USB role reversal with Lightning to Type C cable

Question

borge-san OP

Created Sep ’17

Replies 3

Boosts 0

Views 1.3k

Participants 4

Hi,

My company is an MFi licesee. We develop audio accessories. Our newest product will feature a USB Type-C receptacle and typically appear as a USB 2.0 device on it. The product interfaces iPhone/computer/other smartphone to hifi kits with stunning sound quality.

Here is my question: Is it possible to implement USB Role Reversal on such a receptacle in combination with your USB-C to Lightning cable (A1702)?

By this I mean have the USB-C receptacle on my device accept the USB-C plug on the A1702 (which is probably hardcoded with resistors to appear as a USB-C device itself), negotiate with an MFi chip in my product, and then switch to device role.

At the same time, the default configuration of the USB-C receptacle should be to appear as a device when interfacing computers and Android units.

I am searching for convenient ways to use iPhones with my product. The present solution (camera adapter + USB A to C cable) is not very user friendly.

Best regards,

Børge

Boost

Answer 1

KMT OP

Sep ’17

>My company is an MFi licesee.

Ah...in that case, you may want to ask via the MFi support forums linked from your MFi access, I believe.

0

Answer 2

dankey OP

Dec ’21

Hi Børge,

Did you resolve this?

0

Answer 3

DTS Engineer OP

Apple

Dec ’21

This is public area of DevForums and, as such, is not a suitable place for discussing MFi issues. If you need help with such things I recommend that you either follow KMT’s advice or open a formal MFi tech support incident.

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