VR2R-0532_r1

VR2R-0532

① SA Source

• Source: 開啟完整 SA 文章
• Section: Bi-directional SerDes for Scale-Up
• Line hint: 442

Context Before

An inverted copy of the local TX must therefore be generated at the local RX for proper echo cancellation:

Evidence

(B0 + A0 = BA0 + (-A0) = B0)

Context After

While bidirectional signaling is being used for short-reach (less than 5mm) die-to-die interconnect, what stands out is that NVIDIA has extended this technology to longer reach transmission over copper backplane with a reach of at least 1m.

② Atomic Claim

Echo-cancellation 說明中的關係式為：(B0 + A0 = BA0 + (-A0) = B0)。

• Epistemic Mode: ASSERTED
• Mapping Status: PARTIAL

③ Semantic Frame

{
  "frame_type": "CLAIM_ONLY",
  "qualifiers": {
    "condition_text": "equation shown in source immediately after echo-cancellation explanation",
    "numeric_mentions": [],
    "temporal_mentions": []
  },
  "reason": "MATHEMATICAL_EXPRESSION_FROM_ECHO_CANCELLATION_EXPLANATION",
  "statement": "B0 + A0 = BA0 + (-A0) = B0"
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
—	—	—

⑤ Human Review

請在 Properties 逐項確認：

• 原文 → Atomic Claim 是否忠實
• Atomic Claim → Semantic Frame 是否忠實
• Canonical Entity mapping 是否正確
• Epistemic mode 是否保留原文語氣
• 最後選擇 review_action

Review state

Markdown 內文不是正式 approval。只有 Apply bridge 寫入的 Decision Ledger event 才是正式決策。