Stripe based self-gating for retiming pipelines
US10917094B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 2019 |
| Grant date | Feb 9, 2021 |
| Priority date | — |
| Expiry date | Jul 26, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Systems, apparatuses, and methods for implementing stripe-based self-gating and change detect signal propagation for retiming pipelines are disclosed. A circuit includes one or more stripes, with each stripe including a plurality of stages of registers, with each stage only receiving input signals from the preceding stage. For a given stripe, the first stage of registers are self-gated to reduce power consumption by only clocking a group of registers when any of their input signals change. The self-gating signals of the first stage of registers are combined together to create a change detect signal which is passed through a register and provided to a second stage of registers as a clock-enable signal. Accordingly, the second stage registers are only clocked when the change detect signal indicates a change will be forwarded from the first stage. This reduces power consumption for the second stage without causing the area increase associated with self-gating circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.