Arria® 10 Transceiver PHY User Guide

ID 683617
Date 4/01/2024
Public
Document Table of Contents

7.3. Power-up Calibration

After the device is powered up and programmed, PreSICE automatically initiates the calibration process. The calibration process may continue during device programming. The time required after device power-up to complete the calibration process can vary by device. The total time taken can extend into the user-mode. The cal_busy signals deassert to indicate the completion of the calibration process. You must ensure that the transceiver reset sequence in your design waits for the calibration to complete before resetting the transceiver PLL and the transceiver channel.

The PreSICE may still control the internal configuration bus even after power-up calibration is complete. You can request access when needed. If a system has an fPLL, an ATX PLL, and channels, the fPLL cal_busy signal goes low first. The ATX PLL cal_busy signal goes low after the channels’ tx_cal_busy and rx_ca