USB4 version2 Gen4 by ryu-kazuho

40 Gbps PAM3 SerDes lane

Host router TX → Type-C channel → device router RX
40 Gbps / lane PAM3 −1 · 0 · +1 25.6 GBd 11b → 7T UI 39.06 ps Nyquist 12.8 GHz 2 lanes = 80 Gbps asym. 120 / 40
11-bit word #000000000000
→ 7 trits
t = 0.000 ns
Drag to orbit · right-drag to pan · scroll to zoom · click a block, the cable or a scope for details. Space pause · 1–5 views · R auto-rotate
Controls
+10−1
Channel & equalization
Eye height · worst receiver

Display
Quality
— fps

USB4 version2 Gen4 by ryu-kazuho

Version 1.0

Security & privacy

How to use

Keyboard shortcuts

Space 1–5 R L I Esc

Contributors: ryu-kazuho, Claude Code (Anthropic)

© 2026 ryu-kazuho. All rights reserved.

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