Title:
FAULT DETECTION AND SELF-RECOVERY METHOD FOR CRYSTAL OSCILLATOR
Document Type and Number:
WIPO Patent Application WO/2016/119139
Kind Code:
A1
Abstract:
A circuitry (20) for providing an oscillating output signal (CLK) in connection with an integrated circuit chip (200) is provided. The circuitry (20) includes a crystal (CR) off the chip, and an oscillator circuitry on the chip for electrically coupling with the off-chip crystal (CR) and operable to produce the oscillating output signal. The circuitry (20) further includes: a testing circuitry on the chip, for evaluating whether the oscillating output signal is operating within an acceptable range; and an operational recovery circuitry on the chip, for attempting to restore the oscillating signal, in response to the testing circuitry evaluating that the oscillating output signal is not operating within an acceptable range.
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Inventors:
PAN YAOHUA (CN)
BAO LINA (CN)
HE ZHIWEI (CN)
ZHANG JUN (CN)
BAO LINA (CN)
HE ZHIWEI (CN)
ZHANG JUN (CN)
Application Number:
PCT/CN2015/071730
Publication Date:
August 04, 2016
Filing Date:
January 28, 2015
Export Citation:
Assignee:
TEXAS INSTRUMENTS INC (US)
TEXAS INSTRUMENTS JAPAN (JP)
TEXAS INSTRUMENTS JAPAN (JP)
International Classes:
G06F11/07; H03L7/00
Foreign References:
| CN1713527A | 2005-12-28 | |||
| CN101901176A | 2010-12-01 | |||
| CN103296968A | 2013-09-11 | |||
| US7003696B1 | 2006-02-21 | |||
| US4943788A | 1990-07-24 | |||
| US4816776A | 1989-03-28 |
Attorney, Agent or Firm:
JEEKAI & PARTNERS (Jinyu Tower A129A129 West Xuan Wu Men Street, Xicheng District, Beijing 1, CN)
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