TMS320C6678: C6678 + FPGA SRIO: Transaction Timeout occurred on Non-posted transaction

Hello Champs,

1. Customer connected C6678 SRIO to FPGA (single lane).

2. He successfully used loopback mode to configure the LSU maintenance to access the DSP's CAR/CSR (HOP=1).

3. Then connecting to FPGA, the DSP, FPGA port initialization is OK, DSP (LANE3) register is ok ()（0x029001B8=0x00000002）

4. But when configurating LSU Maintenance, accessing both FPGA and DSP can cause Lsu_Stat的0b001（ — Transaction Timeout occurred on Non-posted transaction）， the CAR/CSR register are below:

Thanks.
Rgds
Shine