LDPC IP Core User Guide

ID 683381
Date 4/04/2022
Public

4.1.3.1. LDPC IP Core Backpressure

The LDPC IP core allows you to use backpressure.

When out_ready goes low, the FIFO buffer stores the data produced by the encoder. If the FIFO buffer is almost full, it sends a signal that sets in_ready to low and stops the flow of input data from the source. At that point if out_ready goes high once again, the FIFO buffer outputs the stored data until it is almost empty. Then it sets in_ready to high to produce more data.