External Memory Interface Handbook Volume 3: Reference Material: For UniPHY-based Device Families

ID 683841
Date 3/06/2023
Document Table of Contents

16.9.1. Reading or Applying Calibration Settings

The Read Setting and Apply Setting commands let you read and write calibration settings directly.

The Read Setting and Apply Setting commands are available only for DDR3 and DDR4 interfaces on Arria 10 devices.

  1. Establish a connection to the desired interface.
  2. Select Read Setting or Apply Setting from the Settings folder under the target interface connection.
  3. Select the desired setting type.
  4. Select the desired rank shadow register to modify. (Leave this field blank if it is not applicable).
  5. Select the index of the pin or group to modify.
  6. (For the Apply Setting command) Enter the new value to apply to the desired location.
  7. Click OK .
    The setting is read (or applied) using a read/write at the address indicated in the Tcl command window. You can perform similar transactions using the On-Chip Debug Port.