RapidIO Intel FPGA IP User Guide

ID 683884
Date 9/15/2021
Public
Document Table of Contents

3.1.3. Receive Priority Retry Thresholds

Retry thresholds can be set automatically by turning on Auto-configured from receiver buffer size, or manually by specifying the thresholds for Priority 0, Priority 1, and Priority 2. To specify valid values for these priority thresholds, follow these four guidelines:
  • Priority 2 Threshold > 9
  • Priority 1 Threshold > Priority 2 Threshold + 4
  • Priority 0 Threshold > Priority 1 Threshold + 4
  • Priority 0 Threshold < (receive buffer size x 1024/64)

Receive priority retry threshold values are numbers of 64-byte buffers.