SLVSGZ4A June 2023 – June 2024 TPS6521905
PRODUCTION DATA
GPO1 and GPO2 pins are always configured as an output.
The GPIO-pin is an input/output, however, the input-functionality is only used in multi-PMIC configuration. In single-PMIC configuration, the pin can be used as an output. The state can be read by polling the bit GPIO_STATUS bit in MFP_CTRL register.
The I/O-configuration of the GPIO-pin is done by the MULTI_DEVICE_ENABLE bit in MFP_1_CONFIG register.
If configured as outputs, these pins can be used to sequence external rails. The GP(I)Os can be included in the sequence or be controlled via I2C-interface, writing to GPOx_EN respectively GPIO_EN bit in GENERAL_CONFIG register. The GPO is released high if activated.
The GPIO function is to be used if multiple TPS6521905 need to be synchronized, in case more rails need to be supplied. See application section on usage. See section "Multi-PMIC operation" for details.
The polarity of these pins is not changeable.