How to configure LDO_USB to be on in extended sleep mode

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Wed, 2020-11-18 09:57
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fschuette
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How to configure LDO_USB to be on in extended sleep mode

Hey there,

I'm using the Dialog DA14682 and am powering it via USB. In the datasheet it says on page 27 (extended sleep mode):

LDO_USB=OPT

*OPT: optionally on or off, configurable by SW.

Where can I configure this LDO to be running when being in extended_sleep mode?

Thanks

Keywords:
DA14682
sleep mode
USB_LDO
Device:
DA1468x
结婚,16 2020-11-18
PM_Dialog
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Hi fschuette,

Hi fschuette,

让我看看我t and I’ll get back to you.

Thanks, PM_Dialog

Thu, 2020-11-19 10:54
PM_Dialog
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Hi fschuette,

Hi fschuette,

The LDO_USB is enabled if the USBPAD_REG[USBPAD_EN] bitfield is set. There is not any specific register for enabling the LDO_USB. The USBPAD_REG[USBPAD_EN] must be set if you would like to P1_1 or P2_2 in GPIO mode. Please see P1_1 and P2_2 Pin description (Table 2 from the datasheet).

Keep in mind that both P1_1 and P2_2 must be use either in GPIO mode or USB mode. It’s not possible to use both GPIO mode and USB mode simultaneously.

Could you please clarify what you would like to accomplish? Does this question related to the USB functionality and P1_1/P2_2 ?

Thanks, PM_Dialog

Mon, 2020-11-23 08:17
fschuette
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Hello,

Hello,

thanks for your reply. I dont have a particular problem that I want to accomplish. The datasheet just says that it is possible to optionally turn on/off the LDO and I am just wondering where...