External Memory Interface Handbook Volume 3: Reference Material: For UniPHY-based Device Families
Visible to Intel only — GUID: mhi1457030058861
Ixiasoft
Visible to Intel only — GUID: mhi1457030058861
Ixiasoft
3.18.4.4. AFI Calibration Status Timing Diagram
At power-up, the PHY holds afi_cal_success and afi_cal_fail 0 until calibration is done, when it asserts afi_cal_success, indicating to controller that the PHY is ready to use and afi_wlat and afi_rlat signals have valid values.
At recalibration, the controller asserts afi_cal_req, which triggers the same sequence as at power-up, and forces recalibration of the PHY.