ARM7 microcontroller (learning) - (KZ), PLL (phase-locked loop)

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After searching for a long time, I still couldn't find the frequency setting for Proteus simulation of LPC2106~~

Also, I still don't understand Startup.s~~

So I don't know how it is set up.

But let's sort out the PLL first~~

PLL (Phase Locked Loop):

ARM7 microcontroller (learning) - (KZ), PLL (phase-locked loop) - 01

Register Description:

ARM7 microcontroller (learning) - (KZ), PLL (phase-locked loop) - 01

a. PLLCON register (PLLCON - 0X301FC080)

ARM7 microcontroller (learning) - (KZ), PLL (phase-locked loop) - 01

b. PLLCFG register (PLLCFG - 0XE01FC084)

ARM7 microcontroller (learning) - (KZ), PLL (phase-locked loop) - 01

c. PLLSTAT register (PLLSTAT—0XE01FC088)

ARM7 microcontroller (learning) - (KZ), PLL (phase-locked loop) - 01
d. PLLFEED register (PLLFEED - 0XE01FC08C)

ARM7 microcontroller (learning) - (KZ), PLL (phase-locked loop) - 01

PLL Interrupt

The PLOCK bit in the PLLSTAT register is connected to the interrupt controller. This allows the PLL to be turned on by software and connected to other functions without waiting for the PLL to lock. When an interrupt occurs, the PLL can be connected and the interrupt can be disabled.

PLL Mode

ARM7 microcontroller (learning) - (KZ), PLL (phase-locked loop) - 01

PLL and Power-down Mode

ARM7 microcontroller (learning) - (KZ), PLL (phase-locked loop) - 01

PLL frequency calculation

ARM7 microcontroller (learning) - (KZ), PLL (phase-locked loop) - 01

Process for Determining PLL Settings

ARM7 microcontroller (learning) - (KZ), PLL (phase-locked loop) - 01

Keywords：ARM7 Reference address：ARM7 microcontroller (learning) - (KZ), PLL (phase-locked loop) - 01

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