Circuit for aligning input signals

Details Circuit for aligning input signals Circuit for aligning input signals

2010-06-11

2011-11-15

Ismail, Shawki S (Department: 2819)

Electronic digital logic circuitry

Multifunctional or programmable

Sequential or with flip-flop

C326S082000, C713S400000

Reexamination Certificate

active

08058902

ABSTRACT:
A circuit for aligning input signals includes a clock generating circuit (CGC) responsive to first signal and second signal to generate a clock signal. A first flip flop and a second flip flop, coupled to the CGC, are responsive to first type of edge of the clock signal to output the first signal and the second signal. A finite state machine (FSM), coupled to the CGC, the first flip flop and the second flip flop, is responsive to second type of edge of the clock signal to detect early arrival of one of the first signal and the second signal with respect to each other, and to generate first control signal and second control signal. A first programmable delay element and a second programmable delay element, coupled to the FSM, delays first input signal based on the first control signal and second input signal based on the second control signal.

REFERENCES:
patent: 5926053 (1999-07-01), McDermott et al.
patent: 6404248 (2002-06-01), Yoneda
patent: 6507230 (2003-01-01), Milton
patent: 6509762 (2003-01-01), Moss et al.
patent: 7157948 (2007-01-01), McClannahan et al.
patent: 2001/0021953 (2001-09-01), Nakashima
patent: 2008/0187080 (2008-08-01), Lee et al.

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