Bi-directional adaptive clocking circuit supporting a wide frequency range
US11139805B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2019 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Jul 9, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2005/00058
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A two-way adaptive clock circuit supporting a wide frequency range is composed of a phase clock generating module, a phase clock selecting module, an adaptive clock stretching or compressing amount regulating circuit module and a control module. The adaptive clock stretching or compressing amount regulating circuit module can monitor delay information of a critical path in a chip in real time and feed the information back into the control module. After receiving a clock stretching or compressing enable signal and a stretching or compressing scale signal, the control module selects a target phase clock from clocks generated by the phase clock generating module to rapidly regulate an adaptive clock in a current cycle. The present invention is applied to an adaptive voltage frequency regulating circuit based on on-line time sequence monitoring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.