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In ARM systems, what is the key function of bus arbitration?

easy📝 Conceptual Q1 of 15
ARM Architecture - Bus Architecture
In ARM systems, what is the key function of bus arbitration?
ATo decide which device can use the bus at a given time
BTo increase the clock speed of the bus
CTo encrypt data transmitted over the bus
DTo reduce the number of devices connected to the bus
Step-by-Step Solution
Solution:

  1. Step 1: Understand bus arbitration

    Bus arbitration manages access to a shared bus among multiple devices.

  2. Step 2: Identify the primary goal

    The main goal is to control which device uses the bus at any time to avoid conflicts.

  3. Final Answer:

    To decide which device can use the bus at a given time -> Option A

  4. Quick Check:

    Bus arbitration controls access, not speed or encryption. [OK]
Quick Trick: Bus arbitration grants bus access fairly [OK]
Common Mistakes:
  • Confusing arbitration with bus speed control
  • Thinking arbitration encrypts data
  • Assuming arbitration reduces device count

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