The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 06, 2000
Filed:
Aug. 11, 1997
Nazar S Haider, Fremont, CA (US);
Srinivasan Rajagopalan, Palo Alto, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A circuit for driving GTL-type buses actively drives a bus trace towards a first reference voltage when a signal in a first voltage state is detected at its input and actively drives the bus trace towards a second reference voltage for a selected period when the signal at its input transitions from the first voltage state to a second voltage state. The circuit includes a flip-flop for storing the sequential voltage states of the signal, logic for comparing the current voltage state of the signal with a replica of the preceding voltage state of the signal, and first and second transistors of complementary conductivity types, for driving the bus trace to first or second reference voltages, respectively, when activated. The first transistor is turned on when the signal is in the first voltage state. The second transistor is turned on for a period determined by the clock signal driving the flip flop, the type of flip-flop, and, optionally, additional logic gates, when the signal transitions from the first voltage state to the second voltage state.