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关于System PLL的问题!

Question asked by 杨卫华 杨 on Sep 1, 2016
Latest reply on Sep 17, 2016 by jimmychan

关于System PLL的问题!

在IMX6DQRM Rev. 3中部分章节对System PLL为:

PLL2 (also referred tp as System_PLL or 528_PLL)

即PLL2又称为System PLL。

Chapter 18 Clock Controller Module (CCM)对System PLL有专门的描述:

PLL2 also referenced as System PLL

但在Chapter 8 System Boot 一章中的8.4.3 Clocks at Boot Time 

Table 8-4. Normal Frequency Clocks Configuration

 

上表中,显然System PLL来自pll1,为ARM Core  clock的前级时钟(ARM Core固定2分频前的时钟)

这就让我很疑惑System PLL到底为何?

谢谢!

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