On-chip input/output device having programmable I/O unit being c

Details On-chip input/output device having programmable I/O unit being c On-chip input/output device having programmable I/O unit being c

1997-12-12

1999-10-26

Lee, Thomas C.

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral configuration

710 16, 710104, 714733, 326 30, 326 38, G06F 1314, G01R 313187

Patent

active

059744766

ABSTRACT:
An input/output (I/O) device with programmable I/O characteristics is provided for use on an integrated circuit to serve as a communication interface whose input/output characteristics can be set through programmable means to be matched to the external circuitry to which the IC chip is connected for use. This allows the IC chip on which the I/O device is provided to be matched for use with various kinds of external systems. Further, the I/O device can also be provided with a self-control feature that can detect whether the I/O characteristics of the I/O device are matched to the external circuitry and, if not, automatically set the I/O device to the required I/O characteristic. The I/O device can prevent an IC chip from being discarded due to a mismatch in the I/O characteristics with the external circuitry to which the IC chip is connected for use.

REFERENCES:
patent: 5490254 (1996-02-01), Ziegler et al.
patent: 5502400 (1996-03-01), Livolsi et al.
patent: 5583454 (1996-12-01), Hawkins et al.
patent: 5671234 (1997-09-01), Phillips et al.
Hastie, N.; Cliff, R., "The implementation of hardware subroutines on field programmable gate arrays," Custom Integrated Circuits Conference, 1990, Proceedings of the IEEE 1990, pp. 31.4/1-31.4/4.

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