PCIe Configuration - 4.0 English

QDMA Subsystem for PCI Express Product Guide (PG302)

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4.0 English

Several factors can throttle outgoing non-posted transactions. Outgoing non-posted transactions are throttled based on flow control information from the PCIe® integrated block to prevent head of line blocking of posted requests. The DMA will meter non-posted transactions based on the PCIe Receive FIFO space.