ARM11 clk management

ARM11 S3C6410片内有三个PLLs,用来做倍频给ARM CPU core, 总线衔接的片内设备等。ARM总线架构(AMBA[advanced microcontroller bus architecture ])中AXI（Advanced eXtensible BUS ）,AHB(Advanced High-performance BUS ) ,APB(Advanced Pheripheral bus ) 各总线需求时钟频率顺次下降，功耗顺次下降。现总结时钟办理根本操作过程，需求设置的寄存器等等。总结如下图所示。