R-Tile Avalon® Streaming Intel® FPGA IP for PCI Express* User Guide

ID 683501
Date 10/02/2023
Public

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4.3.1.2.3. Credit Update/Release

Once the initialization is completed, the source will decrement the credit available for transmission whenever it transmits a transaction. The source also increments the credit available count by *crdt_update_cnt whenever the sink asserts the *update signal.

Figure 30. Credit Update Timings