topic Re: 8MM USB Vbus design in i.MX Processors

8MM USB Vbus design

jingletsai — Fri, 08 Nov 2019 07:44:20 GMT

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?

Thanks.

Jingle

Re: 8MM USB Vbus design

igorpadykov — Fri, 08 Nov 2019 23:51:27 GMT

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
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

Re: 8MM USB Vbus design

jingletsai — Wed, 13 Nov 2019 01:47:56 GMT

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

Re: 8MM USB Vbus design

igorpadykov — Wed, 13 Nov 2019 06:42:00 GMT

Hi Jingle

for schematic recommended to follow i.MX8M Mini EVK :

i.MX 8M Mini Evaluation Kit LPDDR4 Design Files

Best regards
igor

Re: 8MM USB Vbus design

jingletsai — Tue, 19 Nov 2019 13:19:43 GMT

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

Re: 8MM USB Vbus design

igorpadykov — Tue, 19 Nov 2019 13:41:13 GMT

Hi Jingle

example schematic was sent via mail.

Best regards
igor