UCD90320: Register map document

Niklas Molin

Prodigy 10 points

Part Number: UCD90320

Tool/software:

Hi.

Can I find a register map for this chip, since we want to modify the GPIOs.

The datasheet only points to the GUI tool.

11 months ago

0 Niklas Molin 11 months ago

Prodigy 10 points

We also want to be able to modify the hold time before next step, based on the value of one of the GPIOs.

0 Troy Johnson 11 months ago in reply to Niklas Molin

TI__Expert 4245 points

Hi,

For modifying configuration settings without using the GUI, you may refer to the PMBus command reference guide for UCD90320, available here: https://www.ti.com/product/UCD90320 under Technical Documentation.

Can you clarify what you are looking for in your second question? Are you looking to delay the next part of power on/off sequence until a GPIO reaches a certain level, or are you looking to read GPIO voltage and change the delay time by a variable amount depending on that voltage?

Regards,

Troy

0 Niklas Molin 11 months ago in reply to Troy Johnson

Prodigy 10 points

Hi Troy.

Thanks for the update. I'll look at the document.

Regarding the other question.

We want to be able to delay a step and wait for a GPIO to get high or low, before it continues to the next step.

Regards,

Niklas

0 Troy Johnson 10 months ago in reply to Niklas Molin

TI__Expert 4245 points

Hi Niklas,

The UCD90320 can configure a GPIO pin as active high or active low GPI. This GPI can then be used as a sequence dependency for a rail.

You can refer to sections 8.4.2 GPI Configuration and 8.4.3 Rail Sequence Configuration in the UCD90320 datasheet.

Regards,

Troy

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UCD90320: Register map document