TPS25762-Q1: Fireware loading without EEPROM

Hi Han,

The table you attached is referring to the boot mode rather than the fw flashing.

Please explain your system level requirement so I can answer your question better.

BR,

Ke Wang

Hi Ke,

Thanks for your response. Please help review the system-level requirements below and share your valuable input

1. Mini 45W PD soure via USBC

2. USB3/2: Use PD GPIO to control HD3SS3411TRWARQ1 for USB3 MUX. If the SOC cannot use USB3, downgrade to USB2 DP/DM.  If default fw can support this requirement? 

3. As low cost as possible, eliminate EEPROM if possible. 

Thanks,

Han

Hi Han,

TPS25762 can work without the EEPROM based on an OTP setting. There are some bandwidth to set the config but not as flexible as having an EEPROM or MCU in the system.

The GPIO based HUB control function may not be supported without EEPROM. Can you talk about more details so I can check if it can be supported?

BR,

Ke Wang

Hi Ke,

There is an MCU (Infineon TC397) on the board that connects PD controller I2C2. I attached the schematic for your reference. For GPIO based hub control function (CC controller like the schemtic attached), could you help check if EEPROM is a must? I noticed that there is ROM and RAM inside PD controller and PD controller supports USB endpoint firmware updates. Does it mean the fw can be updated inside the pd controller using fw update mode so that EEPROM is not needed? PD review.pdf

Thanks,

Han