ARM Architecture - Bus Architecture
A developer notices that two masters are trying to access the same slave simultaneously, causing data corruption. What is the most likely issue in the bus matrix configuration?
A developer notices that two masters are trying to access the same slave simultaneously, causing data corruption. What is the most likely issue in the bus matrix configuration?
medium📝 Analysis Q14 of 15
Step-by-Step Solution
Solution:
Step 1: Identify cause of simultaneous access
Data corruption from simultaneous access indicates arbitration failure in the bus matrix.Step 2: Understand arbitration role
Arbitration logic controls which master accesses a slave at a time to prevent conflicts.Final Answer:
The bus matrix arbitration logic is not properly implemented -> Option AQuick Check:
Arbitration logic failure = simultaneous access [OK]
Quick Trick: Check arbitration logic if simultaneous access causes corruption [OK]
Common Mistakes:
- Blaming clock speed for access conflicts
- Assuming slaves are disconnected
- Thinking data width mismatch causes corruption
Master "Bus Architecture" in ARM Architecture
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