MSP432 is a System-On-Chip, which means it includes a processor core and some subsystem peripherals built on a single chip. This chip is called a MicroController Unit (MCU).

In the above diagram:

1. The green-highlighted blocks are related to the livelihood of the chip: Processing (CPU), Power, reset, and clock.

2. The orange-highlighted blocks are for internal communication between various blocks on the chip.

3. The magenta-highlighted blocks are various types of memory. Memory is used for storing the program and data.

4. The cyan-highlighted blocks show the timers. Timers play an important role in designing embedded systems.

5. The yellow-highlighted blocks are various types of modules that help the microcontroller interact with other digital devices. These include simple digital I/O as well as I2C, UART, SPI, etc.

6. The yellow-and-orange blocks show the analog interface needed so that the microcontroller can interact between its own digital world and the analog world outside.

7. The purple highlighted blocks are for implementing security and reliability protocols, specifically AES and CRC.