How should we connect i.MX6DQ USB_OTG_ID to use HNP (role swapping)?

[satoshishimoda]

Hi community,

Our partner have a question about i.MX6DQ USB OTG.

They want to use USB role swqpping with HNP.

They will use i.MX6DQ USB OTG as host normally (OTG A-device), and change its role when Host request flag comes from USB B-device.

In this case, how should they connect USB_OTG_ID pin?

Tied to GND? or control its logic high or low by GPIO?

Best Regards,

Satoshi Shimoda

[igorpadykov · Accepted solution]

Hi Satoshi

one can ground ID on i.MX6DQ USB OTG, so by default it operates as Host,

after B-device connection they can USB role swapping using HNP, as shown below.

USB On-the-Go Basics - Tutorial - Maxim

Best regards

igor

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