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AR# 31159

10.1 EDK, MPMC v4.00.a - Chipselect (CS) asserted too late on Spartan-3 for successful precharge

Description

When using the MPMC in a Spartan-3 design in a dual-rank design, the chipselect is asserted too late after a read when switching banks. This could cause an activate failure and data corruption. In simulation, a memory model error similar to the following would occur: 

ERROR: Activate Failure. Bank 1 must be Precharged.

Solution

This issue is planned to be fixed starting in MPMC v4.03.a and later, to be released in EDK 10.1, Service Pack 3.

AR# 31159
Date Created 06/11/2008
Last Updated 05/21/2014
Status Archive
Type General Article