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C6657 PCIe buffer size

Kzk
Genius 5785 points

Hello,

It seems that PCIE subsystem has data buffer internally. Could you tell me about the size of Outbound and Inbound buffer indicated by ACT_STATUS register. How many sizes can EDMA send at once?

Regards,
Kazu

  • 0
    TI__Mastermind 35645 points

    Hi,

    Thanks for your post.

    For DMA event, a TR packet size would be ACNT bytes in case of A-Sync configured transfer and ACNT*BCNT  bytes would be transferred on each TR DMA event in case of AB-Sync configured transfer.

    At each time, a DMA transfer would send ACNT (A-Sync) and ACNT*BCNT (in case of AB-Sync) bytes.

    Thanks & regards,

    Sivaraj K

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  • 0
    TI__Mastermind 28085 points
    Hi,

    Take a look at below e2e thread, it should be help you for understanding the size of Outbound and Inbound buffer.

    e2e.ti.com/.../1537738

    Thanks,