基于 Realtek 全栈 USB / 网络 / 读卡方案，做一款多接口扩展坞——3×Type-C（100W PD 充电 + 数据传输）、1×USB-A 3.2、1×千兆网口、1×USB 3.2 SD 读卡器、1×HDMI 输出。面向笔记本 / 平板 / 手机一线扩容。A multi-port dock built on Realtek's full USB / networking / card-reader stack — 3×Type-C (100W PD + data), 1×USB-A 3.2, 1×GbE, 1×USB 3.2 SD reader, 1×HDMI. One cable to expand laptops, tablets and phones.
整机以一颗 Realtek USB-C PD 控制器统筹供电与 DP Alt-Mode，再由 USB 3.2 Hub 向下分配数据通道给网口、读卡器与下行口。One Realtek USB-C PD controller governs power and DP Alt-Mode; a USB 3.2 hub fans data out to the Ethernet, card reader and downstream ports.
数据、供电、网络、读卡四路全部选用 Realtek，BOM 统一、固件协同好、单家供货。具体型号与封装以原厂 datasheet 为准。Data, power, networking and card-reading all from Realtek — one BOM, shared firmware, single-source supply. Exact part numbers and packages per vendor datasheet.
USB-C PD 控制器，集成 CC / PD 3.0 与 DP Alt-Mode 切换，负责 100W 充电透传与视频链路。USB-C PD controller with CC / PD 3.0 and DP Alt-Mode mux — 100W charging passthrough and the video path.
USB 3.2 Gen1/Gen2 多端口 Hub 控制器，向下提供 USB-A 3.2、读卡器与网口的共享上行通道。USB 3.2 Gen1/Gen2 multi-port hub — the shared 10Gbps upstream for USB-A, reader and Ethernet.
USB 3.0 转千兆以太网控制器，提供 RJ45 千兆网口，兼容 10/100/1000M。USB 3.0 to Gigabit Ethernet controller — the RJ45 GbE port, 10/100/1000M.
USB 3.2 SD/MMC 读卡器控制器，支持 SD/SDHC/SDXC，做独立的 SD 读卡器口。USB 3.2 SD/MMC reader controller — the dedicated SD slot, SD/SDHC/SDXC.
一个扩展坞，把一线扩容做齐。One dock, fully expanded.
| 接口Port | 数量Qty | 说明Notes |
|---|---|---|
| Type-CType-C | 3 | 100W PD 充电 + USB 3.2 数据传输；其中 1 路复用 DP Alt-Mode 引出 HDMI。100W PD charging + USB 3.2 data; one shares DP Alt-Mode for HDMI. |
| USB-A 3.2USB-A 3.2 | 1 | 下行数据口，来自 RTS5411 Hub。Downstream data port from the RTS5411 hub. |
| 千兆网口 (RJ45)GbE (RJ45) | 1 | RTL8153B，USB 转千兆，10/100/1000M 自适应。RTL8153B, USB to Gigabit, 10/100/1000M auto. |
| SD 读卡器SD reader | 1 | RTS5261，USB 3.2，支持 SD/SDHC/SDXC。RTS5261, USB 3.2, SD/SDHC/SDXC. |
| HDMIHDMI | 1 | 来自 Type-C DP Alt-Mode（详见上方 HDMI 说明），典型 4K@30Hz（以链路预算为准）。From Type-C DP Alt-Mode (see HDMI note) — typical 4K@30Hz, link-budget dependent. |
为什么这套方案值得做。Why this build is worth it.
供电、数据、网络、读卡四路同家，选型 / 备货 / 固件协同都更简单。Power, data, networking and reader from one vendor — easier sourcing and firmware.
RTS5453 做 100W PD 透传，笔记本插上即满速充电，不降数据带宽。RTS5453 passes 100W PD straight through — full-speed charging without throttling data.
Hub + 读卡器 + 网口共用上行，多设备并发不发愁。Hub, reader and Ethernet share one upstream — concurrent devices stay smooth.
QFN 小封装 + 成熟参考设计，适合铝合金外壳的便携形态。Small QFN packages and proven references fit a portable aluminium-shell form factor.
这些场景，一根线就够。One cable covers these scenes.
充电 + 网口 + 读卡 + 投屏一次接好。Charge + LAN + reader + display in one plug.
HDMI 直连投影 / 大屏，拔插即用。HDMI straight to projector / big screen, plug and go.
给瘦终端补网口、读卡与下行口。Add LAN, reader and ports to thin clients.
配铝合金外壳，随身带的扩展能力。Paired with an aluminium shell, expansion on the go.
从参考设计到小批量，我们能把这套 Realtek 方案落地。留下信息，我们直接对接。From reference design to small batch, we can build this Realtek solution. Leave a note and we'll reach out.