3.1.1 Safety Applications

The following figure shows a block diagram of an assumed safety-related application. In this case, the ZLA30279 is providing multiple clock signals to an automotive SoC. The SoC is providing medium-class computing. For example, this includes in-vehicle infotainment, low-end integrated cockpit, connected gateway, and central server functions.

Figure 3-1. SoC Monitors Status of ZLA30279 Clock Generator

In this case, the SoC monitors the operation of the ZLA30279, reading parameters introduced in the Assumed Safety Goals section and covered in detail in the Safety Mechanisms section. It is capable of taking action if any error flags are detected, moving the ZLA30279 to a safe state and making changes elsewhere in the system.

Note: A separate oscillator, the DSA1124, provides an independent main clock to the SoC. If there are any clock issues within the ZLA30279, these can be reported to the SoC, whose independent main clock is unaffected.