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  3. AR# 32816: Distributed Memory Generator v4.1 Rev1 - VHDL behavioral model drives unknown value on DOUT for Spartan-6 devices

AR# 32816

Distributed Memory Generator v4.1 Rev1 - VHDL behavioral model drives unknown value on DOUT for Spartan-6 devices

Description

The VHDL behavioral model for the Distributed Memory Generator v4.1 Rev1 Core drives an unknown value on DOUT for a Spartan-6 design.

Solution

This issue only occurs when using the VHDL behavioral model and only when both the Reset and Synchronous reset options are set to false in the GUI. The DOUT bus will correctly drive data when a read is performed.  

 

This issue will be fixed in the next version of the core released with ISE 11.3. 

 

Revision History 

06/24/2009 - Initial Release

AR# 32816
Date 05/21/2014
Status Archive
Type General Article