TM4C1290NCPDT: Problem with USB Host Mode on TM4C129x devices

Lukas Haag

Part Number: TM4C1290NCPDT
Other Parts Discussed in Thread: EK-TM4C1294XL

Hello all,

We have developed a board with TM4C1290NCPDT with USB Host Mode. Sometimes, when we connect a USB Stick, the processor gets very hot and resets after some time.

The same behavior is seen on the EK-TM4C1294XL Rev. D Evaluation board. The problem seems to be also in the reference design of TI.

Any suggestions how to solve this problems? We already have produced hundreds of these boards. Any help is highly appreciated.

Best regards

lukas

over 6 years ago

0 Charles Tsai over 6 years ago

TI__Guru**** 159385 points

Hi Lukas,

I think the below errata may be the reason. Please also refer to a similar post here.

0 Lukas Haag over 6 years ago in reply to Charles Tsai

Prodigy 20 points

Hi Charles

Thank you for your answer. Do you think it is necessary to tie these Pins with 1kOhm to GND or can they be left floating? We can not see the misbehavior anymore when USB0VBUS is removed from 5V.

Best regards

Lukas

0 Charles Tsai over 6 years ago in reply to Lukas Haag

TI__Guru**** 159385 points

Hi Lukas,
You can even use the PB1 as a GPIO if you want if you are in host mode only. Please refer to the below posts.

e2e.ti.com/.../997751
e2e.ti.com/.../997751

Arm-based microcontrollers

Arm-based microcontrollers forum

TM4C1290NCPDT: Problem with USB Host Mode on TM4C129x devices