| Xmega Application Note | |||||
Chip-specific oscillator management functions. More...
#include <board.h>#include <stdbool.h>#include <stdint.h>#include <avr32/io.h>
Go to the source code of this file.
Defines | |
OSC32 mode values | |
| #define | OSC32_MODE_EXTERNAL AVR32_PM_OSCCTRL32_MODE_EXT_CLOCK |
| External clock connected to XIN32. | |
| #define | OSC32_MODE_XTAL AVR32_PM_OSCCTRL32_MODE_CRYSTAL |
| Crystal connected to XIN32/XOUT32. Use automatic gain control. | |
OSC32 startup values | |
| #define | OSC32_STARTUP_0 AVR32_PM_OSCCTRL32_STARTUP_0_RCOSC |
| 0 cycles | |
| #define | OSC32_STARTUP_128 AVR32_PM_OSCCTRL32_STARTUP_128_RCOSC |
| 128 cycles (1.1 ms) | |
| #define | OSC32_STARTUP_131072 AVR32_PM_OSCCTRL32_STARTUP_131072_RCOSC |
| 131072 cycles (1.1 s) | |
| #define | OSC32_STARTUP_16384 AVR32_PM_OSCCTRL32_STARTUP_16384_RCOSC |
| 16384 cycles (143 ms) | |
| #define | OSC32_STARTUP_262144 AVR32_PM_OSCCTRL32_STARTUP_262144_RCOSC |
| 262144 cycles (2.3 s) | |
| #define | OSC32_STARTUP_524288 AVR32_PM_OSCCTRL32_STARTUP_524288_RCOSC |
| 524288 cycles (4.6 s) | |
| #define | OSC32_STARTUP_65536 AVR32_PM_OSCCTRL32_STARTUP_65536_RCOSC |
| 65536 cycles (570 ms) | |
| #define | OSC32_STARTUP_8192 AVR32_PM_OSCCTRL32_STARTUP_8192_RCOSC |
| 8192 cycles (72.3 ms) | |
Oscillator identifiers | |
| #define | OSC_ID_OSC0 0 |
| External Oscillator 0. | |
| #define | OSC_ID_OSC1 1 |
| External Oscillator 1. | |
| #define | OSC_ID_OSC32 2 |
| External 32 kHz oscillator. | |
OSC0/OSC1 mode values | |
| #define | OSC_MODE_EXTERNAL AVR32_PM_MODE_EXT_CLOCK |
| External clock connected to XIN. | |
| #define | OSC_MODE_XTAL_G0 AVR32_PM_MODE_CRYSTAL_G0 |
| Crystal connected to XIN/XOUT. Use oscillator gain G0 (400 kHz to 900 kHz). | |
| #define | OSC_MODE_XTAL_G1 AVR32_PM_MODE_CRYSTAL_G1 |
| Crystal connected to XIN/XOUT. Use oscillator gain G1 (900 kHz to 3 MHz). | |
| #define | OSC_MODE_XTAL_G2 AVR32_PM_MODE_CRYSTAL_G2 |
| Crystal connected to XIN/XOUT. Use oscillator gain G2 (3 MHz to 8 MHz). | |
| #define | OSC_MODE_XTAL_G3 AVR32_PM_MODE_CRYSTAL_G3 |
| Crystal connected to XIN/XOUT. Use oscillator gain G3 (8 MHz and higher). | |
Slow clock frequency limits | |
| #define | OSC_SLOW_MAX_HZ 120000 |
| Maximum frequency of the slow clock in Hz. | |
| #define | OSC_SLOW_MIN_HZ 100000 |
| Minimum frequency of the slow clock in Hz. | |
| #define | OSC_SLOW_NOMINAL_HZ AVR32_PM_RCOSC_FREQUENCY |
| Nominal frequency of the slow clock in Hz. | |
OSC0/OSC1 startup values | |
| #define | OSC_STARTUP_0 AVR32_PM_OSCCTRL0_STARTUP_0_RCOSC |
| 0 cycles | |
| #define | OSC_STARTUP_128 AVR32_PM_OSCCTRL0_STARTUP_128_RCOSC |
| 128 cycles (1.1 ms) | |
| #define | OSC_STARTUP_16384 AVR32_PM_OSCCTRL0_STARTUP_16384_RCOSC |
| 16384 cycles (142 ms) | |
| #define | OSC_STARTUP_2048 AVR32_PM_OSCCTRL0_STARTUP_2048_RCOSC |
| 2048 cycles (18 ms) | |
| #define | OSC_STARTUP_4096 AVR32_PM_OSCCTRL0_STARTUP_4096_RCOSC |
| 4096 cycles (36 ms) | |
| #define | OSC_STARTUP_64 AVR32_PM_OSCCTRL0_STARTUP_64_RCOSC |
| 64 cycles (560 us) | |
| #define | OSC_STARTUP_8192 AVR32_PM_OSCCTRL0_STARTUP_8192_RCOSC |
| 8192 cycles (71 ms) | |
Functions | |
Oscillator Management | |
| static void | osc_disable (uint8_t id) |
| Disable oscillator id. | |
| static void | osc_enable (uint8_t id) |
| Enable oscillator id. | |
| static uint32_t | osc_get_rate (uint8_t id) |
| Return the frequency of oscillator id in Hz. | |
| static bool | osc_is_ready (uint8_t id) |
| Determine whether oscillator id is ready. | |
Chip-specific oscillator management functions.
Copyright (C) 2010 Atmel Corporation. All rights reserved.
Definition in file osc.h.
Generated on Fri Oct 22 12:15:25 2010 for AVR1300 Using the Xmega ADC by 1.6.3
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