Data processing system for writing an external device and method therefor
US5860129A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1995 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Sep 27, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/1689
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data processing system (10) provides flexibility in interfacing with both a variety of memory devices (56, 58) and external peripheral devices (58). A control register (94) is provided for dynamically controlling a timing relationship between read and write accesses executed by the data processing system. A first set of bits (WP) stored in the control register determines an amount of time a write enable signal is asserted to indicate a length of time required to write a data value to an external device. By recognizing the difference in the timing requirements for read and write operations among different external peripheral devices and memories, as well as the difference in the timing requirements of read and write operations on the same external device, the first set of bits of the control register uses the best timing scheme available to increase the efficiency of the data processing system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.