i.MX ProcessorsのトピックRe: i.MX6 USB

i.MX6 USB

ban45 — Wed, 30 Sep 2020 01:14:47 GMT

When using i.MX6 ULL on the USB device side
Is it okay to connect only the DP and DN terminals?

Re: i.MX6 USB

weidong_sun — Wed, 30 Sep 2020 03:06:51 GMT

Hi Ban45,

>>Is it okay to connect only the DP and DN terminals?
Yes. But the following conditions should be met:
1. USB LDO should have input
Internal USB LDO has 2 input powers:
---USB OTG1 VBUS & USB OTG2 VBUS
USB LDO will select one of them to be input, so you should ensure one of them to be 5V Power.
Because USB LDO supplies 2 USB PHYs.

2. USB OTG1 ID pin should be pulled up to High via 10K resistor.
USB OTG1 ID's level determines USB OTG1 work mode(device or host)

3. GND pin
If you want to connect the USB port to external device(Not on board), GND pin should be needed.

Test it on your board, please!

Have a nice day!

B.R,

weidong

Re: i.MX6 USB

ban45 — Thu, 15 Oct 2020 01:24:49 GMT

Hello

Is there any problem with the following wiring?

>1. USB LDO should have input
>USB OTG1 VBUS

→(5V USB connector input)

>2. USB OTG1 ID pin should be pulled up to High via 10K resistor.
>USB OTG1 ID's level determines USB OTG1 work mode(device or host)

i.MX6 （device）　USB OTG1 ID : 10kΩ　3.3V pull -up ？　

3. GND pin

GND

Best Regard