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some questions about PCIe

Question asked by t.alex on Apr 11, 2014
Latest reply on Apr 25, 2014 by Yiping Wang



I have gone through the Reference Manual of P3041 PCIe  but I am not clear of the following. Could someone help:

- Posted request and non-posted request: For outbound transfers, such as memory write to an external device, which one would the PCIe controller use?

- Outbound transaction size:  For example, from the software application, it performs some write into specific area predefined for PCIe outbound transfer (memory write).

How would the PCIe controller know how much data to transfer out each time?