Invention Grant
US08488686B2 Communication channel calibration with nonvolatile parameter store for recovery
有权
通信通道校准与非易失性参数存储进行恢复
- Patent Title: Communication channel calibration with nonvolatile parameter store for recovery
- Patent Title (中): 通信通道校准与非易失性参数存储进行恢复
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Application No.: US13152170Application Date: 2011-06-02
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Publication No.: US08488686B2Publication Date: 2013-07-16
- Inventor: Philip Yeung , Richard E Perego , Scott C Best
- Applicant: Philip Yeung , Richard E Perego , Scott C Best
- Applicant Address: US CA Sunnyvale
- Assignee: Rambus Inc.
- Current Assignee: Rambus Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Haynes Beffel & Wolfeld LLP
- Main IPC: H04L27/00
- IPC: H04L27/00

Abstract:
A communication channel is operated by storing a calibrated parameter value in nonvolatile memory during manufacturing, testing, or during a first operation of the device. Upon starting operation of the communication channel in the field, the calibrated parameter value is obtained from the nonvolatile memory, and used in applying an operating parameter of the communication channel. After applying the operating parameter, communication is initiated on a communication channel. The operating parameter can be adjusted to account for drift immediately after starting up, or periodically. The process of starting operation in the field includes power up events after a power management operation. In embodiments where one component includes memory, steps can be taken prior to a power management operation using the communication channel, such as transferring calibration patterns to be used in calibration procedures.
Public/Granted literature
- US20110235727A1 COMMUNICATION CHANNEL CALIBRATION WITH NONVOLATILE PARAMETER STORE FOR RECOVERY Public/Granted day:2011-09-29
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