Serial I/O multichannel semiconductor device capable of selectin

Details Serial I/O multichannel semiconductor device capable of selectin Serial I/O multichannel semiconductor device capable of selectin

1998-06-05

2000-05-30

Lee, Thomas C.

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus access regulation

710 36, 710 38, 710100, 710131, 708139, 708168, 709232, 709238, 712225, G06F 1338, G06F 1300, G06F 1314, G06F 300, G06F 900

Patent

active

060702168

ABSTRACT:
A serial I/O incorporated semiconductor device comprises a transmitting unit 4 including a transmission channel selection register 14 for selecting a transmitting pin to output transmit data and a receiving unit 5 including a receiving channel detection circuit 26 for detecting receiving pins that have received data; a receiving channel flag 27 set to have a predetermined value by the receiving channel detection circuit; a plural channels reception detection circuit 28 for detecting that received data is entered to a plurality of receiving pins; and a plural channels receiving flag 29 set to have a predetermined value by the plural channels reception detection circuit 28 detecting received data has been entered to the plurality of receiving pins; wherein when any one of the flags 23, 25, and 29 is set to a predetermined value, the receiving unit supplies the value to a CPU as a reception interrupt signal.

REFERENCES:
patent: 4967326 (1990-10-01), May
patent: 5701515 (1997-12-01), Gradeler
patent: 5761463 (1998-06-01), Allen
patent: 5818426 (1998-10-01), Tierney et al.
patent: 5842032 (1998-11-01), Bertsch
patent: 5920708 (1999-07-01), Gates et al.

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