TUSB2036: Connect to Tablet via USB C.

Hi,

Please see this e2e thread on the possible USB2 connection, https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1254983/tusb2036-developing-usb-solution-tablet-host-charging-usbc-pd-input. Do you want to provide power over USB-C as well?

Thanks

David

Yes, I also want to provide power over usbc. Do you have any options? Currently using the mp5031. 

Hi,

Is the tablet going to be a USB data source and sink, and power source and sink? For downstream, I draw a rough block diagram as shown below, 

The MP5031 will provide Type-C charging function, while the hub provides USB2 SDP function without the BC1.2. If you need BC1.2, then you can use our USB2 or USB3 hub which support BC1.2. 

You will also need to make sure the MP5031 disables its BC1.2 and configure one of its GPIO as OVERCURRENT pin and feeds back to the hub.

Thanks

David

This is a block diagram of the design. Thanks for the response. 

We are currently testing the hub by itself but are having issues connecting with over usb c, it does not appear to the system. The design works as intended with USB A. This is a schematic of the usb c port.

Hi,

So if the TUSB2036 upstream port is connected to a USB host with a Type-A connector, it is able to be recognized.

But if TUSB2036 is connected to a host with USB-C connector, it is not able to be recognized, is my understanding correct?

In this case, can you check the VBUS voltage when connected to a USB-C connector, are you seeing 5V?

Can you also share the TUSB2036 hub schematic?

Thanks

David

Based off the reference design. 

1. Yes.

2. Will reply with results in a bit. 

3. Shared below.

The VBUS is 5V. Do you think the usb is not wired correctly?