Hardware interview practice
Explain the move from parallel buses to high-speed serial links
A board interface needs much more aggregate bandwidth without adding hundreds of matched signal pins. Which change best explains the modern high-speed-bus trend?
Choose one
Answer choices
- A. Widen the single-ended parallel bus indefinitely because lane-to-lane skew falls as the bus becomes wider.
- B. Use fewer differential serial lanes at higher rates, recover or forward timing, and add encoding/equalization to manage skew, loss, and signal integrity.
- C. Remove clock recovery and equalization because serial signaling has no timing or channel-loss limits.
- D. Lower every lane's signaling rate and rely only on software compression to increase physical link bandwidth.