公开(公告)号：US20140167866A1

公开(公告)日：2014-06-19

申请号：US13715057

申请日：2012-12-14

Applicant: BROADCOM CORPORATION

Inventor： Praveen VASISHTHA ,  Satyaprasad SRINIVAS

IPC: G01R35/00

CPC classification number: G01R35/005 ,  H03B5/06 ,  H03B5/36 ,  H03B2200/0094 ,  H03L1/025

Abstract: A calibrated crystal warm-up method that can include determining the number of clock cycles of a crystal clock reference signal from a crystal oscillator occur during a single clock cycle of a low-power oscillator. Further, the determination can occur when the crystal oscillator is warmed up. The method can also include comparing a number of clock cycles of the crystal clock reference signal with a previously determined number of clock cycles of the crystal clock reference signal to indicate whether the crystal oscillator is warmed up. Further, the method can include counting the number of clock cycles of a low-power clock reference signal have occurred up until the time it has been determined that the crystal oscillator has been warmed up.

Abstract translation: 可以在低功率振荡器的单个时钟周期期间发生校准的晶体预热方法，其中包括确定晶体振荡器的晶体时钟参考信号的时钟周期数。 此外，当晶体振荡器被加热时，可以发生确定。 该方法还可以包括将晶体时钟参考信号的多个时钟周期与晶体时钟参考信号的预先确定的时钟周期数进行比较，以指示晶体振荡器是否被加热。 此外，该方法可以包括对已经发生的低功率时钟参考信号的时钟周期数进行计数，直到确定晶体振荡器已经被加热为止。