发明名称 Apparatus for synchronously selecting different oscillators as system clock source
摘要 An apparatus is provided for synchronously selecting different oscillators as the system clock source. The apparatus is comprised of two oscillator selectors. Each of the oscillator selectors has as its inputs the output of each of the oscillators and a three-bit command code which indicates which of the oscillators is to be selected by the oscillator selector and a single clock output. A different oscillator may be selected by each of the oscillator selectors at the same time. The output of the oscillator selectors are inputs to the clock controller. The clock controller also receives command signals for controlling the switching of the clock controller between the outputs of the two oscillator selectors. The output of the clock controller is the clock source for the system and a status signal indicating which oscillator selector is presently being used.
申请公布号 US5289138(A) 申请公布日期 1994.02.22
申请号 US19920922209 申请日期 1992.07.30
申请人 AMDAHL CORPORTION 发明人 WANG, EUGENE
分类号 G06F1/08;H04L7/00;(IPC1-7):H03B27/00;H01J19/82;H04B1/10 主分类号 G06F1/08
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