L- and H-Tile Transceiver PHY User Guide

ID 683621
Date 10/05/2023
Document Table of Contents
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7.5.7. Recalibrating Only a PMA Simplex TX in a Simplex RX Merged Physical Channel

Note: Address refers to the simplex TX 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 rx_cal_busy.
  2. Perform a RMW operation on 0x02 with mask 0x02 to address 0x100. This sets the PMA TX calibration enable bit.
  3. Write 0x01 to address 0x00. This lets the PreSICE perform the calibration.
    This activates tx_cal_busy and reconfig_waitrequest both high.
  4. Loop check tx_cal_busy and reconfig_waitrequest.
    • PMA TX calibration is complete when tx_cal_busy is low.
    • PreSICE returns control to you when reconfig_waitrequest is low.
  5. Set your design to remove the rx_cal_busy mask.