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TMS320C6678: TMS320C6678 PHY Communication Failure Issue

Part Number: TMS320C6678

Hello Team,

Currently my customer is using TMS320C6678ACYPA25 on their product. They find that this DSP fail to communicate with their CPU by PHY interface randomly.

The use case is power on TMS320C6678ACYPA25 and use flash to bring up the device, use PHY to communicate with CPU. 

When we find issue, we tried to trigger TMS320C6678ACYPA25's Reset pin, but this test can't fix issue. 

When we find issue, we power off and on the whole product board, this issue is fixed.

Could you please help to give some debug suggestions on this issue? Thanks!