Intel: Cyclone® V uses PCI-Express (PCIe) with Avalon-MM interface. The description of the RxmByteEnable signal in the user guide says "DWORD enables for write data.", but for Read Transaction...
Category: PCI-Express
tool:-
Device: Cyclone® V
Also available for Read Transactions.
If the purpose is to obtain the Data Length of the Transaction, it is also possible to observe the TLP with the internal Avalon-ST signal.
Cyclone V Avalon-MM Interface for PCIe Solutions User Guide
https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug_c5_pcie_avmm.pdf
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