Signal transmitting device, circuit block and integrated circuit

Details Signal transmitting device, circuit block and integrated circuit Signal transmitting device, circuit block and integrated circuit

1996-12-24

1998-10-06

Westin, Edward

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Bus or line termination

326 86, H03K 1716, H03K 190175

Patent

active

058182535

ABSTRACT:
A signal transmitting circuit includes one or more circuit blocks having a driving circuit and an intra-block transmission line for transmitting a signal produced by the driving circuit, one or more circuit blocks having a receiving circuit and an intra-block transmission line for transmitting the signal to said receiving circuit, and a main interblock transmission line for propagating a signal between both of the driving and receiving circuit blocks. Inter-block transmission line is terminated at one or two ends by one or two resistors having substantially the same impedance as the interblock transmission line itself. Each of the intra-block transmission line is provided with a resistance element having a resistance equal to or close to a value derived by subtracting a half of an impedance of the inter-block transmission line from an impedance of the intra-block transmission line, to lower signal amplitude and suppress reflections of a signal at branch points along the main interblock transmission line, thereby enabling a high-speed signal transfer.

REFERENCES:
patent: 3694665 (1972-09-01), Belluche
patent: 3710282 (1973-01-01), Seinecke
patent: 3832575 (1974-08-01), Dasgupta et al.
patent: 4922449 (1990-05-01), Donaldson et al.
patent: 4987318 (1991-01-01), Burke et al.
patent: 5003467 (1991-03-01), Donaldson et al.
patent: 5019728 (1991-05-01), Sanwo et al.
patent: 5046072 (1991-09-01), Shimizu et al.
patent: 5227677 (1993-07-01), Furman
"New I/O Proposal", Fujitsu, JEDEC JC16, San Diego, Dec. 5, 1993, pp. 1-12.

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