ARM Architecture - Power Modes
How can combining dynamic voltage scaling with clock gating improve power efficiency in an ARM system?
How can combining dynamic voltage scaling with clock gating improve power efficiency in an ARM system?
hard📝 Application Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Understand dynamic voltage scaling
It lowers voltage to save power when full speed is not needed.Step 2: Understand clock gating
It stops clocks to inactive modules, reducing switching power.Step 3: Combine effects
Lower voltage plus stopping clocks reduces overall power efficiently.Final Answer:
By lowering voltage and stopping clocks in inactive modules to reduce power -> Option DQuick Check:
Voltage down + clock gating = better power saving [OK]
Quick Trick: Combine voltage drop and clock stop for max savings [OK]
Common Mistakes:
- Thinking increasing voltage saves power
- Assuming permanent power off is practical
- Believing full speed always saves power
Master "Power Modes" in ARM Architecture
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