ASIC cell implementation of a bus controller with programmable timing value registers for the apple desktop bus
US5828857A · kind A · utility
4Cited by
5References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 5, 1996 |
| Grant date | Oct 27, 1998 |
| Priority date | — |
| Expiry date | Jan 5, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/124
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An ASIC (Application Specific Integrated Circuit) cell implementation of an ADB (Apple Desktop Bus) bus controller with programmable timing value registers for the Apple Desktop Bus (ADB) has a system interface for connecting to a computer system including an address bus interface, a data bus interface, and a control bus interface, and has an ADB interface for connecting to an ADB peripheral bus. A control state machine within the ADB bus controller uses timing data from the programmable timing value registers to implement the Apple Desktop Bus data signaling and communications protocol on the ADB interface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.