TPS65994AD: On power-up PD controller doesn't initiate EEPROM access

Gregory Korsounsky

Part Number: TPS65994AD

On power-up PP5V and VIN_3V3 are stable.

LDO_3V3 is outputted from the PD controller.

ADCVIN1/2 pins are both at 3.3V.

However, PD controller doesn't start EEPROM access via I2C3.

I2C3 remans IDLE (SCL and SDA at constant 3.3V)

According to the datasheet, EEPROM access should start unconditionally.

What can be wrong?

0 Hari Patel1 over 4 years ago

Hi Gregory,

How did you flash the EEPROM?

Thank you,

Hari

0 Gregory Korsounsky over 4 years ago in reply to Hari Patel1

With external I2C Master (like Aardvark).

Thanks,

Gregory

0 Kedar_Sirdeshpande over 4 years ago in reply to Gregory Korsounsky

Hi Gregory,

Can you share a screenshot of the Boot Flags register (0x2D) captured using the configuration GUI?

In addition to this, can you also share the response of the "PTCq" command?

-Kedar

0 Kedar_Sirdeshpande over 4 years ago in reply to Kedar_Sirdeshpande

Hi Gregory,

I will close this thread for now, since it's been Idle for some time. You may create a new one if you still need support on this.

-Kedar

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