Hardware interview practice
Use isolation at a powered-down domain boundary
A switchable power domain drives a signal into an always-on domain. Why is an isolation cell placed at this boundary?
Choose one
Answer choices
- A. To increase the signal's clock frequency.
- B. To clamp the receiver input to a known safe value while the source is off or invalid.
- C. To translate C code into SystemVerilog.
- D. To eliminate every CDC requirement.