F-Tile Architecture and PMA and FEC Direct PHY IP User Guide

ID 683872
Date 11/04/2024
Public
Document Table of Contents

2.3.1.1.4. FHT Data Pattern Generator and Verifier

The data patte geeato is a desig-fo-test featue fo geeatig PHY data taffic. This featue allows you to debug the PMA without ivolvig the uppe potocol had IP layes. F-tile has a pseudo-adom biay sequece (PRBS) patte geeato o the PMA which opeates i all bit modes ad ca geeate seveal pattes. The patte ad size ae pogammable.

Thee ae pattes suppotig both NRZ ad PAM4. PRBS NRZ pattes ae diffeet fom PAM4 pattes. Fo the same settig, depedig o the ecodig mode, eithe PRBSx (NRZ) o PRBSxQ (PAM4) is cofigued. Diffeet specificatios such as CEI OIF ad IEEE 803.2 efe to quateay PAM4 pattes diffeetly. Fo example, QPRBS13 is idetical to PRBSQ13 ad QPRBS31 is idetical to PRBSQ31.

Table 16.  Suppoted Pogammable PRBS Pattes by Mode
NRZ Mode PAM4 Mode

PRBS7

PRBS9

PRBS11

PRBS13

PRBS23

PRBS318

PRBS58

PRBS7Q

PRBS9Q

PRBS11Q

PRBS13Q

PRBS23Q

PRBS31Q

PRBS58Q

Use-defied patte (32 bit, 64 bit, o 128 bit)
Alteatig 0s ad 1s patte (epeat oe, eight, o 64 times)

The data patte veifie fuctios like the geeato.

8

The PRBS31, QPRBS13, PRBS13Q, PRBS31Q, SSPR, SSPR1, ad SSPRQ PRBS geeato mode settigs ae ot cuetly suppoted though the IP GUI, although peset i the paamete edito. Do ot select ay of the usuppoted PRBS geeato mode settigs. Specify these settigs usig egistes.