Invention Grant
- Patent Title: C-PHY half-rate clock and data recovery adaptive edge tracking
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Application No.: US15348290Application Date: 2016-11-10
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Publication No.: US10033519B2Publication Date: 2018-07-24
- Inventor: Ying Duan , Yasser Ahmed , Abhay Dixit , Harry Huy Dang , Jing Wu
- 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: H04L29/06
- IPC: H04L29/06 ; H04L7/00

Abstract:
Methods, apparatus, and systems for data communication over a multi-wire, multi-phase interface are disclosed. A method for calibrating a clock recovery circuit includes recovering a first clock signal from transitions between pairs of symbols representative of successive signaling states of a 3-wire interface, where each pair of symbols includes a first symbol and a second symbol, generating a second clock signal by delaying the first clock signal by a first delay value, generating a third clock signal by delaying the second clock signal, calibrating the second clock signal and the third clock signal by initializing the first delay value such that the first sampling circuit, the second sampling circuit and the third sampling circuit capture the same symbol in a first pair of symbols, and incrementally increasing the first delay value until the second sampling circuit and the third sampling circuit capture different symbols from each pair of symbols.
Public/Granted literature
- US20180131503A1 C-PHY HALF-RATE CLOCK AND DATA RECOVERY ADAPTIVE EDGE TRACKING Public/Granted day:2018-05-10
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