E-Tile Transceiver PHY User Guide

ID 683723
Date 9/08/2023
Document Table of Contents
Give Feedback

9.2.11. 0x0014: TX/RX Width Mode

Attribute Code



Controls the TX/RX width mode.

  • 0x84[2:0]: 3'b001 to set TX in 20-bit width (NRZ only)
  • 0x84[2:0]: 3'b011 to set TX in 40-bit width (NRZ or PAM4)
  • 0x84[2:0]: 3'b100 to set TX in 16-bit width (NRZ only)
  • 0x84[2:0]: 3'b101 to set TX in 32-bit width (NRZ or PAM4)
  • 0x84[2:0]: 3'b110 to set TX in 64-bit width (PAM4 only)
  • 0x84[3]: 1'b1 to set TX in PAM4 mode
  • 0x84[3]: 1'b0 to set TX in NRZ mode
  • 0x84[6:4]: 3'b001 to set RX in 20-bit width (NRZ only)
  • 0x84[6:4]: 3'b011 to set RX in 40-bit width (NRZ or PAM4)
  • 0x84[6:4]: 3'b100 to set RX in 16-bit width (NRZ only)
  • 0x84[6:4]: 3'b101 to set RX in 32-bit width (NRZ or PAM4)
  • 0x84[6:4]: 3'b110 to set RX in 64-bit width (PAM4 only)
  • 0x84[7]: 1'b1 to set RX in PAM4 mode
  • 0x84[7]: 1'b0 to set RX in NRZ mode
  • 0x85[7:0]: 8'h00

PMA Can Be Running While Updating PMA Attribute?


Return Value {0x89[7:0],0x88[7:0]}