Arria® 10 Transceiver PHY User Guide

ID 683617
Date 4/01/2024
Document Table of Contents

6.16.1. Using PRBS Data Pattern Generator and Checker

Use the Arria® 10 PRBS generator and checker to simulate traffic and easily characterize high-speed links without fully implementing any upper protocol stack layer. The PRBS generator generates a self-aligning pattern and covers a known number of unique sequences. Because the PRBS pattern is generated by a Linear Feedback Shift Register (LFSR), the next pattern can be determined from the previous pattern. When the PRBS checker receives a portion of the received pattern, it can generate the next sequence of bits to verify whether the next data sequence received is correct.

The PRBS generator and checker are shared between the Standard and Enhanced datapaths through the PCS. Therefore, they have only one set of control signals and registers. The data lines from the various PCSs and shared PRBS generator are M