[Solved] Which of the following correctly describes the APB bus? — Ans: A slower bus designed for simple peripheral communication | ARM Architecture

ARM Architecture - Bus Architecture

Which of the following correctly describes the APB bus?

AA slower bus designed for simple peripheral communication

BA bus that connects multiple CPUs

CA bus used only for debugging purposes

DA high-speed bus for memory access

Step-by-Step Solution

Solution:

Step 1: Identify APB characteristics
APB (Advanced Peripheral Bus) is slower and used for simple peripheral communication.
Step 2: Eliminate incorrect options
APB is not high-speed, not only for debugging, nor for CPU interconnection.
Final Answer:
A slower bus designed for simple peripheral communication -> Option A
Quick Check:
APB = slow peripheral bus [OK]

Quick Trick: APB is slow and simple for peripherals [OK]

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Which of the following correctly describes the APB bus?