7.3.3 Power-Up
The power-up sequence for the TPS65653-Q1 is as follows:
- VANA (and VIN_Bx) reach minimum recommended levels (VVANA > VANAUVLO). This initiates power-on-reset (POR), OTP reading, and enables the system I/O interface. The I2C host should allow at least 1.2 ms before writing or reading data to the TPS65653-Q1.
- Device enters standby mode.
- The host can change the default register setting by I2C if needed.
- The regulators can be enabled/disabled and the GPO signals can be controlled by EN pin and by I2C interface.
Transitions between the operating modes are shown in Modes of Operation.