Apparatus and method for reliably clocking a signal with arbitrary phase
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United States of America Patent
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Mar 28, 1995
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N/A
app pub date -
Jan 21, 1994
filing date -
Jan 21, 1994
priority date (Note) -
Expired
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Abstract
A clocking circuit and method for phasing a signal with an unknown phase to a clock signal includes a time requirement duration (TRD) signal which has two states and the duration of one of the states is indicative of a combined setup and hold time requirement for the storage device intended to capture the unknown phase signal. The TRD signal is then clocked as a function of the unknown phase signal and called a toggle clock phase (TCP) signal. The TCP signal is then used to modify the phase of a clock enable for the storage device signal to ensure adequate setup and hold time for the clocking of the unknown phase signal.
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