ARM Architecture - Bus Architecture
Given a system where the AHB bus runs at 100 MHz and the APB bus runs at 25 MHz, what is the main reason for this difference?
Given a system where the AHB bus runs at 100 MHz and the APB bus runs at 25 MHz, what is the main reason for this difference?
medium📝 Analysis Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Understand bus frequency roles
AHB is designed for high-speed data transfer; APB is for slower peripherals.Step 2: Analyze frequency difference
APB runs slower to save power and simplify peripheral interface; AHB runs faster for performance.Final Answer:
AHB bus supports high-speed data transfer, APB is slower for peripherals -> Option DQuick Check:
AHB fast, APB slow by design [OK]
Quick Trick: AHB fast, APB slow for peripherals [OK]
Common Mistakes:
- Assuming APB is faster
- Thinking AHB frequency is fixed
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