L- and H-Tile Transceiver PHY User Guide

ID 683621
Date 7/20/2022
Public
Document Table of Contents

7.5.6. Recalibrating Only a PMA Simplex RX in a Simplex TX Merged Physical Channel

Note: Address refers to the simplex RX channel offset address. When you merge a TX simplex and a RX simplex into the same physical channel, you cannot enable the background calibration feature.
  1. Set your design to mask out tx_cal_busy.
  2. Perform a RMW operation on 0x01 with mask 0x01 to address 0x100. This sets the PMA RX calibration enable bit.
  3. Write 0x01 to address 0x00. This lets the PreSICE perform the calibration.
    This activates rx_cal_busy and reconfig_waitrequest both high.
  4. Loop check rx_cal_busy and reconfig_waitrequest.
    • PMA RX calibration is complete when rx_cal_busy is low.
    • PreSICE returns control to you when reconfig_waitrequest is low.
  5. Set your design to remove the tx_cal_busy mask.

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