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# PLL Macros
[PLL driver Module]

Collaboration diagram for PLL Macros:

These functions allow to control the PLL. More...

## Defines
#define | PLLx06 ( (0<<PLLP2) | (0<<PLLP1) | (0<<PLLP0) )
#define | PLLx03 ( (0<<PLLP2) | (0<<PLLP1) | (1<<PLLP0) )
#define | Start_pll(clockfactor) (PLLCSR = ( clockfactor | (1<<PLLE) ))
| Start the PLL at only 48 MHz, regarding CPU frequency Start the USB PLL with clockfactor clockfactor can be PLLx24, PLLx12, PLLx08 PLLx06, PLLx04, PLLx03.
#define | Is_pll_ready() (PLLCSR & (1<<PLOCK) )
| return 1 when PLL locked
#define | Wait_pll_ready() while (!(PLLCSR & (1<<PLOCK)))
| Test PLL lock bit and wait until lock is set.
#define | Stop_pll() (PLLCSR &= (~(1<<PLLE)) )
| Stop the PLL.

## Detailed Description

These functions allow to control the PLL.

## Define Documentation

#define PLLx06 ( (0<<PLLP2) | (0<<PLLP1) | (0<<PLLP0) )

Definition at line 28 of file pll_drv.h.

#define PLLx03 ( (0<<PLLP2) | (0<<PLLP1) | (1<<PLLP0) )

Definition at line 29 of file pll_drv.h.

#define Start_pll | ( | clockfactor |  | ) | (PLLCSR = ( clockfactor | (1<<PLLE) ))

Start the PLL at only 48 MHz, regarding CPU frequency Start the USB PLL with clockfactor clockfactor can be PLLx24, PLLx12, PLLx08 PLLx06, PLLx04, PLLx03.

Definition at line 36 of file pll_drv.h.

#define Is_pll_ready | ( |  | ) | (PLLCSR & (1<<PLOCK) )

return 1 when PLL locked

Definition at line 40 of file pll_drv.h.

#define Wait_pll_ready | ( |  | ) | while (!(PLLCSR & (1<<PLOCK)))

Test PLL lock bit and wait until lock is set.

Definition at line 43 of file pll_drv.h.

Referenced by usb_start_device().

#define Stop_pll | ( |  | ) | (PLLCSR &= (~(1<<PLLE)) )

Stop the PLL.

Definition at line 46 of file pll_drv.h.

Referenced by usb_device_task().