Intel® Arria® 10 Transceiver PHY User Guide

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ID 683617
Date 3/28/2022
Public
Document Table of Contents

8.6.2. XCVR_A10_TX_TERM_SEL

Pin planner or Assignment Editor Name

Transmitter On-Chip Termination

Description

Controls the on-chip TX differential termination for different protocols.

Table 316.  Available Options

Value

Description

R_R1

100 Ohm

R_R2

85 Ohm

Note: For protocols such as QPI, you need to set this setting to R_R2. For all the other protocols, you can either set this setting to R_R1 or R_R2. The default value set for all the protocols other than QPI depends upon the data rate.When the data rate is less than or equal to 17.4 Gbps, the default value is R_R1. When the data rate is greater than 17.4 Gbps, the default value is R_R2.

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