is USB1 VBUS connection required on LPC55S69 ?

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is USB1 VBUS connection required on LPC55S69 ?

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hazarm
Contributor I

is USB1 VBUS connection required on LPC55S69? 
can the vbus detected by something else like pd-controller, and usb1 can be turned on by software/pin toggle?

thanks,

h

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Pavel_Hernandez
NXP TechSupport
NXP TechSupport

Hello, I recommend download the Hardware design guidelines.

Pavel_Hernandez_0-1728671366134.png

Best regards,
Pavel

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765 次查看
hazarm
Contributor I
hi pavel,

maybe i wasn't clear with my question. we still want to use usb1 interface.

the problem is it is an usb-pd input so the VBUS is between 5V-20V. we do have pd controller can pull an interrupt when the vbus is connected.

so the question is can we enable the USB1 phy internally without a need for external VBUS.
this is possible with USB0 phy because 3.3V is expected and can be turned on internally.

thanks,
best regards,
hazar
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Pavel_Hernandez
NXP TechSupport
NXP TechSupport

Hello, I reviwed the information on the Datasheet this may be clear for you.

Pavel_Hernandez_0-1729029516922.png

Best regards,
Pavel

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