TAS2120 has internal device junction temperature monitor which protects the device against over temperature. When the internal temperature rises above the Over temperature threshold, the device automatically shuts down and sets the Over temperature flag in the corresponding Interrupt registers. The device can automatically retry to power up if OTE_RETRY bit is set high. When set high, the device attempts to re-power up after every RETRY_WAIT_TIME setting (default 1.5 seconds of retry)

Along with over temperature protection, the device has thermal warning thresholds to allow for system to raise interrupts or flags as the junction temperature is approaching the shutdown. There are four thermal warning flags available at the internal temperature of 105C, 115C, 125C and 135C. Each thermal warning flag can be independently set to control the Interrupt generation on the IRQZ pad. The minimum temperature and the step size of the temperature warning flag can be programmed using the registers THERMAL_WARN_MIN_TEMP[23:0] and THERMAL_WARN_TEMP_STEP[23:0]

The real time internal junction temperature is monitored are stored in the register TMP_CNV and can be read using i2c commands.