TUSB2036 Not Enabling Power Switch

VinodKumar

Other Parts Discussed in Thread: TUSB2036

Hi,

I am using TUSB2036 as per attached sch. But power enable outputs from hub are always high and thus power is never enabled to USB host connectors. Suspend is also low. Can someone please help in understanding this?

Thanks

VinodSCH_501-1-00241_C1.pdf

over 10 years ago

0 Joel Jimenez0 over 10 years ago

TI__Mastermind 18655 points

Hello,
The DP and DM signals of the unused port should be tied to ground with 15K resistors like the pull-downs used on the active ports.
The TUSB2036 does not have internal pull-up resistors on the OVRCUR/ inputs and these are required.
Regards

Interface

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TUSB2036 Not Enabling Power Switch