Magic Blue Smoke

Archive for July 2007

 

Retention Mechanisms used in a Power Gated Design (Cont’d)

Last week, we discussed about the type of retention registers available. In this post let me highlight few more points Pro’s and Con’s of Single Pin Vs Dual Pin retention flops: Advantages of Single Pin: Minimal area impact Single signal controls retention Disadvantages of Single Pin: Performance Impact on the register Hold Time requirements for […]

Continue Reading...

Posted in Architecture | Comments Off on Retention Mechanisms used in a Power Gated Design (Cont’d)

 

Retention Mechanisms used in a Power Gated Design

Again coming back from last week’s training, there were some pressing concerns that led me to write a short note. (1) How can we retain state of some of the registers in the design? (2) How to deal with memory state? Let me try to explain each one of them based on last 2 design […]

Continue Reading...

Posted in Architecture | 3 Comments »

 

Power Gating Challenges

In the last few trainings I attended, most common question on everyone’s mind were Can you list out at a higher level the challenges of implementating power gating . Thought of listing them here (1) Design of the power switching Structure (2) Design of the power/sleep control blocks (3) Selection and use of retention registers and […]

Continue Reading...

Posted in low power general | 1 Comment »