Detect connected devices on TUSB4041I

thomas audrain

Other Parts Discussed in Thread: TUSB4041I

Hi,

Is there a way to detect connected devices (enumerated) on TUSB4041I ?

In the datasheet a read that the cpdEN bit of Device Configuration Register 2 can anable or desable Device attach detec in auto mode.

many thanks

over 9 years ago

0 Elias Villegas M. over 9 years ago

TI__Guru* 76130 points

Hello,
The hub does not have a internal register used to detect attached devices, the bit cpdEN is used for battery charging purposes.
Can you elaborate more on your implementation?
Regards

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

Prodigy 20 points

I just want a way to know when a device is connected to the usb and power on a led for example.

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

TI__Guru* 76130 points

Hello,

If you are using power switches to control VBUS to the downstream ports you can use that signal to know when a USB device is attached, the TUSB4041I will assert the PWRON# signals to turn on the VBUS, this is kind of indirect solution and if there is an over-current condition you will loose that flag.

Regards

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Detect connected devices on TUSB4041I