As there are multiple drivers and types of drivers on this device, there are multiple dedicated thermal sensors located on chip to monitor key block temperatures on the chip itself. Each of these sensors, called thermal clusters, measure local die temperature for specific device blocks. These measurements can be converted to a voltage for output on IPROPI pin, used to trigger temperature warnings or to shutdown a specific cluster which is exceeding acceptable temperature range or the entire device.

The device response to thermal cluster warnings can be configured with bit OTSD_MODE in the IC_CNFG1 register:

• Default mode (OTSD_MODE = 0b): if any cluster reaches thermal shutdown threshold for longer than t_{OTSD_DG}, the entire device is shutoff.
• Cluster mode (OTSD_MODE = 1b): if a cluster reaches thermal shutdown threshold for longer than t_{OTSD_DG}, only that cluster is shutoff.

There are four zones defined with thermal clusters, shown in the table and diagram below:

Figure 7-35 Thermal Sensor Zones

For each zone, there are comparator-based warnings for two temperature points, 115° for low and 140°C for high. Bit ZONEX_OTW_X (L or H) is latched in register IC_STAT2. Each warning can be individually disabled with bit ZONEX_OTW_X_DIS in register IC_CNFG2. If overtemperature shutdown occurs, ZONEX_OTSD bit is latched in register IC_STAT2.