Common input/output terminal control circuit

Details Common input/output terminal control circuit Common input/output terminal control circuit

2006-07-21

2008-11-25

Tan, Vibol (Department: 2819)

Electronic digital logic circuitry

Interface

Current driving

Reexamination Certificate

active

07456657

ABSTRACT:
A first data selection circuit selects a data signal among a plurality of data signals from a plurality of circuits, a first direction selection circuit selects a direction control signal of the same circuit among a plurality of direction control signals from these circuits. A data holding circuit and a direction holding circuit respectively hold the selected data signal and direction control signal. A second data selection circuit selects a data signal from the first data selection circuit or the data holding circuit. A second direction selection circuit selects the direction control signal from the first direction selection circuit or the direction holding circuit. An output circuit outputs, to a common input/output terminal, the data signal from the second data selection circuit in accordance with the direction control signal from the second direction selection circuit.

REFERENCES:
patent: 6636070 (2003-10-01), Altaf
patent: 2004-192051 (2004-07-01), None
patent: 20-1996-0037487 (1996-10-01), None
patent: 10-1998-002333 (1998-01-01), None
patent: 10-2001-7012511 (2000-10-01), None

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