Clock recovery circuit

Details Clock recovery circuit Clock recovery circuit

1997-10-24

1999-12-14

Nuton, My-Trang

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

327163, H03L 700

Patent

active

060022795

ABSTRACT:
A clock recovery circuit that can be used for recovering a clock signal from a data stream having a high data rate. The clock recovery circuit has a phase interpolator and non-linear digital to analog converters. These circuits are used to interpolate between the phases produced by a voltage controlled oscillator. A determination to advance or hinder a currently selected phase can be made using an up/down detector, a divider, and control logic. The divider can divide not only the up and down pulses produced by the up/down detector, but also the clock frequency. By dividing the clock frequency, the control logic can be designed using CMOS logic circuits.

REFERENCES:
patent: 4373181 (1983-02-01), Chisholm et al.
patent: 4684831 (1987-08-01), Kruest
patent: 4787082 (1988-11-01), Delaney et al.
patent: 4797635 (1989-01-01), Hatcher
patent: 5382921 (1995-01-01), Estrada et al.
patent: 5448598 (1995-09-01), Yousefi et al.
patent: 5485113 (1996-01-01), Ito et al.
patent: 5485490 (1996-01-01), Leung et al.
patent: 5533072 (1996-07-01), Georgiou et al.
patent: 5548280 (1996-08-01), Pearce
patent: 5550860 (1996-08-01), Georgiou et al.
patent: 5578939 (1996-11-01), Beers et al.
patent: 5587675 (1996-12-01), Schmitt
patent: 5592629 (1997-01-01), Gamble
patent: 5598443 (1997-01-01), Poeppleman
patent: 5623518 (1997-04-01), Pfiffner
patent: 5633899 (1997-05-01), Fielder et al.
patent: 5638028 (1997-06-01), Voth
patent: 5818304 (1998-10-01), Hogeboom
patent: 5844436 (1998-12-01), Altmann
Jurgens, C.; "Fibre Channel: A connection to the future," Computer, vol. 28, Aug. 1995; available at http://www.computer.org/pubs/computer/hotopics/08/hotopics.htm.
Nelson, C.; "Fiber Channel offers speed, interoperability," Communications Design, Part 4; available at http://techweb.cmp.com/eet
ick/comdesign/fibercha.html.
"Fiber Channel Components," Electronics Components, Hewlett Packard; available at http://hpcc920.external.hp.com/HP-COMP/3.0/3.3.t.5.6.html.
"Fibre Channel Products," AMCC, available at http://www.amcc.com/product-guide/fibrechannel/fibre.html.
"CERN Fibre Channel homepage," available at http://www.cern.ch/HSI/fcs/fcs.html.
"Fibre Channel Systems Initiative (FCSI)," Mar. 13, 1995, available at http://www.amdahl.com/ext/CARP/FCA/FCSI.html.
"Fibre Channel Association," May 23, 1997, Available at http://amdahl.com/ext/CARP/FCA./FCA.html.
Meggyesi, Z.; "Fibre Channel Overview," available at http://www1.cern.ch/HSI/fcs/spec/overview.htm.
Shafir, H.; "Gigabit networking technologies converge," Communications Design, Part 4; available at http://techweb.cmp.com/ee
ick/comdesign/gigabitn.html.
Computer and Communication Standards, available at http://www.cmpcmm.com/cc/standards.html.
Fibre Channel Manufacturers, available at http://www.cern.ch/HSI/fcs/manufac/manufac.htm.
FC-0/FC-1 Chips, available at http://www.cern.ch/HSI/fcs/comps/fc0.sub.-- 1.htm.
VLSI Technology, Inc. Product Bulletin, Aug. 1995.
Vitesse Semiconductor Corporation, draft of "Advance Product Information VSC7120 for 1.0625 Gbit/Sec Fibre Channel Repeater Circuit," Oct. 19, 1995.
Applied Micro Circuits Corporation, Preliminary Device Specification for Fibre Channel and Gigabit Ethernet Transceiver S2053, Feb. 3, 1998.
Applied Micro Circuits Corporation, Preliminary Device Specification for Fibre Channel and Gigabit Ethernet Transceiver S2054, Feb. 3, 1998.
Gore Creative Technologies "Cooper Gigabaud Link Module FCN 7181, " Jun. 3, 1997, available at http.//222./amdahl.com/ext/CARP/FCA/products/Gore/CuGLM.htm.
Fibre Channel White Paper, available at http://www.unisys.com/marketplace/aseries/techlib/whpapers/fibchan.htm.
Global Engineering, "Fibre Channel; Physical and Signaling Interface (FC-PH)," working draft proposed American National Standard for Information Systems, Jun. 1, 1994.

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