Serial interface between DSP and analog front-end device

Details Serial interface between DSP and analog front-end device Serial interface between DSP and analog front-end device

1996-12-02

1998-05-26

Sheikh, Ayaz R.

39520038, 39520067, 395285, G06F 1342

Patent

active

057580731

ABSTRACT:
A system to transfer a serial digital data protocol between a controlling processor such as digital signal processor and a plurality of analog front-end devices is described. The system has a serial clock unit to generate a serial clock reference signal, a serial data control unit to create the serial data protocol, a serial clock transmission medium, a serial data transmission medium, and an analog front-end control unit. The serial digital data protocol has a start bit time, an address time, a read/write bit time, a first high impedance time, a serial data word time, a second high impedance time, and a stop bit time. A serial data word may be transferred either from the controlling processor to the analog front-end device or from the analog front-end device to the controlling processor dependent on the state at the read write bit time.

REFERENCES:
patent: 4346440 (1982-08-01), Kyu et al.
patent: 4845609 (1989-07-01), Lighthart et al.
patent: 5321819 (1994-06-01), Szczepanek
patent: 5467774 (1995-11-01), Ochs et al.
patent: 5491492 (1996-02-01), Knapp et al.

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