Universal asynchronous receive/transmit circuit with flow control
US5619544A · kind A · utility
35Cited by
4References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1996 |
| Grant date | Apr 8, 1997 |
| Priority date | — |
| Expiry date | Feb 27, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/385
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for a circuit physically realizing a Universal Asynchronous Receive/Transmit (UART) circuit 31, 40 having an automatic flow control feature. A preferred embodiment includes a UART 31 provided with additional control circuitry 39, 34 for automatically pausing transfers from the transmit data circuitry 35, 32 in response to a transition at the CTS (Clear to Send) input, and further provided with control circuitry 39 for automatically asserting and deasserting a RTS (Ready to Send) output when a receiver data threshold is reached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.