Configurable clock network for programmable logic device

Details Configurable clock network for programmable logic device Configurable clock network for programmable logic device

2010-11-22

2011-12-06

Cox, Cassandra (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Integrated structure

C327S297000

Reexamination Certificate

active

08072260

ABSTRACT:
In a programmable logic device having high-speed serial interface channels, a clock distribution network for providing one or more high-speed clocks to dynamic phase alignment circuitry of those high-speed serial interfaces includes at least one bus that is segmentable (e.g. using tristatable buffers). This allows the bus to be divided into different portions that can be connected to different clock sources when the high-speed serial interfaces are running at different speeds. In one embodiment, the segmenting elements (e.g., the aforementioned buffers) are located between selected channels (e.g., every fourth channel), limiting the size of the different segments. In another embodiment, segmenting elements are located between each channel, allowing complete user freedom in selecting the sizes of the segments. Thus, instead of providing a bus for every clock source, multiple clocks can be made available to different channels by segmenting a single bus.

REFERENCES:
patent: 3473160 (1969-10-01), Wahlstrom
patent: 3997874 (1976-12-01), Kelly et al.
patent: 4494021 (1985-01-01), Bell et al.
patent: 4542509 (1985-09-01), Buchanan et al.
patent: 4633488 (1986-12-01), Shaw
patent: 4658152 (1987-04-01), Walters
patent: 4719593 (1988-01-01), Threewitt et al.
patent: 4857866 (1989-08-01), Tateishi
patent: 4868522 (1989-09-01), Popat et al.
patent: 4959646 (1990-09-01), Podkowa et al.
patent: 5072195 (1991-12-01), Graham et al.
patent: 5075575 (1991-12-01), Shizukuishi et al.
patent: 5079519 (1992-01-01), Ashby et al.
patent: 5121014 (1992-06-01), Huang
patent: 5133064 (1992-07-01), Hotta et al.
patent: 5204555 (1993-04-01), Graham et al.
patent: 5208557 (1993-05-01), Kersh
patent: 5239213 (1993-08-01), Norman et al.
patent: 5349544 (1994-09-01), Wright et al.
patent: 5394116 (1995-02-01), Kasturia
patent: 5397943 (1995-03-01), West et al.
patent: 5418499 (1995-05-01), Nakao
patent: 5420544 (1995-05-01), Ishibashi
patent: 5424687 (1995-06-01), Fukuda
patent: 5448191 (1995-09-01), Meyer
patent: 5477182 (1995-12-01), Huizer
patent: 5506878 (1996-04-01), Chiang
patent: 5535240 (1996-07-01), Carney et al.
patent: 5542083 (1996-07-01), Hotta et al.
patent: 5581214 (1996-12-01), Iga
patent: 5586307 (1996-12-01), Wong et al.
patent: 5629651 (1997-05-01), Mizuni
patent: 5642082 (1997-06-01), Jefferson
patent: 5646564 (1997-07-01), Erickson et al.
patent: 5656959 (1997-08-01), Chang et al.
patent: 5691669 (1997-11-01), Tsai et al.
patent: 5699020 (1997-12-01), Jefferson
patent: 5742180 (1998-04-01), DeHon et al.
patent: 5744991 (1998-04-01), Jefferson et al.
patent: RE35797 (1998-05-01), Graham et al.
patent: 5777360 (1998-07-01), Rostoker et al.
patent: 5815016 (1998-09-01), Erickson
patent: 5847617 (1998-12-01), Reddy et al.
patent: 5852728 (1998-12-01), Matsuda et al.
patent: 5889436 (1999-03-01), Yeung et al.
patent: 5900757 (1999-05-01), Aggarwal et al.
patent: 5952891 (1999-09-01), Boudry
patent: 5963069 (1999-10-01), Jefferson et al.
patent: 5970110 (1999-10-01), Li
patent: 5974105 (1999-10-01), Wang et al.
patent: 5987543 (1999-11-01), Smith
patent: 5999025 (1999-12-01), New
patent: 6014048 (2000-01-01), Talaga, Jr. et al.
patent: 6020931 (2000-02-01), Bilbrey et al.
patent: 6043677 (2000-03-01), Albu et al.
patent: 6058117 (2000-05-01), Ennamarato et al.
patent: 6069506 (2000-05-01), Miller
patent: 6069507 (2000-05-01), Shen et al.
patent: 6072348 (2000-06-01), New et al.
patent: 6081022 (2000-06-01), Mitra et al.
patent: 6104222 (2000-08-01), Embree
patent: 6107946 (2000-08-01), Jeong
patent: 6114915 (2000-09-01), Huang et al.
patent: 6125217 (2000-09-01), Paniccia et al.
patent: 6125421 (2000-09-01), Roy
patent: 6127865 (2000-10-01), Jefferson
patent: 6141394 (2000-10-01), Linebarger et al.
patent: 6144224 (2000-11-01), Lee et al.
patent: 6144242 (2000-11-01), Jeong et al.
patent: 6144675 (2000-11-01), Wakabayashi et al.
patent: 6157266 (2000-12-01), Tsai et al.
patent: 6188699 (2001-02-01), Lang et al.
