AR# 39029

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Virtex-6 - Incorrect phase shift from MMCM if using negative phase shifts

描述

For the MMCM clock outputs that are negatively phase shifted, the silicon does not match the expected phase shift(as reported in timing simulation, clocking wizard, User Guide).

解决方案

The negative phase shift values might not work due to a software issue.

To work around the problem, use the equivalent positive phase shift. For example, use "+270 degrees" instead of "-90 degrees".

This issue has been fixedthe ISE 12.4 design tools.

AR# 39029
日期 12/15/2012
状态 Active
Type 综合文章
器件 More Less
Tools
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