Line precharging circuits and methods
US5159210A · kind A · utility
12Cited by
3References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1991 |
| Grant date | Oct 27, 1992 |
| Priority date | — |
| Expiry date | Sep 27, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/0963
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A bus precharge circuit is provided that precharges a bus line or node as an inverse function of the precharge level already attained on the bus line, such that the precharge level on the bus line is gradually approached. The precharge circuit charges the bus line to a midpoint between high and low logic states. The preexisting state of the bus line is stored and is used to select one of two voltage supplies to which the bus line may be partially pulled up or down. The switchpoint of a precharge circuit sensing gate is set to be equivalent to the switchpoint of the receiving gate of receiver on the bus line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.