Arria® 10 Transceiver PHY User Guide

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

3.3.3. xN Clock Lines

The xN clock lines route the transceiver clocks across multiple transceiver banks.

The master CGB drives the x6 clock lines and the x6 clock lines drive the xN clock lines. There are two xN clock lines: xN Up and xN Down. xN Up clock lines route the clocks to transceiver banks located above the master CGB and xN Down clock lines route the clocks to transceiver banks located below the master CGB. The xN clock lines can be used in both bonded and non-bonded configurations. For bonded configurations, the low speed parallel clock output of the master CGB is used, and the local CGB within each channel is bypassed. For non-bonded configurations, the master CGB provides a high speed serial clock output to each channel.

Figure 177. xN Clock Network

The maximum channel span of a xN clock