Hi, Sir or Madam:
I have an issue in the TI DSP TMS320C6678 design;
We have referred to the TI DSP EVM C6678 schematic to reference code to design a single DSP card. When the C6678 DSP card in PCIe host boot mode also IPC Mother board’s BIOS is setup in PCIe Gen1 mode. The DSP card can found by every power cycle in Gen 1 also still can find the DSP card in Gen2 mode (if M/B only restart by soft-start also BIOS setup to Gen2 but power no shut down).
But the strange thing is the DSP card cannot find if BIOS setup in Gen 2 mode when power cycle again.
Could you tell me what is possible reason? Does it is hardware or software issue? Also whether is related the reset timing or sequence control of FPGA?
Thank you very much.