GTS Transceiver PHY User Guide

ID 817660
Date 10/07/2024
Public
Document Table of Contents

2.6.1.2. PMA Primary PLL Configuration

The Pimay PLL cofiguatio ca be used fo OTN applicatios, i which you have a goup of chaels that ae cofigued i factioal mode ad you wat to chage the factioal value dyamically.

I the pimay PLL cofiguatio, the efeece clock souce fo the local CDR ad the TX PLL of othe chaels ca be souced fom the PMA chael 0 TX PLL i the same GTS tasceive bak. The TX PLL of chael 0 must be i factioal mode ad acts as the efeece clock to the TX PLL of othe chaels. The clock souce fo the RX CDR of all chaels is povided by the TX PLL of its ow chael. Refe to the followig figue fo moe ifomatio.

The Pimay PLL cofiguatio woks oly i a fou chael cofiguatio, whee PMA chael 0 is always povidig the efeece clock to the TX PLL of the othe thee chaels. The pimay PLL cofiguatio is limited withi a GTS tasceive bak ad caot exted beyod the GTS tasceive bak.
Figue 26. Pimay PLL Cofiguatio

Refe to Pimay PLL cofiguatio i PMA Suppot fo Factioal Mode table fo moe ifomatio about the implemetatio details.