pll_drv.h File Reference

This file contains the low level macros and definition for the USB PLL. More...

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Macros
#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

This file contains the low level macros and definition for the USB PLL.

Application note:

AVR280: USB Host CDC Demonstration

Documentation

For comprehensive code documentation, supported compilers, compiler settings and supported devices see readme.html

Author

Atmel Corporation: http://www.atmel.com
Support email: avr@a.nosp@m.tmel.nosp@m..com

Name:

Revision:

1.1

RCSfile:

pll_drv.h,v

Date:

2008/10/14 20:16:36

Id:

pll_drv.h,v 1.1 2008/10/14 20:16:36 c_oflynn Exp

Definition in file pll_drv.h.