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发明授权
CN1842070B 具有多级的定时恢复电路 失效 - 权利终止 转让

具有多级的定时恢复电路
摘要：
一种定时恢复电路，包括：第一振荡电路，其被配置用来产生第一定时信号；第二振荡电路，其被配置用来产生第二定时信号；第一抽取电路，其耦合到第一时钟信号的供应节点和第一振荡电路，以产生通过响应于第一定时信号抽取第一时钟信号的脉冲而获得的第二时钟信号；以及第二抽取电路，其耦合到第一抽取电路和第二振荡电路，以产生通过响应于第二定时信号抽取第二时钟信号的脉冲而获得的第三时钟信号，其中第一定时信号和第二定时信号中的一个具有固定周期，而另外一个具有响应于反馈控制的周期。
摘要（英）：

A timing recovery circuit includes a first oscillating circuit configured to produce a first timing signal, a second oscillating circuit configured to produce a second timing signal, a first decimation circuit coupled to a supply node of a first clock signal and to the first oscillating circuit to produce a second clock signal made by decimating pulses of the first clock signal in response to thefirst timing signal, and a second decimation circuit coupled to the first decimation circuit and to the second oscillating circuit to produce a third clock signal made by decimating pulses of the second clock signal in response to the second timing signal, wherein one of the first timing signal and the second timing signal has a fixed cycle, and another one has a cycle responsive to feedback control.

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