Invention Grant
- Patent Title: Multi-wire open-drain link with data symbol transition based clocking
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Application No.: US15156555Application Date: 2016-05-17
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Publication No.: US09673968B2Publication Date: 2017-06-06
- Inventor: Shoichiro Sengoku , Joseph Cheung , George Alan Wiley
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Loza & Loza LLP
- Main IPC: H04L7/00
- IPC: H04L7/00 ; H03K5/13 ; H03K5/1534 ; H04L7/033 ; H03K3/017 ; H03K5/153 ; H03L7/081 ; H03K5/133 ; H03K5/134 ; H03K19/00 ; H03K5/14 ; H03K5/00

Abstract:
A method, an apparatus, and a computer program product are described. The apparatus generates a receive clock signal for receiving data from a multi-wire open-drain link by determining a transition in a signal received from the multi-wire open-drain link, generating a clock pulse responsive to the transition, delaying the clock pulse by a preconfigured first interval if the transition is in a first direction, and delaying the clock by a preconfigured second interval if the transition is in a second direction. The preconfigured first and/or second intervals are configured based on a rise time and/or a fall time associated with the communication interface and may be calibrated by measuring respective delays associated with clock pulses generated for first and second calibration transitions.
Public/Granted literature
- US20160261400A1 MULTI-WIRE OPEN-DRAIN LINK WITH DATA SYMBOL TRANSITION BASED CLOCKING Public/Granted day:2016-09-08
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