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J721EXCPXEVM: UDMA Tx state mapping table.

Mohammad Qasim Farooqi
Prodigy 40 points

Part Number: J721EXCPXEVM

Hi,

I am trying to service McASP using UDMA. After passing the descriptor to ring I set its doorbell register. When I set the doorbell register my Tx channel goes into error state (UDMA_TRT_CTL_j bit 0 goes high). I wanted to know what is the cause of this error. In TRM, I am trying to debug this issue using UDMA_TRT_STDATA_j_Y register, its description says "See Tx state mapping table". I am unable to find this Tx state mapping table.

1. Can you please tell me where this Tx state mapping table is located?

2. What could be the possible cause of Tx channel error?

Any help would be highly appreciated.

Regards,

Mohammad Qasim Farooqi