Title:
IMPEDANCE CALIBRATION CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2024/021191
Kind Code:
A1
Abstract:
Provided in the present disclosure is an impedance calibration circuit, comprising: a calibration module, which is used for receiving a first calibration clock signal, performing impedance calibration on the basis of the first calibration clock signal, and outputting a first stop signal when the calibration is completed; a first detection module, which is used for detecting a calibration time of the impedance calibration circuit, and outputting a second stop signal when the calibration time reaches a preset value; and a calibration control module, which is used for receiving the first stop signal and the second stop signal, and outputting the first calibration clock signal, wherein upon receiving the first stop signal or the second stop signal, the calibration control module stops outputting the first calibration clock signal. In addition to stopping to output the first calibration clock signal according to the first stop signal, the calibration control module also stops outputting the first calibration clock signal according to the second stop signal, such that the impedance calibration circuit can stop calibration in a timely manner, thereby meeting the design requirement, effectively reducing power consumption, and improving the reliability of the impedance calibration circuit.
Inventors:
SHAO YANIAN (CN)
ZHANG ZHIQIANG (CN)
ZHANG ZHIQIANG (CN)
Application Number:
PCT/CN2022/112658
Publication Date:
February 01, 2024
Filing Date:
August 16, 2022
Export Citation:
Assignee:
CHANGXIN MEMORY TECH INC (CN)
International Classes:
H03M1/10
Foreign References:
| CN109660254A | 2019-04-19 | |||
| CN114420187A | 2022-04-29 | |||
| CN109873641A | 2019-06-11 | |||
| CN214205481U | 2021-09-14 | |||
| CN1499798A | 2004-05-26 | |||
| US20090289659A1 | 2009-11-26 |
Attorney, Agent or Firm:
SHANGHAI WINSUN INTELLECTUAL PROPERTY AGENCY (CN)
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