2.1.1. APB interface

The APB interface block provides the IEM software access to the IEC registers. This module contains all of the registers and performs the register read and write address decoding. A standard API interface is defined that enables the IEM software to communicate with the Dynamic Performance Controller (DPC), Dynamic Performance Monitor (DPM), and Pulse Width Modulation (PWM) based DVS emulation blocks.

The APB interface also enables software to get status and diagnostic information about the support provided by the system. The register bank uses a 32-bit wide APB interface.

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