Clock generator with skew control

Details Clock generator with skew control Clock generator with skew control

2005-04-26

2005-04-26

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S291000, C327S296000

Reexamination Certificate

active

06885227

ABSTRACT:
Systems and methods are disclosed to provide clock generation. In accordance with one embodiment, a clock generator chip is provided that is configurable and in-system programmable and includes a flexible skew control architecture. The clock generator chip may also provide programmable input circuits, programmable output circuits, and permit a JTAG boundary scan.

REFERENCES:
patent: 6028488 (2000-02-01), Landman et al.
patent: 6279077 (2001-08-01), Nasserbakht et al.
patent: 6622208 (2003-09-01), North
patent: 6661254 (2003-12-01), Agrawal et al.
patent: 6687320 (2004-02-01), Chiu et al.
U.S. Appl. No. 10/629,223 entitled “Clock Generator” filed on Jul. 29, 2003.
3.3V Programmable Skew PLL Clock Driver Turboclock, IDT5V991A, Commercial and Industrial Temperature Ranges, Sep. 2001.
One-PLL General Purpose Flash-Programmable Clock Generator, CY22050, Cypress Semiconductor Corporation, San Jose, CA, Revised Dec. 14, 2002.
ICS541, PLL Clock Divider, Revision 021303, Integrated Circuit Systems, Inc.
User Programmable Laser Engine Pixel Clock Generator, ICS1574B, Aug. 31, 2000.
EEPROM Programmable 3-PLL Clock Generator IC, FS6370-01, AMI Semiconductor.

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