ARM Architecture - Power Modes
Given a system using clock gating, what happens to power consumption when a module's clock is disabled?
Given a system using clock gating, what happens to power consumption when a module's clock is disabled?
medium📝 Analysis Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Understand clock gating effect
Disabling the clock stops switching activity, reducing dynamic power.Step 2: Evaluate other options
Power does not increase or stay the same; it decreases. Random fluctuation is incorrect.Final Answer:
Power consumption decreases because the module stops switching -> Option CQuick Check:
Clock gating reduces power by stopping clock signals [OK]
Quick Trick: Stopping clock stops switching, saving power [OK]
Common Mistakes:
- Thinking disabling clock increases power
- Assuming power stays constant
- Confusing clock gating with power spikes
Master "Power Modes" in ARM Architecture
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