TAS2563's Smart Amp algorithm can provide advance speaker protection based on speaker characterization models and accurate output Current and Voltage Sense (IV Sense) tracking. By utilizing IV Sense, TAS2563 can constantly monitor the output power deliever to the speaker, and analyze the health of the speaker, in terms of temperature and excursion limits. Users can enable IV Sense in the register map by writing 0x0 to ISNS_PD and VSNS_PD of register 0x02. Thermal and excursion data can be read externally through TDM/I²S by assigning the TDM slots in the Transmit tab of TDM in "Advance" mode as shown in the Figure 1-9.

IV Sense data can also be configured in TDM tab to be read externally when the device is in ROM mode. Since ROM mode bypasses internal processing and protection algorithm for testing purposes, it is advised to avoid from playing pure tone to prevent any speaker damages. For users who would like to read TDM data from the device via USB to PC, make sure to assign the correct slot for each channel for USB communication (e.g. Slot 0 for I sensing and slot 4 for V sensing in 32 bits channel).

For more information about IV Sense and/or verify the accuracy of IV Sense, please refer to the datasheet and Current and Voltage Sensing Accuracy

Figure 1-9 TDM Transmit IV Sense Data.