patent: 6195758 (2001-02-01), Lundh et al.
patent: 6229861 (2001-05-01), Young
patent: 6249189 (2001-06-01), Wu et al.
patent: 6252419 (2001-06-01), Sung et al.
patent: 6278332 (2001-08-01), Nelson et al.
patent: 6311313 (2001-10-01), Camporese et al.
patent: 6320469 (2001-11-01), Friedberg et al.
patent: 6326812 (2001-12-01), Jefferson
patent: 6359483 (2002-03-01), Watkins et al.
patent: 6369624 (2002-04-01), Wang et al.
patent: 6373278 (2002-04-01), Sung et al.
patent: 6411150 (2002-06-01), Williams
patent: 6462623 (2002-10-01), Horan et al.
patent: 6463547 (2002-10-01), Bailey et al.
patent: 6483886 (2002-11-01), Sung et al.
patent: 6504415 (2003-01-01), Robinson et al.
patent: 6650161 (2003-11-01), Thomas et al.
patent: 6690195 (2004-02-01), Ngai et al.
patent: 6730540 (2004-05-01), Siniaguine
patent: 6836877 (2004-12-01), Dupenloup
patent: 6862548 (2005-03-01), Chan
patent: 6924678 (2005-08-01), Starr
patent: 7075365 (2006-07-01), Starr et al.
patent: 7242229 (2007-07-01), Starr et al.
patent: 7286007 (2007-10-01), Starr et al.
patent: 7304507 (2007-12-01), Tran et al.
patent: 7646237 (2010-01-01), Starr et al.
patent: 7859329 (2010-12-01), Starr et al.
patent: 2001/0033188 (2001-10-01), Aung et al.
patent: 2005/0080580 (2005-04-01), Kantake
patent: 2007/0018863 (2007-01-01), Hoang et al.
patent: 0 266 065 (1988-05-01), None
patent: 0 416 930 (1991-03-01), None
patent: 0 501 652 (1992-09-01), None
patent: 0 657 797 (1995-06-01), None
patent: 0 778 517 (1997-06-01), None
patent: 0 903 660 (1999-03-01), None
patent: 0 987 822 (2000-03-01), None
patent: 1 056 207 (2000-11-01), None
patent: 0 657 797 (2003-07-01), None
patent: 1-137646 (1989-05-01), None
patent: 10215156 (1998-08-01), None
patent: WO 91/10951 (1991-07-01), None
Advanced Micro Devices, Inc., “Am2971 Programmable Event Generator (PEG),” Publication No. 05280, Rev. C, Amendment /0, pp. 4-286-4-303 (Jul. 1986).
Advanced Micro Devices, Inc., “AmPAL*23S8 20-Pin IMOX PAL-Based Sequencer,” Publication No. 06207, Rev. B, Amendment /0, pp. 4-102-4-121 (Oct. 1986).
Agere Systems, Inc., “ORCA ORT82G5 0.622/1.0-1.25/2.0-2.5/3.125 Gbits/s Backplane Interface FPSC,” Preliminary Data Sheet, pp. 1-35 (Jul. 2001).
Agere Systems, Inc., “ORCA 8850 Field-Programmable System Chip (FPSC) Eight Channel ×850 Mbits/s Backplane Transceiver,” Product Brief, pp. 1-6 (Jul. 2001).
Agere Systems, Inc., “ORCA 8850 Field-Programmable System Chip (FPSC) Eight Channel ×850 Mbits/s Backplane Transceiver,” Product Brief, pp. 1-36 (Aug. 2001).
Avrionova, K., “Applications and Performance of PTN1111 and PTN2111 Clock Distribution Devices,” Application Note AN259, Philips Semiconductors, Oct. 16, 2001, pp. 1-6.
Blair, G.M., “Self Generating Clock Using an Augmented Distribution Network,” IEE Proc. Circuits Devices Syst., vol. 144, No. 4, Aug. 1997, pp. 219-222.
Chen, Y., et al., “The Associative-Skew Clock Routing Problem,” 1999 IEEE/ACM International Conference on Computer-Aided Design; Digest of Technical Papers, Nov. 7-11, 1999, pp. 168-172.
Debaes, C., et al., “Receiver-Less Optical Clock Injection for Clock Distribution Networks,” IEEE Journal of Selected Topics in Quantum Electronics, vol. 9, No. 2, Mar./Apr. 2003, pp. 400-409.
DynaChip Corp., “Application Note: Using Phase Locked Loops in DL6035 Devices” (1998).
DynaChip Corp., DY6000 Family Datasheet (Dec. 1998).
Friedman, E.G., “Clock Distribution Networks in Synchronous Digital Integrated Circuits,” Proceedings of the IEEE, vol. 89, No. 5, May 2001, pp. 665-692.
Katrai, C., “Managing Clock Distribution and Optimizing Clock Skew in Networking Applications,” Application Note 14, Pericom Semiconductor Corporation, San Jose, California, Dec. 29, 1998, pp. 71-78.
Ko, U., et al., “A 30-ps Jitter, 3.6 μs Locking, 3.3-Volt Digital PLL for CMOS Gate Arrays,” Proceedings of the IEEE 1993 Custom Integrated Circuits Conference, Publication No. 0-7803-0826-3/93, pp. 23.3.1-23.3.4 (May 9-12, 1993).
LSI Logic Corp., 500

Affiliated with

Also associated with

Rating

Configurable clock network for programmable logic device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Configurable clock network for programmable logic device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Configurable clock network for programmable logic device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4310819