Optical Cable / Fiber Infrastructure Reference Design
An illustrative optical cable / fiber infrastructure reference design for the core / transport layer of the five-layer network architecture. Optical cable (G.652D single-mode), ODF distribution frames and splitters are passive, so this page is built around their electronic part: the smart ODF (eODF) management control board, with 4 port-ID reader sockets (reading patch cord electronic tags and driving port indicators), RS-485 subrack cascading (RJ45 1×2 + common-mode chokes + ESD), dual Ethernet / SFP management uplinks and a 12V supply. Each position is marked with the VOOHU parts available, recommended part numbers and package pinouts.
Illustrative PCB ⇄ Schematic
Illustrative top-side view arranged by functional zone (not the actual layout). Red numbered dots mark positions VOOHU can supply. Click a component on the board, an entry in the index below or a part in the schematic to see recommended parts and package pinouts on the right.
Illustrative port identification topology: the management MCU polls reader sockets J1–J4 over I²C / 1-Wire and GPIO, reading the patch cord electronic tag (eID) of every port on the adapter tray and driving the port indicators; the sockets' data lines and LED drive lines are protected by VOOHU ESD arrays D1–D4 (WHTA5V01P2C). J1 is shown with only 1 set of data lines and 1 set of LED lines; the other sockets are identical. Pull-up and current-limiting resistors are drawn as symbols without values.
Board bill of materials
Summarized by position; click any row to locate it on the board above.
| No. | Zone | Position | Ref. | VOOHU category | Recommended part | Availability |
|---|---|---|---|---|---|---|
| 01 | A Port ID readout | Port ID reader sockets ×4 (to adapter trays) | J1 J2 J3 J4 | — | — | Non-VOOHU |
| 02 | A Port ID readout | Reader port ESD arrays ×4 | D1 D2 D3 D4 | TVS ESD | WHTA5V01P2C | VOOHU |
| 03 | B RS-485 cascade | Plain RJ45 1×2 (RS-485 cascade IN / OUT) | J5 | RJ45 Connector | WH56I3288RGGG0121101 | VOOHU |
| 04 | B RS-485 cascade | RS-485 ESD ×2 | D5 D6 | TVS ESD | WHALD30E2B | VOOHU |
| 05 | B RS-485 cascade | RS-485 signal CMC ×2 | L1 L2 | Signal Line Common Mode Chokes | WHAC-4532A-601T0 | VOOHU |
| 06 | B RS-485 cascade | RS-485 transceivers ×2 | U2 U3 | — | — | Non-VOOHU |
| 07 | D Management MCU | Management MCU (with Ethernet MAC) | U1 | — | — | Non-VOOHU |
| 08 | D Management MCU | Flash | U5 | — | — | Non-VOOHU |
| 09 | D Management MCU | Port LED driver | U6 | — | — | Non-VOOHU |
| 10 | C Management uplink | Ethernet uplink RJ45 with integrated magnetics | J6 | RJ45 with Integrated Magnetics | SYT211Q066CD2A4D | VOOHU |
| 11 | C Management uplink | Uplink Gigabit PHY | U4 | Ethernet PHY | JL2101C-NI | VOOHU |
| 12 | C Management uplink | Optical uplink SFP cage + 20-pin connector | J7 | SFP+ Series | WH81-111-Y0017-1 | VOOHU |
| 13 | C Management uplink | SFP supply filter inductor | L3 | Molded Inductors | WHYTA0420 series | VOOHU |
| 14 | E 12V power | 12V power input | J8 | — | — | Non-VOOHU |
| 15 | E 12V power | Input TVS | D7 | — | — | Non-VOOHU |
| 16 | E 12V power | Power-line common-mode choke (EMI) | L4 | Power Line Common Mode Chokes | WHACM07A40R501 | VOOHU |
| 17 | E 12V power | Synchronous buck ×2 | U7 U8 | — | — | Non-VOOHU |
| 18 | E 12V power | Molded inductors ×2 (DC-DC) | L5 L6 | Molded Inductors | WHYTA0420 series | VOOHU |
Resources & downloads
Board bill of materials
Reference designators, zones, VOOHU categories, recommended parts and availability for all 18 positions. Opens directly in Excel.
Datasheet collection
Datasheet PDFs for the VOOHU parts recommended on this board.
Design files & footprint library
Schematic, PCB, and VOOHU part footprints and 3D models.
Coming soonRequest the optical cable / fiber infrastructure reference design full package
Includes the full-board position list, datasheets for the recommended VOOHU parts and position-by-position selection notes. For selection advice tailored to the uplink method, cascade interface or protection level of your smart ODF / fiber cabinet management board, please include it in your requirements. We reply within 24 hours on working days.
