Mechanism for windaging of a double rate driver
US7734944B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2006 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Nov 10, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/12
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A double data rate launch system and method in which the two-to-one multiplexer select signal delay is programmable and can be adjusted individually for each system. This allows the amount of delay to be minimized based on the actual set up time required, not the worst-case set-up time. The select signal to the multiplexer is delayed sufficiently to compensate for non-uniformity of duty cycle of data at the inputs to the multiplexer. Compensation of the non-uniformity allows the data on the wire to have a uniform duty cycle for all data transferred regardless of which latch is sourcing the data. The multiplexer that selects data from the two latches which are launching data on the edge of different clocks has a select line that is delayed by a variable amount to tune the select such that the data is clean at the input to the multiplexer on all ports.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.