Invention Grant
- Patent Title: Method and system using driver equalization in transmission line channels with power or ground terminations
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Application No.: US15061957Application Date: 2016-03-04
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Publication No.: US09722822B1Publication Date: 2017-08-01
- Inventor: Liang Leon Zhang , Friedel Gerfers , Carl Pobanz , Myoung Joon Choi , Vivek Gurumoorthy , Chienhsin Lee
- Applicant: INPHI CORPORATION
- Applicant Address: US CA Santa Clara
- Assignee: INPHI CORPORATION
- Current Assignee: INPHI CORPORATION
- Current Assignee Address: US CA Santa Clara
- Agency: Ogawa P.C.
- Agent Richard T. Ogawa
- Main IPC: H04K1/02
- IPC: H04K1/02 ; H04L25/03 ; H04L25/49

Abstract:
A driver circuit device using driver equalization in power and ground terminated transmission line channels. The driver circuit device can include a weaker pull-up driver, which is needed to pre-emphasize the pull-up signal for driver equalization in power terminated transmission line channels. The driver circuit device can also include a weaker pull-down driver, which is needed to pre-emphasize the pull-down signal for driver equalization in ground terminated transmission line channels. In the transmission line channels with power terminations, a weaker pull-up Ron is implemented. In the transmission line channels with ground terminations, a weaker pull-down Ron is implemented. Drivers implemented in power and/or ground terminated transmission line channels can be used to improve device performance, such as in signal eye opening.
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