E-Tile Transceiver PHY User Guide

ID 683723
Date 9/30/2022
Public
Document Table of Contents

2.2.3.1. TX PMA Options

Figure 24. TX PMA Options
Table 15.  TX PMA Options
Parameter Value Description
TX PMA modulation type

NRZ

PAM4

Select the TX PMA modulation type based on your usage.
TX PMA data rate

For PAM4, 2000-57800 Mbps

For NRZ, 1000 - 28900 Mbps

Specifies the transceiver TX data rate in units of megabits per second (Mbps).
Note: To achieve 57.8 Gbps, you must select the PMA direct high data rate PAM4 transceiver configuration rule.
Enable TX PMA div66 clock On/Off Enables or disables the TX PMA div 66 clock option.
Enable TX PMA bonding On/Off Enables or disables the TX PMA bonding option. The parameter configures the reference clock, synchronizes the master connections, and so on. Deskew logic requires data to be marked with a toggle bit. Refer to TX PMA Bonding.
TX PMA clockout post divider 1, 2, 4, 8 Specifies the post divider counter value for the tx_pma_clkout port.
TX PMA reference clock frequency 125 - 700 Selects the reference clock frequency options for the TX in MHz.

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