Electrical computers and digital processing systems: support – Clock control of data processing system – component – or data...
Reexamination Certificate
2006-08-01
2006-08-01
Lee, Thomas (Department: 2115)
Electrical computers and digital processing systems: support
Clock control of data processing system, component, or data...
C713S320000, C607S002000
Reexamination Certificate
active
07085952
ABSTRACT:
A system for writing data efficiently between a fast clock domain and a slow clock domain. In one embodiment, a processor that performs firmware routines is clocked by a fast clock that is turned on when a prescribed event occurs to operate in the fast clock domain in conjunction with hardware that performs certain device operations that is clocked by a slow clock that is always on to operate in a slow clock domain. Writing data from the processor to the hardware involves determining if a bit is to be written to a register of the slow clock domain in synchrony with a transition of the slow clock, stopping the fast clock to pause operation of the processor, writing the bit to the register of the slow clock domain upon a succeeding slow clock transition, and starting the fast clock to resume operation of the processor.
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Stotts, Introduction to Implantable Biomedical IC Design, 1989, IEEE, pp. 12-18.
Girma Wolde-Michael
Lee Thomas
Medtronic Inc.
Soldner Michael C.
Suryawanshi Suresh K
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