Hs2 Fpga Programmer Issue

[abdolalipour]

Hello All,

 

I have attached serially 4 Kintex-7 FPGA to program them in Serial JTAG configuration ,

All configuration works with 3 FPGA when we get to the 4 FPGA does not functioning at all.

I have replaced the HS2 with Xilinx Cable 2-3 and evry things is working.

It looks for me the issue of the FAN out of TMS and TCK signal . Is this is nothing to do with FTDI chip on the HS2 programmer whcih is going to limits the number of the FPGAs in the chain ?

 

Any body have tested HS2 with this configuration ?  any has solution for this ?

BR
Abbas

[attila]

Hello,

You might try to reduce the JTAG frequency of the cable. The JTAG-HS2 cable might be faster, too fast with this setup.

[abdolalipour]

Hello ,

This is the same even for the lowest frequncy of the cable arroung 125kHz.