AR# 14455


4.1i CPLD CoolRunner XPLA3 Hprep6 - Designs utilizing input registers do not function properly on the board


Keywords: 4.1i, 4.2i, CPLD, XPLA3, input register

Urgency: Hot

General Description:
In designs utilizing input registers, the design may not function properly on the board, even though it has passed timing simulation.


To work around this issue, disable Fast Input Register usage. This can be done in the WebPACK/Foundation ISE "Implement Design" properties or via the command line through use of the "-inreg off" switch.

This problem is fixed in the latest 4.2i Service Pack, available at:
The first service pack containing the fix is 4.2i Service Pack 3.
AR# 14455
日期 08/06/2003
状态 Archive
Type 综合文章
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