JAJSVI1 October 2024 TPS25763-Q1
PRODUCTION DATA
The EN/UVLO pin provides electrical ON and OFF control for the TPS25763-Q1. When VEN/UVLO is below 1.15 V (typ), the device is in shutdown mode in which the Cortex M0 is disabled and only minimal analog functions are operating. Refer to VIN UVLO and Enable/UVLO section for the detailed description of the EN/UVLO pin functionality.
The TPS25763-Q1 enters active mode when VEN/UVLO is above its rising threshold, VEN(OPER), and the supply voltage on the IN pin is above the VIN undervoltage lockout threshold, VIN(UVLO_R). In active mode, the internal analog circuits are fully operational with the M0 enabled and executing firmware from ROM.
At the onset of active mode, firmware boot code attempts to measure the resistance on the TVSP pin and decode a TVSP Index value. Upon successful configuration and firmware patch load, the device is ready to begin operation per configuration settings stored on the external EEPROM. If the configuration and patch data do not load successfully due to communications error the device continues to operate with only Port A enabled with standard Type-C functionality. Index value 8 is reserved for use when updating device configuration and firmware patch information through the TPS25763-Q1 GUI and Port A connection. Once device boot is complete, device firmware controls and manages USB connections in accordance with loaded application configuration settings.