ARM Architecture - Power Modes
Which of the following correctly represents how clock gating is typically implemented in ARM RTL code?
Which of the following correctly represents how clock gating is typically implemented in ARM RTL code?
easy📝 Factual Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Understand clock gating implementation
Clock gating is done by controlling the clock enable signal to flip-flops or registers, effectively stopping clock toggling when not needed.Step 2: Evaluate options
Using an enable signal to gate the clock input to a flip-flop describes gating the clock input using an enable signal, which is the standard method. Options B, C, and D describe power gating, frequency scaling, and pipeline stalling, which are different techniques.Final Answer:
Using an enable signal to gate the clock input to a flip-flop -> Option CQuick Check:
Clock gating controls clock enable signals, not power or frequency directly. [OK]
Quick Trick: Clock gating uses enable signals to control clock toggling [OK]
Common Mistakes:
- Confusing clock gating with power gating
- Thinking clock gating changes clock frequency
- Assuming clock gating disables power supply
Master "Power Modes" in ARM Architecture
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore ARM Architecture Quizzes