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Archive protocol PDFs on disk; HDMI 2.0/FRL TI layout as VENDOR (2.81.0).

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INDEX.md lists cites. PDFs gitignored. HDMI 1.4 TMDS Zdiff stays UNKNOWN. pcbsync not packed.
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standards/protocol-specs/INDEX.md
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# Protocol specification archive
PDFs live **on disk** in this folder. They are **not** committed to GitHub/Gitea (license). See `.gitignore` `standards/protocol-specs/*.pdf`.
Mirror: agent-store `internal/protocol-specs/`.
TI files are **VENDOR / PHY**, never HDMI Forum STANDARD. `https://pcbsync.com/hdmi-pcb-layout/` is a blog — **not packed**.
| Filename | Title | Revision | Cited by (physical / notes) | Class |
|---|---|---|---|---|
| `usb_20.pdf` | Universal Serial Bus Specification | Revision 2.0, April 27, 2000 | `usb2-ls-dpair`, `usb2-fs-dpair`, `usb2-hs-dpair` (data_rate, pull-up/down, VBUS, cable Z0, HS PCB *should*) | STANDARD |
| `USB_2.0_Electrical_Compliance_Test_Spec.pdf` | USB 2.0 Electrical Compliance Test Specification | Version 1.08, April 2026 | `usb2-hs-dpair` DCR 17/23/13 Ω, HS edges | STANDARD |
| `USB Type-C Spec R2.5 - March 2026.pdf` | USB Type-C Cable and Connector Specification | Release 2.5, March 2026 | `usb-c-receptacle` Rp/Rd/Ra, charger VBUS Fig 4-39, zOPEN, tCCDebounce, tVBUSON | STANDARD |
| `USB Type-C Spec R2.0 - August 2019.pdf` | USB Type-C Cable and Connector Specification | Release 2.0, August 2019 | `usb-c-receptacle` Source CC shall-detect Table 4-32 (vRd/vOPEN/vRa) | STANDARD |
| `USB_Type-C_Functional_Test_Spec.pdf` | USB Type-C Functional Test Specification Chapters 4 and 5 | Revision 0.91, March 3, 2024 | `usb-c-receptacle` cable IR drop 250/500 mV OPTIONAL CABLE | STANDARD (OPTIONAL CABLE) |
| `DVI_Specification_Revision_1.0.pdf` | Digital Visual Interface (DVI) | Revision 1.0, 02 April 1999 | `dvi-1.0-tmds` termination / Zdiff | STANDARD |
| `802.3-2012_section2.pdf` | IEEE Std 802.3-2012 IEEE Standard for Ethernet (Section Two) | 2012 | `100base-tx-mdi`, `100base-fx-pcb` | STANDARD |
| `802.3-2015_SECTION1.pdf` | IEEE Std 802.3-2015 IEEE Standard for Ethernet (Section One) | 2015 | `10base-t-mdi` Clause 14 | STANDARD |
| `802.3-2012_section3.pdf` | IEEE Std 802.3-2012 IEEE Standard for Ethernet (Section Three) | 2012 | `1000base-t-mdi` Clause 40; `1000base-x-pcb` Clause 36 | STANDARD |
| `CEC_HDMI_Specification.pdf` | High-Definition Multimedia Interface Specification | Version 1.3, June 22, 2006 | HDMI `cec*` fields (Supplement 1 + Table 4-27). **Not** used for TMDS/FRL Zdiff | STANDARD (CEC only) |
| `tmds1204.pdf` | TMDS1204 12Gbps HDMI Hybrid Redriver | SLLSF57A – August 2022 / revised April 2024 | `tmds1204-hdmi-sink`, `tmds1204-hdmi-source`; also HDMI **2.0 / FRL** layout as VENDOR/PHY | **VENDOR / PHY** |
| `slla633.pdf` | TMDS_CLOCK/FRL_Data Detection Design in HDMI Sink Applications TMDS1204 | SLLA633 – May 2024 | `tmds1204-*` `sigdet_wakeup` PHY_DEPENDENT (no layout ohms) | **VENDOR / PHY** |
| `HDMI-FRL-Software-Datasheet-61W6169600.pdf` | HDMI 2.1 FRL Compliance Test Solution Datasheet (Tektronix) | (on file; 4 pages) | **not packed** — test-equipment datasheet, not HDMI Forum Adopter | archived only |
Duplicates on Desktop (same MD5, not stored twice here): `USB2_Electrical_Compliance.pdf`, `DVI_Spec_v1.0.pdf`, `USB_TypeC_Functional_Test.pdf`.