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PRICE: Power reduction by placement and clock-network co-synthesis for pulsed-latch designs

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5 Author(s)
Yi-Lin Chuang ; Grad. Inst. of Electron. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Hong-Ting Lin ; Tsung-Yi Ho ; Yao-Wen Chang
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Pulsed latches have emerged as a popular technique to reduce the power consumption and delay for clock networks. However, the current physical synthesis flow for pulsed latches still performs circuit placement and clock-network synthesis separately, which limits achievable power reduction. This paper presents the first work in the literature to perform placement and clock-network co-synthesis for pulsed-latch designs. With the interplay between placement and clock-network synthesis, the clock-network power and timing can be optimized simultaneously. Novel progressive network forces are introduced to globally guide the placer for iterative improvements, while the clock-network synthesizer makes use of updated latch locations to optimize power and timing locally. Experimental results show that our framework can substantially minimize power consumption and improve timing slacks, compared to existing synthesis flows.

Published in:

Computer-Aided Design (ICCAD), 2011 IEEE/ACM International Conference on

Date of Conference:

7-10 Nov. 2011