TS-7250-V3 Supervisory Low Power Mode

To achieve the lowest power sleep state, the kernel is configured with the reset controller driver, ts_supervisor_rstc. This driver implements shutdown for the SBC to enter the low power state. For example, shutdown -h now will cause a proper shutdown of the CPU with the last step of this issuing a command to the Supervisory Microcontroller to remove power from the whole platform. The Supervisory Microcontroller will remain in a lower power state until one of the following events occurs. At which time it will wake up and enable power to the rest of the platform to let it begin a normal boot process.

• CN8 ADC Header pin 9 has 3-30 V applied.
• 5 V goes below 4.7 V, and then back above 4.7 V.
• RTC Alarm occurs
• USB Console connected

In this low power state, the entire platform draws approximately 25 mW. The wakeup source can be detected from the reset reasons.