Author Topic: Upgrading to USB Type C (USB2.0) DRP (Dual Role Port)  (Read 1059 times)

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Offline sukuTopic starter

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Upgrading to USB Type C (USB2.0) DRP (Dual Role Port)
« on: July 16, 2018, 11:43:11 am »
In the USB micro B receptacle we had an ID pin that was used the notify the microcontroller that an On-The-Go adapter/device is connected, the controller could then reconfigure its USB peripheral to fulfill USB-Host duties.

I'm upgrading  a design to uses the type C receptacle, where instead of the ID pin we have CC1 and CC2 logic. What I'm looking for is an interface chip (like the TUSB320LA) with the following requirements:

1. It negotiates the usb host/device roles (DRP)
2. It outputs the ID logic
3. It receives the maximum allowed current @5V
4. It has built-in ESD protection for D+/D- lines
5. It preferably doesn't need I2C for configuration

4 & 5 is what makes me unhappy about TUSB320LA

Does anyone have hands on experience with upgrading designs? Please share the knowledge!
Thanks!
 

Offline krho

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Re: Upgrading to USB Type C (USB2.0) DRP (Dual Role Port)
« Reply #1 on: July 17, 2018, 03:22:16 pm »
Look at what on-semi has to offer e.g FUSB303. I know that they do have the complete port controllers where you can do the whole power delivery and custom peripheral support.
I've looked at the ton of those controllers and what I remember is that almost all of them have I2C as a requirement.
 

Offline towlerg

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Re: Upgrading to USB Type C (USB2.0) DRP (Dual Role Port)
« Reply #2 on: July 18, 2018, 01:20:05 pm »
Perhaps programme a Microchip Pic with OTG?

Microchip make a large range of USB hubs and interfaces.
 

Offline krho

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Re: Upgrading to USB Type C (USB2.0) DRP (Dual Role Port)
« Reply #3 on: July 19, 2018, 04:03:59 am »
Perhaps programme a Microchip Pic with OTG?

Microchip make a large range of USB hubs and interfaces.
This is bad advice.. some lines in USB-C can go up to 20V.. so you need the protection. Most of the USB-C compatible CC/VUBS etc.. drivers can go up to 28V on those lines
 


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