uc3b0_b1/pll.h File Reference

Chip-specific PLL definitions.

Copyright (c) 2010-2018 Microchip Technology Inc. and its subsidiaries.

#include <osc.h>
#include <avr32/io.h>
#include <stdbool.h>
#include <stdint.h>

Data Structures
struct	pll_config
	Hardware-specific representation of PLL configuration. More...

Macros
#define	PLL_TIMEOUT_MS   div_ceil(1000 * (PLL_MAX_STARTUP_CYCLES * 2), OSC_SLOW_MIN_HZ)
	Number of milliseconds to wait for PLL lock. More...
Chip-specific PLL characteristics
#define	PLL_MAX_STARTUP_CYCLES   ((1 << AVR32_PM_PLL0_PLLCOUNT_SIZE) - 1)
	Maximum PLL startup time in number of slow clock cycles. More...
#define	NR_PLLS   2
	Number of on-chip PLLs. More...
#define	PLL_MIN_HZ   40000000
	Minimum frequency that the PLL can generate. More...
#define	PLL_MAX_HZ   240000000
	Maximum frequency that the PLL can generate. More...
Chip-specific PLL options
#define	PLL_OPT_VCO_RANGE_LOW   0
	VCO frequency range is 80-180 MHz (160-240 MHz if unset). More...
#define	PLL_OPT_OUTPUT_DIV   1
	Divide output frequency by two. More...
#define	PLL_OPT_WBM_DISABLE   2
	Disable wide-bandwidth mode. More...
#define	PLL_NR_OPTIONS   AVR32_PM_PLL0_PLLOPT_SIZE
	Number of PLL option bits. More...
#define	PLL_VCO_LOW_THRESHOLD
	The threshold under which to set the PLL_OPT_VCO_RANGE_LOW option. More...

Enumerations
enum	pll_source {   PLL_SRC_OSC0 = 0,   PLL_SRC_OSC1 = 1,   PLL_NR_SOURCES }
	PLL clock source. More...

Functions
Interaction with the PLL hardware
static void	pll_enable (const struct pll_config *cfg, unsigned int pll_id)
	Activate the configuration cfg and enable PLL pll_id. More...
static void	pll_disable (unsigned int pll_id)
	Disable the PLL identified by pll_id. More...
static bool	pll_is_locked (unsigned int pll_id)
	Determine whether the PLL is locked or not. More...
static void	pll_enable_source (enum pll_source src)
	Enable the source of the pll. More...
static void	pll_enable_config_defaults (unsigned int pll_id)
	Enable the pll with the default configuration. More...

PLL configuration
#define	pll_get_default_rate(pll_id)
	Get the default rate in Hz of pll_id. More...
#define	pll_config_defaults(cfg, pll_id)
	Initialize PLL configuration using default parameters. More...
static void	pll_config_set_option (struct pll_config *cfg, unsigned int option)
	Set the PLL option bit option in the configuration cfg. More...
static void	pll_config_clear_option (struct pll_config *cfg, unsigned int option)
	Clear the PLL option bit option in the configuration cfg. More...
static void	pll_config_init (struct pll_config *cfg, enum pll_source src, unsigned int div, unsigned int mul)
	The PLL options PLL_OPT_VCO_RANGE_LOW and PLL_OPT_OUTPUT_DIV will be set automatically based on the calculated target frequency. More...
static void	pll_config_read (struct pll_config *cfg, unsigned int pll_id)
	Read the currently active configuration of pll_id. More...
static void	pll_config_write (const struct pll_config *cfg, unsigned int pll_id)
	Activate the configuration cfg on pll_id. More...