Rotational synchronizer circuit for metastablity resolution
US9509317B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2013 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Jul 7, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/05
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A rotational synchronizer for metastability resolution is disclosed. A synchronizer includes a plurality of M+1 latches each coupled to receive data through a common data input. The synchronizer further includes a multiplexer having a N inputs each coupled to receive data from an output of a corresponding one of the M+1 latches, and an output, wherein the multiplexer is configured to select one of its inputs to be coupled to the output. A control circuit is configured to cause the multiplexer to sequentially select outputs of the M+1 latches responsive to N successive clock pulses, and further configured to cause the M+1 latches to sequentially latch data received through the common data input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.