Computer interface

Details Computer interface Computer interface

G - Physics

06

F

354/236

G06F 13/20 (2006.01) G06F 13/40 (2006.01)

Patent

CA 2007052

COMPUTER INTERFACE ABSTRACT Computer interface apparatus which provides for an efficient computer inter- face that transfers control and data signals using a variety of communications proto- cols between a signal processor and external devices coupled thereto. The interface (11) comprises a plurality of control and data transfer ports, including one serial (120) and four configurable parallel ports (122, 124, 126, 128) A plurality of con- trollers (130, 132) interface with the signal processor to direct the flow of control and data signals between devices. In addition, and in order to increase the speed oper- ation of the interface, circuitry is also disclosed which controls tristate buffers on the control and data busses coupled to the serial and parallel ports (120, 122, 124, 126, 128), which circuitry provide for open-collector characteristics, without sacrificing tristate buffer speed.

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