发明申请
US20120235721A1 DIGITAL LOCKED LOOPS AND METHODS WITH CONFIGURABLE OPERATING PARAMETERS
有权
数字锁定机身和方法与可配置的操作参数
- 专利标题: DIGITAL LOCKED LOOPS AND METHODS WITH CONFIGURABLE OPERATING PARAMETERS
- 专利标题(中): 数字锁定机身和方法与可配置的操作参数
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申请号: US13484240申请日: 2012-05-30
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公开(公告)号: US20120235721A1公开(公告)日: 2012-09-20
- 发明人: Eric Booth , George G. Carey , Brian Callaway
- 申请人: Eric Booth , George G. Carey , Brian Callaway
- 申请人地址: US ID Boise
- 专利权人: Micron Technology, Inc.
- 当前专利权人: Micron Technology, Inc.
- 当前专利权人地址: US ID Boise
- 主分类号: H03L7/08
- IPC分类号: H03L7/08
摘要:
A locked loop may have an adjustable hysteresis and/or a tracking speed that can be programmed by a user of an electronic device containing the locked loop or controlled by an integrated circuit device containing the locked loop during operation of the device. The looked loop may include a phase detector having a variable hysteresis, which may be coupled to receive a reference clock signal and an output clock signal from a phase adjustment circuit through respective frequency dividers that can vary the rate at which the phase detector compares the phase of the output clock signal to the phase of the reference clock signal, thus varying the tracking speed of the loop. The hysteresis and tracking speed of the locked loop may be programmed using a variety of means, such as by a temperature sensor for the electronic device, a mode register, a memory device command decoder, etc.