TUSB4020BI / Can't connect with CPU

ACGUY

Other Parts Discussed in Thread: TUSB4020BI

Hi,

Our customer designed a board mounted with TUSB4020BI.
However they can't communicate with the CPU yet.

Our customer states are follows;
- Installed the USB host controller to CPU.
- Ran the initial connection confirmation function.
- Response from the CPU was ”Unconnect”.
- TUSB4020BI didn't to pull-up the D+/- port.

We have received a circuit diagram from the customer.

Solve the problem, we need the help.

Best regards,
Nagai

over 9 years ago

0 Elias Villegas M. over 9 years ago

TI__Guru* 76130 points

Hello,
We need to look at the schematics, if you don't want to make it public you can send me a private message with your email address via this forum.
Regards

0 ACGUY over 9 years ago in reply to Elias Villegas M.

Guru 11170 points

Hello Elias-san,

I apologize that the reply was delayed to you.
I found the mistake in firmware of customer side.
Problem has been resolved.

Thanks,
Nagai

0 ACGUY over 9 years ago in reply to Elias Villegas M.

Guru 11170 points

Hello Elias-san,

I pointed out the mistake of F/W coded by customer.
However, that didn't be resolve.

Would you help us that I send the schematics to you?

Best regards,
Nagai

0 Elias Villegas M. over 9 years ago in reply to ACGUY

TI__Guru* 76130 points

Hello,

Yes, you can send me the schematic in a private message.

What do you mean by "firmware"? This device does not require any firmware.

Regards

Interface

Interface forum

TUSB4020BI / Can't connect with CPU