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Apr 26, 2025

QUIZ - On UPF - 4

QUIz on Universal Power Format ( UPF VLSI ) UPF Isolation Strategy Quiz

UPF Isolation Strategy Quiz

Time Left: 150 seconds

1. What does the isolation strategy in UPF ensure?

Voltage scaling
Safe signal transfer between power domains
High performance mode

2. When is an isolation cell typically enabled?

When source domain is ON
When source domain is OFF
Always

3. What UPF command is used to define isolation?

add_isolation
set_isolation
create_isolation_strategy

4. What is the function of an isolation cell?

It blocks voltage
It ensures defined signal levels when a domain is off
It manages clock domains

5. Isolation cells are inserted between:

Same power domains
A power-off and an always-on domain
Memory and logic blocks

6. What signal controls the isolation cell?

Reset
Isolation enable
Voltage reference

7. Isolation cells hold outputs at:

Floating levels
Defined logic level (0 or 1)
Oscillating signals

8. What happens if isolation is not used properly?

Increased performance
Signal corruption and glitches
Better area utilization

9. Can isolation strategy be defined independently of power domains in UPF?

Yes
No
Only for memory

10. Which domain typically hosts the isolation control signal?

Off domain
Always-on domain
Any powered domain

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