A.4.6. PCI Express-to-Avalon-MM Downstream Read Requests
The PCI Express Avalon-MM bridge sends PCI Express read packets to the interconnect fabric as burst reads with a maximum burst size of 512 bytes. For Endpoints, the bridge converts the PCI Express address to the Avalon-MM address space based on the BAR hit information and address translation lookup table values. The RX Avalon‑MM master port drives the received address to the fabric. You can set up the Address Translation Table Configuration in the parameter editor. Unsupported read requests generate a completer abort response.
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