ARM Architecture - Bus Architecture
Why does the ARM architecture separate the system bus into AHB and APB instead of using a single bus for all peripherals?
Why does the ARM architecture separate the system bus into AHB and APB instead of using a single bus for all peripherals?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand bus separation rationale
Separating buses allows optimization: AHB for speed, APB for simplicity and low power.Step 2: Evaluate incorrect options
Cost increase and forcing same speed are negatives; bridges are needed for compatibility.Final Answer:
To reduce complexity and power consumption for low-speed peripherals -> Option AQuick Check:
Bus separation optimizes speed and power [OK]
Quick Trick: Separate buses save power and simplify design [OK]
Common Mistakes:
- Thinking separation increases cost
- Assuming no bridges needed
Master "Bus Architecture" in ARM Architecture
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