Asynchronous serial data transmission apparatus with edge interr

Details Asynchronous serial data transmission apparatus with edge interr Asynchronous serial data transmission apparatus with edge interr

1996-07-29

1998-11-17

Chin, Stephen

Pulse or digital communications

Synchronizers

Frequency or phase control using synchronizing signal

375295, 375377, 375219, H04L 2538

Patent

active

058387471

ABSTRACT:
In a serial data transmission apparatus connected to a data transmission bus, an edge detector detects an edge in a signal at the data transmission bus. An edge interrupt operation is carried out to operate a timer in response to the edge. The edge interrupt operation is stopped when the timer is being operated. A timer interrupt operation carries out a fetching operation of a bit data on the data transmission bus in a receiving mode or a transmitting operation of a bit data to the data transmission bus in a transmitting mode, in response to the timer means whose content reaches a predetermined value.

REFERENCES:
patent: 5450450 (1995-09-01), Lee
patent: 5581556 (1996-12-01), Ohie
patent: 5631925 (1997-05-01), Koenzen
Ronald L. Mitchel "A Small Area Network for Cars" SAE Technical Papers, No. 840317, Feb. 1994, pp. 177-184.

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