Invention Grant
- Patent Title: Clock and data recovery circuit
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Application No.: US16261376Application Date: 2019-01-29
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Publication No.: US10541718B2Publication Date: 2020-01-21
- Inventor: Po-Hsiang Lan , Cheng-Hsiang Hsieh
- Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
- Applicant Address: TW Hsin-Chu
- Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee Address: TW Hsin-Chu
- Agency: Duane Morris LLP
- Main IPC: H04L7/02
- IPC: H04L7/02 ; H04B1/7085 ; H04L7/00

Abstract:
Circuits and methods for performing a clock and data recovery are disclosed. In one example, a circuit is disclosed. The circuit includes an FSM. The FSM includes: a first accumulator, a second accumulator, and a third accumulator. The first accumulator is configured to receive an input phase code representing a phase timing difference between a data signal and a clock signal at each FSM cycle, to accumulate input phase codes for different FSM cycles, and to generate a first order phase code at each FSM cycle. The second accumulator is coupled to the first accumulator and configured to accumulate the input phase codes and first order phase codes for different FSM cycles, and to generate a second order phase code at each FSM cycle. The third accumulator is coupled to the second accumulator and configured to accumulate the input phase codes and second order phase codes for different FSM cycles, and to generate a third order phase code at each FSM cycle.
Public/Granted literature
- US20190173516A1 CLOCK AND DATA RECOVERY CIRCUIT Public/Granted day:2019-06-06
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