testing results of pxl rdo board jtag daisy chain initial design pc fiber usb fiber usb digilent usb...
Post on 16-Jan-2016
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Testing results of PXL RDO board JTAG daisy chain
Initial design
PCFiberUSB
FiberUSB
DigilentUSB - JTAG
RDOboard
Schematic for Digilent USB-JTAG module PCB
Schematic for the PXL RDO Board JTAG daisy-chain cable
Initial testing with Digilent board:• This is the first opportunity to test the full compliment of 10 RDO boards.• Initial tests with the Digilent JTAG board to individual RDO boards have been and continue
to be successful.• Tested at different JTAG frequencies from default (6MHz) to lowest using ISE Impact 14.5• Tested for 4, 6, 8, 10 boards (using board bypass switches on the JTAG cable)• All tests failed – errors were
• Wrong number of devices found• Devices not recognized• Only some devices recognized
DigilentUSB-JTAG
board
PXL JTAGDaisy-chain
cable
Since the Digilent module based design did not work for multiple boards, we tried the standard Xilinx programmer.
• All RDO boards correctly recognized.• Configuration of individual boards successful in positions 5 and 10.• Flash configuration not tested.
XilinxUSB-JTAG
programmer
Successful 10 RDO board JTAG daisy-chain using Xilinx USB programming module and PXL JTAG chain cable.
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