esp-idf/docs/zh_CN/api-reference/system/inc/power_management_esp32s2_an...

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{IDF_TARGET_APB_FREQ: default="80 Mhz", esp32c2="40 MHz"}
+---------------+---------------------------------------+-------------------------------------+
| CPU 最高频率 | 电源管理锁获取情况 | APB 频率和 CPU 频率 |
| | | |
+---------------+---------------------------------------+-------------------------------------+
| 240 | 获取 ``ESP_PM_CPU_FREQ_MAX`` | | CPU: 240 MHz |
| | | | APB: {IDF_TARGET_APB_FREQ} |
+ +---------------------------------------+-------------------------------------+
| | | 获取 ``ESP_PM_APB_FREQ_MAX``, | | CPU: 80 MHz |
| | | 未获得 ``ESP_PM_CPU_FREQ_MAX`` | | APB: {IDF_TARGET_APB_FREQ} |
+ +---------------------------------------+-------------------------------------+
| | 无 | 使用 :cpp:func:`esp_pm_configure` |
| | | 为二者设置最小值 |
+---------------+---------------------------------------+-------------------------------------+
| 160 | 获取 ``ESP_PM_CPU_FREQ_MAX`` | | CPU: 160 MHz |
| | | | APB: {IDF_TARGET_APB_FREQ} |
+ +---------------------------------------+-------------------------------------+
| | | 获取 ``ESP_PM_APB_FREQ_MAX``, | | CPU: 80 MHz |
| | | 未获得 ``ESP_PM_CPU_FREQ_MAX`` | | APB: {IDF_TARGET_APB_FREQ} |
+ +---------------------------------------+-------------------------------------+
| | 无 | 使用 :cpp:func:`esp_pm_configure` |
| | | 为二者设置最小值 |
+---------------+---------------------------------------+-------------------------------------+
| 80 | | 获取 ``ESP_PM_CPU_FREQ_MAX`` | | CPU: 80 MHz |
| | | 或 ``ESP_PM_APB_FREQ_MAX`` | | APB: {IDF_TARGET_APB_FREQ} |
+ +---------------------------------------+-------------------------------------+
| | 无 | 使用 :cpp:func:`esp_pm_configure` |
| | | 为二者设置最小值 |
+---------------+---------------------------------------+-------------------------------------+