Patent
1996-07-01
1998-08-25
Heckler, Thomas M.
395872, 395881, G06F 112, G06F 506
Patent
active
057991758
ABSTRACT:
An information transfer system transfers information, in the form of at least one digital data word, from an source operating in a first clock signal domain defined by a first clock signal, to a destination operating in a second clock signal domain defined by a second clock signal. The information transfer system includes a buffer, a buffer storage element, a buffer retrieval element and a synchronizer. The buffer storage element stores the data word in the buffer under control of a data word present indication, and the buffer retrieval element retrieves the data word from the buffer under control of the second clock signal and a synchronized data word present indication. The synchronizer generates the synchronized data word present indication in response to the first clock signal, the second clock signal, and the data word present indication, thereby to synchronize the data word present indication from the first clock signal domain into the second clock signal domain.
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Cassiday Daniel R.
Satterfield David L.
Heckler Thomas M.
Jordan Richard A.
Sun Microsystems Inc.
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