Digital IC-microcomputer interface

Details Digital IC-microcomputer interface Digital IC-microcomputer interface

1984-06-28

1990-11-27

Shaw, Gareth D.

Boots, shoes, and leggings

3649269, 3649328, 3649393, 3649235, G06F 1314

Patent

active

049741993

ABSTRACT:
In a communication and control system, an improved interface between a digital IC and its associated microcomputer is provided wherein a serial shift register in the digital IC is used to store the message bits of a received message and control of the shift register is transferred to the associated microcomputer as soon as the interface is set up so that data stored in the register is not overwritten by another received message. A busy signal is also supplied over one line of the interface only during periods when the digital IC is actually receiving or transmitting a message.

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