Modable dynamic terminator for high speed digital...

Details Modable dynamic terminator for high speed digital... Modable dynamic terminator for high speed digital...

2005-06-14

2005-06-14

Chang, Daniel D. (Department: 2819)

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Bus or line termination

C326S086000

Reexamination Certificate

active

06906550

ABSTRACT:
A terminator circuit for use on a pin of an integrated circuit (IC) is disclosed. A preferred embodiment of the present invention includes a clamp circuit that turns on when the voltage at the pin exceeds a threshold value (either an upper or lower bound). Logic and biasing circuitry are used to allow multiple modes of operation by adjusting the threshold values. A particular mode may be selected at any given time so as to strike an appropriate balance between signal quality and power consumption with respect to a particular terminator or set of terminators. This prevents excessive power consumption due to terminator circuitry at inactive or infrequently active IC pins.

REFERENCES:
patent: 6359465 (2002-03-01), Hui
patent: 6501293 (2002-12-01), Braceras et al.

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