Invention Grant
- Patent Title: Small loop delay clock and data recovery block for high-speed next generation C-PHY
-
Application No.: US17001801Application Date: 2020-08-25
-
Publication No.: US11095425B2Publication Date: 2021-08-17
- Inventor: Ying Duan , Jing Wu , Shih-Wei Chou
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Chui-kiu Teresa Wong
- Main IPC: H04B3/00
- IPC: H04B3/00 ; H04L25/00 ; H04L7/00

Abstract:
Methods, apparatus, and systems for communication over a multi-wire, multi-phase interface are disclosed. A clock recovery method includes generating a combination signal that includes transition pulses, each transition pulse being generated responsive to a transition in a difference signal representative of a difference in signaling state of a pair of wires in a three-wire bus. The combination signal is provided to a logic circuit that is configured to provide a clock signal as its output, where pulses in the combination signal cause the clock signal to be driven to a first state. The logic circuit receives a reset signal that is derived from the clock signal by delaying transitions to the first state while passing transitions from the first state without added delay. The clock signal is driven from the first state after passing a transition of the clock signal to the first state.
Public/Granted literature
- US20210126765A1 SMALL LOOP DELAY CLOCK AND DATA RECOVERY BLOCK FOR HIGH-SPEED NEXT GENERATION C-PHY Public/Granted day:2021-04-29
Information query