Method and apparatus for interfacing circuits that operate based upon different clock signals
US6321342A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1999 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Mar 23, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/08
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of interfacing a third circuit with a first circuit that operates based upon a first clock signal and a second circuit that operates based upon a second clock signal includes the step of applying the first clock signal and the second clock signal to a clock selector for the third circuit. The method further includes the step of transferring first data signals between the third circuit and the first circuit at a first rate based upon the first clock signal. Another step of the method includes causing the clock selector to apply the first clock signal to the third circuit prior to the step of transferring the first data signals between the third circuit and the first circuit. Yet another step of the method includes transferring second data signals between the third circuit and the second circuit at a second rate based upon the second clock signal. Furthermore, the method includes causing the clock selector to apply the second clock signal to the third circuit prior to the step of transferring the second data signals between the third circuit and the second circuit. Various apparatus for implementing the method are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.