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External loopback using a cable between the PCIe ports on the top side of the EVM (aka, connect the PCIe ports J8 and J11 with the cable in SDK documentation, and configure one port as RC, and the other port as EP)
Connecting a SSD card on the M.2 port and doing read/write to test basic read/write functionality
In parallel, checking with the team to see if we have another alternative, but I would like to set expectations that we most likely do not have a loopback example from one connector.
Apologies for the misunderstanding. I was referring to the J8 and J11 PCIe ports on the J721E EVM board and not the SK-TDA4VM board.
If the SK-TDA4VM board is being used there should be an E-key PCIe port and M.2 key PCIe port. If there is a reliable way to connect the two, then an external loopback can be achieved. However, we have not tried this out on our end, and there may be issues with signal integrity.
Best recommended method to test loopback would be to test with the J721E EVM board as they have the larger PCIe ports available and we have a recommended cable that can connect between these ports.
您好，如图所示，tda4vm的位号图上