公开(公告)号：US09628088B2

公开(公告)日：2017-04-18

申请号：US14463658

申请日：2014-08-19

Applicant: Texas Instruments Incorporated

Inventor： Danielle Griffith ,  Viral Parikh ,  Ryan Smith ,  Per Torstein Roine

IPC: H04B1/40 ,  H03L7/02

CPC classification number: H03L7/02 ,  H04B1/40

Abstract: Digital control of a crystal oscillator is implemented in a manner that allows frequency accuracy to be traded off dynamically with power consumption. The oscillator transitions between a less accurate/lower power mode and a high accuracy/higher power mode smoothly without requiring any external clock source during the transition. Power consumption is optimized because the crystal oscillator provides the clock source during transitions between the power modes and no other clock source is needed for these transitions. The system can also optimize the startup time and steady state power consumption independently.

公开(公告)号：US20150056934A1

公开(公告)日：2015-02-26

申请号：US14463658

申请日：2014-08-19

Applicant: Texas Instruments Incorporated

Inventor： Danielle Griffith ,  Viral Parikh ,  Ryan Smith ,  Per Torstein Roine

IPC: H03L7/02 ,  H04B1/40

CPC classification number: H03L7/02 ,  H04B1/40

Abstract: Digital control of a crystal oscillator is implemented in a manner that allows frequency accuracy to be traded off dynamically with power consumption. The oscillator transitions between a less accurate/lower power mode and a high accuracy/higher power mode smoothly without requiring any external clock source during the transition. Power consumption is optimized because the crystal oscillator provides the clock source during transitions between the power modes and no other clock source is needed for these transitions. The system can also optimize the startup time and steady state power consumption independently.

Abstract translation: 晶体振荡器的数字控制以允许频率精度被动态地消耗功率的方式来实现。 振荡器在不太准确/较低功耗模式和高精度/高功率模式之间平滑转换，而不需要任何外部时钟源。 功耗被优化，因为晶体振荡器在功率模式之间的转换期间提供时钟源，并且这些转换不需要其他时钟源。 该系统还可以独立优化启动时间和稳态功耗。