6.3.1 Peripheral Access Controller (PAC)

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The Peripheral Access Controller (PAC) is a hardware security and safety feature that controls access to critical peripherals and reports access errors. It helps prevent unintended or unauthorized operations that could compromise an application’s system integrity or safety.

Key Features:

• Access control/protection—Read, write, and execute permissions for each peripheral
• Violation reports—Interrupt generation for unauthorized access
• Locking mechanism—Locked peripherals cannot be changed until the next device reset
• Integration with security domains—Enables separation of secure and non-secure access to peripherals