220.127.116.11 SPI Interface
The SPI is a 4-wire slave interface used to access and configure the device. The SPI allows read-and-write access to the configuration registers of all resources of the system.
The SPI uses the following signals:
- SCE (I2C2_SCL_SCE): Chip enable – Input driven by host master, used to initiate and terminate a transaction
- SCK (I2C1_SCL_SCK): Clock – Input driven by host master, used as master clock for data transaction
- SDI (I2C1_SDA_SDI): Data input – Input driven by host master, used as data line from master to slave
- SDO (I2C2_SDA_SDO): Data output – Output driven by TPS65903x-Q1 PMIC device, used as data line from slave to master and defaults to high impedance