Elastic interface de-skew mechanism

Details Elastic interface de-skew mechanism Elastic interface de-skew mechanism

2005-02-11

2008-12-02

Connolly, Mark (Department: 2115)

Electrical computers and digital processing systems: support

Clock control of data processing system, component, or data...

C713S400000, C713S401000, C713S503000

Reexamination Certificate

active

07461287

ABSTRACT:
A mechanism for de-skewing and aligning data bits sent between two chips on an elastic interface. On the receiving end of an elastic interface, the eye of each data bit within a clock/data group is delayed by less than a bit time to align the eyes with the nearest clock edge of a received clock signal. In addition to aligning the eyes of the individual data bits with the nearest clock edge, IAP patterns are used to determine the amount of further delay needed to line up the individual data beats from each data bit. If the data beats for the data bits are not aligned, all but the slowest data beat are delayed to align the data beats for all bits. The additional delay is achieved using sample latches that result in a delayed signal with less jitter. As a result of having less jitter, the received, de-skewed, and aligned clock/data group can be forwarded to the operative portion of the receiving chip at an increased frequency.

REFERENCES:
patent: 5287025 (1994-02-01), Nishimichi
patent: 5467464 (1995-11-01), Oprescu et al.
patent: 5546355 (1996-08-01), Raatz et al.
patent: 6247138 (2001-06-01), Tamura et al.
patent: 6553503 (2003-04-01), Li
patent: 6654897 (2003-11-01), Dreps et al.
patent: 6766464 (2004-07-01), Collier
patent: 7036037 (2006-04-01), Paul et al.
patent: 2003/0074609 (2003-04-01), Koyanagi et al.
patent: 2003/0217302 (2003-11-01), Chen et al.
patent: 2006/0053328 (2006-03-01), Panikkar et al.
patent: 2006/0129869 (2006-06-01), Hendrickson et al.

Affiliated with

Also associated with

Rating

Elastic interface de-skew mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Elastic interface de-skew mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Elastic interface de-skew mechanism will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4022400