Method and apparatus for providing both power and control by way

Details Method and apparatus for providing both power and control by way Method and apparatus for providing both power and control by way

1992-02-28

1996-07-09

Kriess, Kevin A.

395550, G06F 116, G06F 108

Patent

active

055353983

ABSTRACT:
A method and apparatus for providing both power and control by way of an integrated circuit terminal (22). In one form, a clock source (12) supplies a periodic signal to a phase lock loop circuit (32) and to a multiplexer (34). The output of the phase lock loop circuit (32) is a second input to the multiplexer (34). The phase lock loop circuit (32) receives its power from a power and control pin (22). The multiplexer (34) receives its power from a power pin (24). The power and control pin (22) is used as a control input to multiplexer (34). Multiplexer (34) uses the power and control pin (22) to select which input to output as a system clock.

REFERENCES:
patent: 4893271 (1990-01-01), Davis et al.
patent: 4931748 (1990-06-01), McDermott
patent: 5133064 (1992-07-01), Hotta et al.
patent: 5134703 (1992-07-01), Bumbarger
patent: 5155841 (1992-10-01), Bumbarger
Terry Lawell, "Integrated Pass-Through Logic", Jan. 1982, Motorola Technical Developments vol. 2, p. 15.

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