AXI Streaming Intel® FPGA IP for PCI Express* User Guide

ID 790711
Date 7/08/2024
Public
Document Table of Contents

4.11. Credit Handling

The IP exposes link partner credit to you in the Transmit direction and application logic credits in the Receive direction. The credits are advertised as a limit value specified in the PCIe* specification. Apart from the AXI Streaming ready-valid handshake, you must check the availability of credits for transmitting and receiving the TLP. The IP handles credits using the Transmit and Receive flow control credit interfaces and depends on the configuration and modes used.

Note: Refer to Interfaces and Signals for details on the interface signals.