Circuit for interfacing a digital signal processor to a serial i

Details Circuit for interfacing a digital signal processor to a serial i Circuit for interfacing a digital signal processor to a serial i

1989-07-17

1991-02-05

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 859, H04J 300

Patent

active

049911708

ABSTRACT:
An interface circuit which connects a Digital-Signal-Processor (DSP) to a serial controller. The interface circuit includes a bi-directional multiplexer which converts the separate address and data busses of the DSP to the multiplexed data and address bus of the serial controller. A timing generator is included for keeping track of the number of clock cycles in the present access. A decoder connected to the timing generator decodes the number of clock cycles and generates the appropriate control signals to both the serial controller and the DSP.

REFERENCES:
patent: 4754274 (1988-06-01), Iles
Money, Steve A., Microprocessor data book, 1982, pp. 129, 130.
Motorola Inc., MC68008, Nov. 1982, p. 1--1.

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