TUSB8043A: Does TUSB8043AI/TUSB8044AI have a serial port like debug port?

1. Does TUSB8043AI/TUSB8044AI  have a serial port similar to the debug port? Let's check the HUB logs.

2. Which serial port should we use if we want to update firmware or modify registers?

3. Could you please provide the latest firmware of TUSB8043AI and TUSB8044AI?

Thanks

Kailyn Chen：

Hello, according to your questions, first, there is no specified serial port to debug. We have a FAQ which is about how to debug the USB hub when downstream ports are non-operaional. Hope it is useful for you:

https://e2e.ti.com/support/interface-group/interface/f/interface-forum/719918/faq-how-do-i-debug-a-ti-usb-hubs-when-downstream-ports-are-non-operational

2. You can use the SMbus interface for configuration register access while TUSB8044 is used as SMBus slave by an external SMBus master. 

3. I am sorry that we don't have the latest firmware for reference.