PLL Macros
[PLL driver]

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) ))
#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)),PLLCSR=0 )
 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 58 of file pll_drv.h.

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

Definition at line 59 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 66 of file pll_drv.h.

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

return 1 when PLL locked

Definition at line 70 of file pll_drv.h.

Referenced by usb_general_interrupt(), and usb_generate_remote_wakeup().

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

Test PLL lock bit and wait until lock is set.

Definition at line 73 of file pll_drv.h.

Referenced by usb_general_interrupt(), usb_generate_remote_wakeup(), and usb_start_device().

 
#define Stop_pll (  )     (PLLCSR &= (~(1<<PLLE)),PLLCSR=0 )

Stop the PLL.

Definition at line 76 of file pll_drv.h.

Referenced by usb_device_task(), and usb_general_interrupt().


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