Crossbar switch with distributed memory

Details Crossbar switch with distributed memory Crossbar switch with distributed memory

1988-12-22

1990-11-27

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

34082579, 34082585, 34082589, 34082591, 379292, H04Q 100

Patent

active

049739565

ABSTRACT:
A crossbar switch is constructed in monolithic integrated circuit form together with respective memory cells controlling each of the component crosspoint switches in the crossbar switch. The memory cells permit control signals for the crosspoint switches to be supplied serially to the monolithic integrated circuit and thus permit those control signals to be supplied in coded form as orthogonal cross addressing for the memory cells. This reduces the number of bits which must be provided in parallel to the integrated circuit for controlling the crosspoint switches. In preferred embodiments of the crossbar switch, provision is made for operation as a corner-turn array for rotating bit matrices and for faster operation as a barrel shifter.

REFERENCES:
patent: 4785299 (1988-11-01), Trumpp
patent: 4807184 (1989-02-01), Shelor
"A Dynamically Reconfigurable Interconnection Chip" CY Chin. W-T Lin, J-P Hwang, S. Chu, G. Forman, R. Dunki-Jacobs, S. Karr J. Mallick, H. T. Kung, A. Sussman, F. H. Hsu, T. Nishizawa, ISSCC 87-Friday, Feb. 27, 1987, General Corp. Res. & Dev. Schenectady, NY-pp. 276-277 & 425.

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