Serial bus I/O system and method for serializing interrupt requests and DMA requests in a computer system
US5475854A · kind A · utility
90Cited by
5References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 28, 1994 |
| Grant date | Dec 12, 1995 |
| Priority date | — |
| Expiry date | Jan 28, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/423
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A serial bus Input/Output (I/O) system has multiple I/O devices which are all connected in daisy-chain fashion on a serial bus. These I/O devices service peripherals that may generate different interrupt requests or DMA requests to the system controller. These requests are encoded, serialized and transmitted to the system controller on the serial bus, allowing the system controller to service a large number of interrupt requests and DMA requests via the serial bus with a very small number of external pins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.