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AR# 9188

CoolRunner XPLA3: How do I select a Universal Control Term? (UCLK, URST, UPST, UOE)

説明

Urgency: Standard

General Description:

How do I select a Universal Control Term? (UCLK, URST, UPST, UOE)

ソリューション

The Universal Control Terms are software (fitter algorithm)

determined. They are not controlled from the design entry

tools by an attribute or other. When these terms will be

used is design dependent.

For example: If a clock is driving a large number of

registers that are spread out across multiple Logic Blocks,

the software will decide if the UCLK would be a better

alternative than a Product Term clock. In this situation

it is very likely the UCLK will be used. The usage of a

UCLK can be verified in the report file.

AR# 9188
作成日 08/21/2007
最終更新日 12/15/2012
ステータス アクティブ
タイプ 一般