Sum and Pentek Energy Sum Pentek PC 2 GENERATOR 125MHz SCOPE PC 1 HARDWARE SETUP

FIRMWARE SETUP DAC 2 Data Generator XILINX Aurora MGT Transmit UserCLK Receive Status Data Assembler FPGA VHDL CODE DAC 3 XILINX CHIP SCOPE COLLECTOR CARD M Hz CLOCK XILINX CHIP SCOPE PENTEK CARD XILINX Aurora MGT Receive Rx Data UserCLK Transmit Tx Data Status FPGA VHDL CODE 4 Lanes 16bits / lane 2.5 GBITS Lane 0 => Constant 0xAAAA; Lane 1 => Ramp Up Lane 2 => Constant 0xCCCC; Lane 4 => Ramp Down DAC 2 and DAC 3 show RampUp sent and received GENERATOR 125MHz Step # 5 Energy Sum and Pentek

USER_CLOCK is 125 MHz DELAY FROM DAC 2 to DAC 3 is 134 USER_CLOCK (1.072 uS) NO Missing Data MGT never lost lock in 8 hours MGT ReSYNC Interval is 4992 USER_CLOCK. Resync duration is 6 USER_CLOCK Step # 5 Energy Sum and Pentek. Result CONCLUSION: XILINX AURORA MGT CAN BE USED TO TRANSFER DATA FROM fADC TO ENERGY SUM.

Step # 6. fADC Loop Back To Be Continued Step # 7. 2 fADC and Energy Sum Step # 8. Design Full Energy Sum Step # fADC and Full Energy Sum