VR2-0562
① SA Source
- Source: 開啟完整 SA 文章
- Section:
Bi-directional SerDes for Scale-Up - Line hint:
661
Context Before
The solution to this problem is the use of a hybrid at each end of the wire. Without a hybrid, there will be self-interference at the local RX because both the local TX and local RX are being transmitted along the same wire:
B0+A0=BA0
Evidence
An inverted copy of the local TX must therefore be generated at the local RX for proper echo cancellation:
Context After
B0+A0=BA0+(−A0)=B0
The diagram below illustrates this dynamic:
② Atomic Claim
因此 local RX 必須產生 local TX 的 inverted copy，才能進行正確的 echo cancellation。
- Epistemic Mode:
ASSERTED - Mapping Status:
PARTIAL
③ Semantic Frame
{
"attribute": "UNSPECIFIED_ATTRIBUTE",
"context_nodes": [],
"entity": {
"id": "04_knowledge_base/Echo cancellation",
"label": "echo cancellation"
},
"frame_type": "ATTRIBUTE",
"qualifiers": {
"condition_text": null,
"numeric_mentions": [],
"temporal_mentions": []
},
"value": {
"numeric_mentions": [],
"value_text": "因此 local RX 必須產生 local TX 的 inverted copy，才能進行正確的 echo cancellation。"
}
}④ Canonical Entity Mapping
| Role | Surface Label | Canonical Target |
|---|---|---|
| entity | echo cancellation | 04_knowledge_base/Echo cancellation |
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。