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Title:
PRE-EMPHASIS TECHNIQUE FOR ON-CHIP VOLTAGE-DRIVEN SINGLE-ENDED-TERMINATION DRIVERS
Document Type and Number:
Japanese Patent JP2015062296
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a transmitter configured for pre-emphasis.SOLUTION: A transmitter 308 includes: a non-current mode logic voltage-driven single-ended-termination driver circuit 324 that includes a first termination point and a second termination point; a pre-emphasis encoder circuit 320 that receives a pre-emphasis signal. The transmitter 308 includes additional current supplied to the transmission lines to compensate for losses in the transmission lines due to high frequencies by detecting a transition in a data stream, adjusting a source determination resistance and obtaining a gain from the adjusted source determination resistance.

Inventors:
FARES K MAAROUF
Application Number:
JP2014224719A
Publication Date:
April 02, 2015
Filing Date:
November 04, 2014
Export Citation:
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Assignee:
QUALCOMM INC
International Classes:
H04L25/03; H03K5/125; H03K19/0175; H04B3/04
Domestic Patent References:
JP2002094365A2002-03-29
JP2004228613A2004-08-12
JP2009503985A2009-01-29
JP2005217999A2005-08-11
JP2007036848A2007-02-08
JP2010056620A2010-03-11
JP2004350273A2004-12-09
Foreign References:
US20040145394A12004-07-29
US20090179682A12009-07-16
US20040179624A12004-09-16
Attorney, Agent or Firm:
Kurata Masatoshi
Yoshihiro Fukuhara
Morisezo Iseki



 
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