V-Series Transceiver PHY IP Core User Guide

ID 683171
Date 7/26/2022
Public
Document Table of Contents

14.6.4. 8B/10B

The 8B/10B encoder generates 10-bit code groups from the 8-bit data and 1-bit control identifier.

In 8-bit width mode, the 8B/10B encoder translates the 8-bit data to a 10-bit code group (control word or data word) with proper disparity. The 8B/10B decoder decodes the data into an 8-bit data and 1-bit control identifier.

Note: For more information refer to the 8B/10B Encoder and 8B/10B Decoder sections in the Transceiver Architecture in Arria V Devices.
Table 238.  8B/10B Encoder and Decoder Parameters

Parameter

Range

Description

Enable TX 8B/10B encoder

On/Off

When you turn this option On, the PCS includes the 8B/10B encoder.

Enable TX 8B/10B disparity control

On/Off

When you turn this option On, the PCS includes disparity control for the 8B/10B encoder. You force the disparity of the 8B/10B encoder using the tx_forcedisp and tx_dispval control signal.

Enable RX 8B/10B decoder

On/Off

When you turn this option On, the PCS includes the 8B/10B decoder.

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