Intel® Arria® 10 Transceiver PHY User Guide

ID 683617
Date 3/28/2022
Public
Document Table of Contents

4.3.1.3. Resetting the Receiver During Device Operation

Follow this reset sequence to reset the analog or digital blocks of the receiver at any point during the device operation. Use this reset to re-establish a link or after dynamic reconfiguration.

Clock Data Recovery in Auto Lock Mode

The step numbers correspond to the numbers in the following figure:

  1. Assert rx_analogreset and rx_digitalreset. Ensure that rx_cal_busy is low. You must reset the PCS by asserting rx_digitalreset every time you assert rx_analogreset.

  2. Deassert rx_analogreset after a minimum duration of 70 μs.
  3. Ensure rx_is_lockedtodata is asserted for tLTD (minimum of 4 μs) before deasserting rx_digitalreset.
Figure 205. Resetting the Receiver During Device Operation (Auto Mode)
Note: rx_is_lockedtodata will toggle when there is no data at the receiver input. rx_is_lockedtoref is a don't care when rx_is_lockedtodata is asserted.

Clock Data Recovery in Manual Lock Mode

Use the clock data recove