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UCD9090: UCD9090 - USB-to-GPIO 'No Devices Found!'

Part Number: UCD9090

Hi! I'm Aiden. Nice meet to you.

I'm going to use TI's UCD9090 IC.
The connection to the laptop uses USB-to-GPIO.
However, 'No Devices Found!' is displayed and the connection cannot be established.

Currently, all 10 pins of 'USB-to-GPIO' are connected.

1. OS: Windows11
2. Main Power: USB-to-GPIO 5Pin-6Pin
3. SDA, SCL pull-up resistance 2.2KOhm
4. Program: Fusion Digital Power Designer

  • Hi

    Is this from your own board? In order to communicate with UCD9090, you only need SCL/SDA/GND signal.

    have you checked the V33A/V33D/BPCAP /RESET to ensure they are all good?

    Is the green led on from the dongle?

    regards

    Yihe