Electronic digital logic circuitry – Clocking or synchronizing of logic stages or gates
Patent
1996-06-19
1998-06-02
Westin, Edward P.
Electronic digital logic circuitry
Clocking or synchronizing of logic stages or gates
327298, 327164, 327212, 327291, H03K 1900
Patent
active
057606099
ABSTRACT:
A clock signal providing circuit with enable and pulse generator with enable for use in a block clock circuit of a programmable logic device (PLD), the block clock circuit for allocating multiple clock signals to each macrocell of the PLD. The clock signal providing circuit includes circuitry which functions to change states in response to a pin clock signal when an enable signal is active, and to maintain its current state when the enable signal is inactive. The pulse generator includes circuitry which functions to provide a pulse at a first edge of a pin clock signal if an enable signal remains active from prior to receipt of the first edge of the pin clock signal.
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Advanced Micro Devices , Inc.
Roseen Richard
Westin Edward P.
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