Self-timed clocking transfer control circuit
US5373204A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1993 |
| Grant date | Dec 13, 1994 |
| Priority date | — |
| Expiry date | Aug 31, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C7/22
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A self-timed clocking transfer control circuit includes a flipflop for storing a transition of a transfer request signal to an L level and outputting an H level signal, an inverter for applying a transfer acknowledge signal to a preceding stage, a 5-input NAND gate, and a second signal output circuit for applying a transfer request signal to a succeeding stage in response to a transition of the output of the 5-input NAND gate to the L level. The 5-input NAND gate does not output the L level unless the transfer request signal from the preceding stage, the output of the flipflop, the transfer acknowledge signal from the succeeding stage, the transfer request signal output by the self-timed clocking transfer control circuit itself, and the prohibition signal are all in the H level. Setting the prohibition signal to the L level, self-synchronous type transfer control can be prohibited. A circuit for generating such a prohibition signal based on a signal for setting an operational mode, a clock signal, and the transfer request signal from the preceding stage may additionally be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.