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change(psram): update doc about ldo

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Armando 2023-12-25 18:33:38 +08:00
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docs/en/api-guides/external-ram.rst
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@ -32,8 +32,8 @@ Hardware
Some PSRAM chips are 1.8 V devices and some are 3.3 V. Consult the datasheet for your PSRAM chip and {IDF_TARGET_NAME} device to find out the working voltages.
By default PSRAM is powered up by the on-chip LDO2, you can use :ref:`CONFIG_SPIRAM_LDO_ID` to switch the LDO ID according. Setting this value to -1 for using external power supply.
By default PSRAM connected LDO is set to correct voltage according to the used Espressif module. You can still use :ref:`CONFIG_SPIRAM_LDO_VOLTAGE_MV` to select LDO output voltage if you do not use an Espressif module. When using external power supply, this option does not exist.
By default PSRAM is powered up by the on-chip LDO2, you can use :ref:`CONFIG_ESP_VDD_PSRAM_LDO_ID` to switch the LDO ID according. Setting this value to -1 for using external power supply, this means the on-chip LDO will not be used.
By default PSRAM connected LDO is set to correct voltage according to the used Espressif module. You can still use :ref:`CONFIG_ESP_VDD_PSRAM_LDO_VOLTAGE_MV` to select LDO output voltage if you do not use an Espressif module. When using external power supply, this option does not exist.
.. note::