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[FAQ] Is TI USB-to-GPIO configurable?

Expert 4175 points

Yes. You can configure the USB-to-GPIO adapter to select different bus speed (100 kHz or 400 kHz), packet error checking (enabled or disabled), and pullup settings (open-drain, 668 Ω, 1 kΩ, and 2.2 kΩ).

When the adapter is used on TI UCD90xxx EVMs, all pullup settings other than open-drain can be used. The open-drain setting shall be used when the USB-to-GPIO dongle is connected to the customized board, which has the pullup resistor already.

The tool can be launched from the Fusion Digital Power Designer (Tools → SMBus & SAA Tool → SAA
Settings).

The tool can also be launched from the UCD3xxx and UCD9xxx Device GUI.

For more FAQ please check the following document.

UCD90xxx Family Frequently Asked Questions and Answers