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AR# 59208

7 Series RLDRAM3- Can I send both a WRITE and READ commands in same user_cmd cycle?

Description

In PG150, figure 18-3 "RLDRAM 3 Client Interface Protocol (Four-Word Burst Architecture)", it shows at least one NOP operation in one user_cmd cycle.

However, it is not stated whether both a WRITE and READ command are allowed in the same user_cmd cycle.

Solution

For the RLDRAM3 controller with BL=4 and BL=2, WRITE and READ commands within the same user_cmd cycle are NOT allowed.
AR# 59208
Date Created 01/23/2014
Last Updated 01/07/2015
Status Active
Type General Article
Devices
  • Virtex-7
  • Kintex-7
  • Artix-7
IP
  • Memory Interface and Controller