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1. (WO2017039985) MULTIPHASE CLOCK DATA RECOVERY FOR A 3-PHASE INTERFACE

Pub. No.:    WO/2017/039985    International Application No.:    PCT/US2016/046211
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Wed Aug 10 01:59:59 CEST 2016
IPC: H04L 7/033
H04L 25/49
Applicants: QUALCOMM INCORPORATED
Inventors: DUAN, Ying
LEE, Chulkyu
CHOU, Shih-Wei
DANG, Harry
KWON, Ohjoon
Title: MULTIPHASE CLOCK DATA RECOVERY FOR A 3-PHASE INTERFACE
Abstract:
Methods, apparatus, and systems for data communication over a multi-wire, multi-phase interface are disclosed. A method of data communication includes configuring a clock recovery circuit to provide a first clock signal that includes a pulse for each symbol transmitted on the interface, where symbols are transmitted on the interface at a first frequency, adjusting a loop delay of the clock recovery circuit to modify the first clock to have a second frequency that is no more that half the first frequency, where the clock recovery circuit generates a pulse in the first clock signal for a first of an integer number of symbols and suppresses pulse generation for other symbols in the integer number of symbols, configuring a clock generation circuit to provide a second clock signal, and capturing symbols from the interface using the first clock signal and the second clock signal.