ARM Architecture - Bus Architecture
A designer connects a high-speed memory controller to the APB bus instead of the AHB bus. What is the likely issue?
A designer connects a high-speed memory controller to the APB bus instead of the AHB bus. What is the likely issue?
medium📝 Analysis Q6 of 15
Step-by-Step Solution
Solution:
Step 1: Understand bus speed differences
APB is slower and simpler; AHB is high-speed for memory controllers.Step 2: Predict impact of wrong connection
Connecting high-speed memory to APB reduces performance due to slower bus speed.Final Answer:
The system will have reduced performance due to APB's lower speed -> Option BQuick Check:
High-speed device on slow bus = performance drop [OK]
Quick Trick: High-speed devices need AHB, not APB [OK]
Common Mistakes:
- Assuming no speed difference
- Thinking device won't work at all
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