Transition signal control unit and DMA controller and...

Electrical computers and digital processing systems: support – Clock control of data processing system – component – or data...

Reexamination Certificate

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C713S375000, C713S400000, C713S500000, C326S093000, C326S098000, C326S104000, C327S334000, C327S365000, C710S022000, C710S308000

Reexamination Certificate

active

07073087

ABSTRACT:
Transition signal control for creating asynchronous timing is provided using a transition signal control circuit, which includes Muller C elements each with an inverter. The control device is constituted by a machine ring including n-stages of transition signal control circuits, a state ring including k-stages of transition signal control circuits, and a synchronous circuit for synchronizing with the machine ring by receiving a vector which is output from the state ring. When the output vector of the state ring is received, the synchronous circuit outputs a vector to the machine ring. The output vector of the machine ring and the output vector of the state ring create timings for controlling the processor, for example, asynchronously, and these timings are input to the instruction decoder, for example.

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