关于System PLL的问题!

[yangweihuadiand]

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！

[jimmychan]

Sorry, the Table 8-4 is a bit confused.

In this table 8-4, the "System PLL" is the ARM PLL , the "528MHz PLL" is the System PLL which mentioned in Chapter 18.5.1.3 PLL reference clock.