High-Speed Serial Interface: Why the World Moved Beyond Parallel
High-Speed Serial Interface Why Serial Interface? Summary of Parallel Interface Limitations 1 2 3 4 5 6 Parallel (8-bit @ 1GHz) Serial (1-bit @ 8GHz) ├─ Requires 9+ pins ├─ Requires 2 pins (Diff Pair) ├─ Severe skew issues ├─ No skew issues ├─ High EMI ├─ Low EMI (differential signal) ├─ High board complexity ├─ Simple board └─ Limited high-speed scaling └─ Easy high-speed scaling Paradigm Shift “Multiple slow lanes” → “One fast lane” ...