Clock frequency divider circuit
US11860685B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2021 |
| Grant date | Jan 2, 2024 |
| Priority date | — |
| Expiry date | Nov 29, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K23/40
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system and method for efficiently generating clock signals are described. In various implementations, an integrated circuit includes multiple clock frequency dividers both at its I/O boundaries and across its die. A clock frequency divider utilizes a first clock divider and a second clock divider that receive input clock signals with an initial phase difference between them. The first clock divider and the second clock divider generate output clock signals that have frequencies that are a fraction of the frequencies of the received input clock signals. The second clock divider uses a combined multiplexer and flip-flop (combined mux-flop) circuit. The combined mux-flop circuit receives a reset signal that is asserted asynchronously with respect to an input clock signal received by the second clock divider. The second clock divider generates an output clock signal that has the initial phase difference with an output clock signal of the first clock divider.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.