Control method and circuit for stopping clock signal

Details Control method and circuit for stopping clock signal Control method and circuit for stopping clock signal

2006-12-12

2006-12-12

Browne, Lynne H. (Department: 2116)

Electrical computers and digital processing systems: support

Clock, pulse, or timing signal generation or analysis

C713S322000

Reexamination Certificate

active

07149912

ABSTRACT:
When controlling a clock to a central processing unit, it is naturally preferable not to change existing circuits which are not related to the control of the clock. A clock control circuit inputs a clock input CLK, and generates a clock output CLKOUT for the central processing unit. In the clock control circuit, CLK is masked by a write operation to an internal register. CLKOUT is stopped by the mask operation. The mask operation is carefully designed to be initiated when the internal cycle of the central processing unit is detected. The resumption of the clock is initiated by interrupts.

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Chinese Office Action in corresponding Chinese Application No. 03106065.X dated Aug. 5, 2005.

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