Intel® Cyclone® 10 GX Transceiver PHY User Guide

ID 683054
Date 4/14/2023
Public
Document Table of Contents

8.9.1. XCVR_C10_REFCLK_TERM_TRISTATE

Pin planner or Assignment Editor Name

Dedicated Reference Clock Pin Termination

Description

Specifies if the termination for dedicated reference clock pin is tri-stated. It defaults to TRISTATE_OFF for non-HCSL cases.

Table 249.  Available Options

Value

Description

TRISTATE_OFF

Internal termination enabled and on-chip biasing circuitry enabled

TRISTATE_ON

Internal termination tri-stated. Off-chip termination and biasing circuitry must be implemented

Table 250.  Rules

I/O Standard

Value

HCSL

TRISTATE_ON

CML

TRISTATE_OFF

LVPECL

TRISTATE_OFF

LVDS

TRISTATE_OFF

Assign To

Reference clock pin.

Syntax

set_instance_assignment -name XCVR_C10_REFCLK_TERM_TRISTATE <value> -to <dedicated refclk pin name>