UPGRADE YOUR BROWSER

We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

AR# 61909

UltraScale DDR3/DDR4 - app_wdf_data format clarification

Description

Version Found: DDR4 v6.0, DDR3 v6.0

Version Resolved: See (Xilinx Answer 69035) for DDR4, See (Xilinx Answer 69036) for DDR3

The format for using app_wdf_data to provide data with the write data command is as follows:

Burst Length: 8

8-bit design:

app_wdf_data={Burst7Byte0, Burst6Byte0, Burst5Byte0, Burst4Byte0, Burst3Byte0, Burst2Byte0, Burst1Byte0, Burst0Byte0}

16-bit design:

app_wdf_data={Burst7Byte1, Burst7Byte0, Burst6Byte1, Burst6Byte0, Burst5Byte1, Burst5Byte0, Burst4Byte1, Burst4Byte0, 
                          Burst3Byte1, Burst3Byte0, Burst2Byte1, Burst2Byte0, Burst1Byte1, Burst1Byte0, Burst0Byte1, Burst0Byte0}

Solution

(PG150) will be updated with a more detailed explanation of the app_wdf_data format and example.

Revision History

09/03/2014 - Initial Release

Linked Answer Records

Master Answer Records

Answer Number Answer Title Version Found Version Resolved
69036 UltraScale/UltraScale+ DDR3 - Release Notes and Known Issues N/A N/A
69035 UltraScale/UltraScale+ DDR4 - Release Notes and Known Issues N/A N/A
AR# 61909
Date 12/21/2017
Status Active
Type Known Issues
Devices
  • Kintex UltraScale
  • Virtex UltraScale
IP
  • MIG UltraScale
Page Bookmarked