Pin multiplexing

Details Pin multiplexing Pin multiplexing

2011-06-14

2011-06-14

Kindred, Alford W (Department: 2181)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output access regulation

C710S038000, C710S051000, C710S058000

Reexamination Certificate

active

07962670

ABSTRACT:
A semiconductor device coupled to input/output pins includes a first core to operate a first function and a second core to operate a second function. A multiplexer is arranged to set the input/output pins to the first function or to the second function, and an arbiter is configured to receive requests from the cores to use the input/output pins and to grant use of the input/output pins to a selected core. A register is arranged to store a value indicative of a delay to be applied by the arbiter when granting use of the input/output pins to the second core.

REFERENCES:
patent: 6230263 (2001-05-01), Ryan et al.
patent: 6247088 (2001-06-01), Seo et al.
patent: 7199607 (2007-04-01), Volkening et al.
patent: 2005/0050283 (2005-03-01), Miller et al.
patent: 2006/0132178 (2006-06-01), Volkening et al.
patent: 2007/0220352 (2007-09-01), Hernandez et al.

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