TPS65987D: ADCIN2 Settings affect PD negotiation?

Hi,

When you said all 3 PDs have same ADCIN2 setting, you don't mean that they all have the same address - correct? You are sure you can read the correct individual address by adjusting the resistor divider shown here. 

ADCIN2 should not affect the PD negotiation. It is likely the configuration for the other 2 PDs are not loaded correctly. Can you verify maybe one at a time?

Yes, sorry.  To be more clear, I have 1 chip with 1 10k resistor tied to LDO_3V3 for 0x23, and 1 10k/10k resistor tied to get 0x22, and then a 10k/5k resistor to get i2c 0x21 address. 

I guess it doesn't matter that I have 3 chips because my EC can see all 3 chips and talk to each one just fine.  My real question here is, why will my PD chips not negotiate to 20V?

OK, so we know ADCIN2 configuration is correct we can drop that.

How do you load the PD configuration, through flash or EC? How VBUS are connected in the system? Is there a way you can verify the configurations are loaded correctly, maybe do the test one PD at at time? Is it possible to send me the schematic and PD log?

so normally I can use the GUI and grab status, but I'm working remote at the moment.  I have i2c access and can pull register data.  Would that help?  Maybe register 0x27?

Are you able to do one PD at a time and what's your ADCIN1 configuration for the 3 PDs?

Are they all configure to have the same sink capabilities? Can you send the project files for the 3 PDs?

ADCIN1 is (supposed to be) set to Configuration 3 from the Dead Battery Mode table with SPI_MISO pulled low.

I learned that pulling SPI_MISO low disables SPI flash from loading and I've also not programmed these flash parts so they have not been configured with the correct headers.

So it's not configured correctly.

Yes, I think that's right.

What things can I look at to make sure it configures correctly?  Like I said earlier, one of them did work correctly until I "fixed" ADCIN2 resistor divider to get address 0x21.

Can you first program/load the config to the flash in normal mode and read the configuration to confirm all settings are correct? You can use customer use register (0x6) to check as an example.