Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Frequency or repetition rate conversion or control
Reexamination Certificate
2006-05-16
2006-05-16
Lam, Tuan T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Frequency or repetition rate conversion or control
C327S117000, C377S047000, C377S048000
Reexamination Certificate
active
07046052
ABSTRACT:
A phase matched clock divider includes a first feed-through flip-flop that receives a first input clock signal, and in response, provides a first output clock signal having the same frequency. The first feed-through flip-flop is enabled and disabled in response to a first reset signal. A plurality of series-connected flip-flops each receives the first input clock signal, and in response, provides a divided output clock signal. Each of the series-connected flip-flops is enabled and disabled in response to a second reset signal. The first and second release signals asynchronously disable the associated flip-flops in response to a third reset signal. The first release signal synchronously enables the first feed-through flip-flop in response to the third reset signal and a release clock signal. The second release signal enables the series-connected flip-flops in response to the third reset signal and a release control signal.
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Pang Raymond C.
Percey Andrew K.
Hoffman E. Eric
Lam Tuan T.
Liu Justin
Ward Thomas A.
Xilinx , Inc.
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