8MM USB Vbus design

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8MM USB Vbus design

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jingletsai
Contributor II

Hi Sir,

         We use 8MM to design 1*usb otg and 1*usb host hub, could you please offer us some suggestions:

1. CPU USB PHY pin: Will usb1_vbus and usb2_vbus are signal or voltage?

2. Please help us to check the follows circuit?

cpu usb phy.bmp

USB OTG and USB HUB.bmp

Thanks.

Jingle

5 Replies

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igorpadykov
NXP Employee
NXP Employee

Hi Jingle

it is signal and its description can be found in sect.3.9.14.1 Pad/Package/Board

connections i.MX 8M Mini Applications Processor Datasheet for Consumer Products

Best regards
igor
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671 Views
jingletsai
Contributor II

Hi Igor,

          Thanks, from datasheet it's a signal, but base on the above USB circuit block,

          Could you help to check schematic and give us some suggestion.

BR,

Jingle

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igorpadykov
NXP Employee
NXP Employee

Hi Jingle

for schematic recommended to follow i.MX8M Mini EVK :

i.MX 8M Mini Evaluation Kit LPDDR4 Design Files

Best regards
igor

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671 Views
jingletsai
Contributor II

Hi Igor,

          EVK support USB Type C, but my question is to use 8MM to design 1*usb otg and 1*usb host hub,

           Please help us to check the above schematic about USB1_VBUS and USB2_VBUS?

BR,

Jingle

           

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igorpadykov
NXP Employee
NXP Employee

Hi Jingle

 

example schematic was sent via mail.

 

Best regards
igor

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