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AR# 25062

10.1 Timing Constraints - BRAMS_PORTA and BRAMS_PORTB predefined groups not valid for Virtex-4 and Virtex-5

Description

When targeting a Virtex-4 or Virtex-5 device, and when using the BRAMS_PORTA or BRAMS_PORTB predefined groups, the following message is issued: 

 

XdmHelpers:789 - Processing property "TNM=BRAMS_PORTA : 

TG_clk133_BRAMS_PORTA" on signal "clk133": "BRAMS_PORTA" is not a valid predefined type for this architecture. 

 

XdmHelpers:789 - Processing property "TNM=BRAMS_PORTB : 

TG_clk133_BRAMS_PORTB" on signal "clk133": "BRAMS_PORTB" is not a valid predefined type for this architecture.

Solution

The BRAMS_PORTA and BRAMS_PORTB predefined groups are not supported in the Virtex-4 and Virtex-5 architectures.

AR# 25062
Date Created 09/04/2007
Last Updated 05/21/2014
Status Archive
Type General Article