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:
Jan. 03, 2017
Filed:
Dec. 16, 2013
Intel Corporation, Santa Clara, CA (US);
Hongjiang Song, Mesa, AZ (US);
Yan Song, Gilbert, AZ (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
Embodiments include apparatuses, methods, and systems for transmitting a data signal over one or more transmission lines. In one embodiment, a transmitter circuit includes a plurality of programmable impedance driver (PID) circuits coupled in parallel with one another to drive a data signal on a transmission line. The individual PID circuits may include a pull-up transistor to receive a pull-up signal, a pull-down transistor to receive a pull-down signal, and first and second resistors coupled in series with one another between the pull-up and pull-down transistors. An output contact may be coupled to a node between the first and second resistors to pass an output signal that is responsive to the pull-up and pull-down signals. The individual PID circuits may further include a switch transistor coupled in parallel with the first and second resistors, and a control contact coupled to the switch transistor to receive a control signal to switch the switch transistor on or off to control an impedance at the output contact.