hallo,
i have 2 FPGAs(both Xilinx Virtex-4) on one Board, and only one Cable(Platform Cable USB). How can i configuration them under iMPact?
Somebody help me!!! :)
Cheng
hallo,
i have 2 FPGAs(both Xilinx Virtex-4) on one Board, and only one Cable(Platform Cable USB). How can i configuration them under iMPact?
Somebody help me!!! :)
Cheng
Using JTAG chain or using other configuration mode?
With two Xilinx FPGAs in the same JTAG chain, the Xilinx Impact software will auto-detect your both devices. Then Impact will ask to associated the .bit file for each devices ...
Regards, Laurent Gauch ____________________________
Thanks, Laurent
Is JTAG Chain = Boundary Scan Chain? Yes, it is "Automatically connected to a cable and identity Boundary Scan Chain".
Unfortunately, impact detect only one FPGA. Which mistakes cause this happen: PINs are not correctly connected? impact is not properly adjusted? or something else?
thanks again
Regards, Cheng
AMONTEC schrieb:
Hi Cheng,
JTAG = Boundary Scan = large shift-register (TDI TDO signals) + state machine TAP control (TMS signal) JTAG is a synchronous bus (TCK signal), as a SPI bus.
If Xilinx Impact only detect one device, this means you only have one device in the JTAG chain. You maybe have jumpers (or 0 ohm resistors) on your board for routing the JTAG chain.
Regards, Laurent Gauch ____________________________
Bingo,
thanks!!!!!!!!!!!!! Laurent,
Yes, there is a jumper.
Best Regards, Cheng
AMONTEC schrieb:
Nice for you ;-)
Regards, Laurent Gauch ____________________________
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