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Which of the following is the correct way to describe clock gating in ARM chips?

easy📝 Factual Q12 of 15
ARM Architecture - Power Modes
Which of the following is the correct way to describe clock gating in ARM chips?
AIt stops the clock signal to inactive modules
BIt disables the power supply to the chip
CIt increases the clock frequency dynamically
DIt resets the clock to default settings
Step-by-Step Solution
Solution:

  1. Step 1: Review clock gating function

    Clock gating stops the clock signal to parts of the chip that are inactive to save power.

  2. Step 2: Match the correct description

    Only It stops the clock signal to inactive modules correctly states that clock gating stops the clock signal to inactive modules.

  3. Final Answer:

    It stops the clock signal to inactive modules -> Option A

  4. Quick Check:

    Clock gating = Stop clock to inactive parts [OK]
Quick Trick: Clock gating stops clocks, not power or resets [OK]
Common Mistakes:
  • Confusing clock gating with power supply shutdown
  • Thinking clock gating changes clock frequency
  • Believing clock gating resets clock settings

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