Multi-lane receiver de-skewing

Details Multi-lane receiver de-skewing Multi-lane receiver de-skewing

2005-12-10

2009-08-04

Phan, Man (Department: 2419)

Multiplex communications

Communication techniques for information carried in plural...

Adaptive

C370S411000, C370S503000, C370S508000, C375S369000, C375S371000

Reexamination Certificate

active

07570659

ABSTRACT:
A technique for de-skewing a group of serial data signals respectively outputted from a group of data lanes includes simultaneously feeding a test signal to inputs of the group of data lanes and monitoring respective outputs thereof. A predetermined data element of the test signal outputted from each of the group of data lanes is respectively detected and respective elapsed times from the detection of the predetermined data element outputted from each of the group of data lanes to the detection that the predetermined data element has been outputted from all of the group of data lanes are measured. The group of serial data signals are then de-skewed by respectively delaying them in accordance with their respective measured elapsed times. The test signal may include the predetermined data element, a lane identifier, and a predetermined number of additional data symbols, the predetermined data element being a predetermined data character. The elapsed times may be measured by a group of lane tolerance counters, each counter initiating counting upon the detection of the predetermined data element in its data lane and each counter stopping counting upon the detection that the predetermined data element has been outputted from all of the group of data lanes. The group of serial data signals may be respectively delayed by a group of registers and the amount of delay of each data signal may be selected by a respective multiplexer connected to the group of registers, each multiplexer being controlled by its respective counter.

REFERENCES:
patent: 5313501 (1994-05-01), Thacker
patent: 5467464 (1995-11-01), Oprescu et al.
patent: 5486783 (1996-01-01), Baumert et al.
patent: 5719862 (1998-02-01), Lee et al.
patent: 5774697 (1998-06-01), Hall
patent: 6031847 (2000-02-01), Collins et al.
patent: 6044121 (2000-03-01), Nolan et al.
patent: 6536025 (2003-03-01), Kennedy et al.
patent: 6553505 (2003-04-01), Brown et al.
patent: 6625675 (2003-09-01), Mann
patent: 6654824 (2003-11-01), Vila et al.
patent: 6658363 (2003-12-01), Mejia et al.
patent: 6687844 (2004-02-01), Zhang
patent: 6874097 (2005-03-01), Aliahmad et al.
patent: 7036037 (2006-04-01), Paul et al.
patent: 7225354 (2007-05-01), Tseng
patent: 7260736 (2007-08-01), Zhang
patent: 7289587 (2007-10-01), Rentschler et al.
patent: 7340635 (2008-03-01), Radjassamy
patent: 7359407 (2008-04-01), Mattos et al.
Dan Alderrou et al., “XAUI/XGXS Proposal,” presentation at the IEEE 802.3ae Task Force Interim Meeting, May 23-25, 2000, 28 pages.
Joel H. Dedrick, “New Sources of Lane to Lane Skew, and a Proposal for Alignment,” presentation at the IEEE 802.3 HSSG Study Group Meeting, Jan. 18, 2000, 9 pages.

Affiliated with

Also associated with

Rating

Multi-lane receiver de-skewing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-lane receiver de-skewing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-lane receiver de-skewing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4102019