PPT 슬라이드

Grouping Operators

• Grouping operators in a given expression can help to guide some aspects of logic synthesis while enhancing the readability of the code.

Z <= A + B + C + D ;

Z <= ( A + B ) + ( C + D) ;

B

A

C

D

Z

3 logic levels

D

Z

A

B

C

2 logic levels

This is especially important when the target technology is LUT (Look-Up Table) based. Each added level of logic incurs additional block and routing delays.

+

+

+

+

+

+

41

이전 슬라이드

다음 슬라이드

첫 슬라이드로 이동

그래픽 버전 보기