System for dual use of an I/O circuit

Details System for dual use of an I/O circuit System for dual use of an I/O circuit

2008-10-01

2010-06-01

Shin, Christopher B (Department: 2181)

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral configuration

C710S316000, C710S240000

Reexamination Certificate

active

07730228

ABSTRACT:
A system provides dual use of a general purpose input/output (I/O) line. In an embodiment, the system comprises a controlling circuit having a dual purpose I/O line that is selectively operable in a serial transmit mode or an I/O mode. A first circuit that receives a serial data stream when the controlling circuit operates in the serial transmit mode is coupled to the I/O line. A second circuit that generates and transmits a signal when the controlling circuit operates in the I/O mode is also coupled to the I/O line. Finally, a third circuit is disposed between the second circuit and the I/O line. In an embodiment, when the controlling circuit operates in the serial transmit mode, the third circuit maintains the second circuit in an idle state, and when the controlling circuit operates in the I/O mode, the third circuit permits the second circuit to transmit the signal to the controlling circuit.

REFERENCES:
patent: 6076142 (2000-06-01), Corrington et al.
patent: 6259532 (2001-07-01), Yaple et al.
patent: 6847335 (2005-01-01), Chang et al.
patent: 6961797 (2005-11-01), Yu et al.
patent: 7451245 (2008-11-01), Purwin et al.
patent: 2003/0154331 (2003-08-01), Bader et al.
patent: 2004/0039873 (2004-02-01), Lin
patent: 2005/0210171 (2005-09-01), Tanaka et al.
patent: 2006/0114177 (2006-06-01), Purwin et al.
“DS2411: Silicon Serial No. with VccInput,” http://pdfserv.maxim-ic.com/en/ds/DS2411, Dallas Semiconductor: Maxim, last updated Dec. 21, 2006, 11 pages.

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