TUSB8020B
- Two-Port USB 3.0 Compliant Hub, USBIF TID#330000057
- USB 2.0 Hub Features
- Multi-Transaction Translator (MTT) Hub: Two Transaction Translators
- Four Asynchronous Endpoint Buffers Per Transaction Translator
- Supports Battery Charging
- CDP Mode (Upstream Port Connected)
- DCP Mode (Upstream Port Unconnected)
- DCP Mode Complies With Chinese Telecommunications Industry Standard YD/T 1591-2009
- Support D+/D– Divider Mode
- Supports Operation as a USB 3.0 or USB 2.0 Compound Device
- Per Port or Ganged Power Switching and Overcurrent Notification Inputs
- OTP ROM, Serial EEPRO,M or I2C/SMBus Slave Interface
for Custom Configurations:
- VID and PID
- Port Customizations
- Manufacturer and Product Strings (not by OTP ROM)
- Serial Number (not by OTP ROM)
- Application Feature Selection Using Terminal Selection or EEPROM/ or I2C/SMBus Slave Interface
- Provides 128-Bit Universally Unique Identifier (UUID)
- Supports On-Board and In-System OTP/EEPROM Programming Through the USB 2.0 Upstream Port
- Single Clock Input, 24-MHz Crystal or Oscillator
- No Special Driver Requirements; Works Seamlessly on any Operating System With USB Stack Support
- 48-Pin HTQFP Package (PHP)
The TUSB8020B is a two-port USB 3.0 compliant hub. It provides simultaneous SuperSpeed USB and high-speed/full-speed connections on the upstream port and provides SuperSpeed USB, high-speed, full-speed, or low-speed connections on the downstream ports. When the upstream port is connected to an electrical environment that only supports high-speed or full-speed/low-speed connections, SuperSpeed USB connectivity is disabled on the downstream ports. When the upstream port is connected to an electrical environment that only supports full-speed/low-speed connections, SuperSpeed USB and high-speed connectivity are disabled on the downstream ports.
The TUSB8020B supports per port or ganged power switching and overcurrent protection.
An individually port power controlled hub switches power on or off to each downstream port as requested by the USB host. Also when an individually port power controlled hub senses an overcurrent event, only power to the affected downstream port will be switched off.
A ganged hub switches on power to all its downstream ports when power is required to be on for any port. The power to the downstream ports is not switched off unless all ports are in a state that allows power to be removed. Also when a ganged hub senses an overcurrent event, power to all downstream ports will be switched off.
The TUSB8020B downstream ports provide support for battery charging applications by providing battery charging connected downstream port (CDP) handshaking support. It also supports a dedicated charging port (DCP) mode when the upstream port is not connected. The DCP mode supports USB devices which support the USB Battery Charging and the Chinese Telecommunications Industry Standard YD/T 1591-2009. In addition, an automatic mode provides transparent support for BC devices and devices supporting Divider Mode charging solutions when the upstream port is unconnected.
The TUSB8020B provides terminal strap configuration for some features including battery charging support, and also provides customization though OTP ROM, I2C EEPROM or through an I2C/SMBus slave interface for PID, VID, and custom port and phy configurations. Custom string support is also available when using an I2C EEPROM or the I2C/SMBus slave interface.
The device is available in a 48-pin HTQFP package and is offered in a commercial version (TUSB8020B) for operation over the temperature range of 0°C to 70°C and in an industrial version (TUSB8020BI) for operation over the temperature range of –40°C to 85°C.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TUSB8020B Two-Port USB 3.0 Hub datasheet (Rev. C) | PDF | HTML | 2017/6/22 | ||
| 應用說明 | High-Speed Layout Guidelines for Signal Conditioners and USB Hubs (Rev. A) | PDF | HTML | 2026/1/8 | |||
| 設計指南 | 2-Port USB 3.0 Hub (TIDA-00287) | 2014/8/1 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
TUSB8020BEVM — TUSB8020BEVM：汽車雙埠 USB 3.0 集線器評估模組
TI TUSB8020BEVM 是一款單一裝置的功能板設計，同時實作了 USB 3.0 集線器與 USB 2.0 集線器。EVM 的 USB 連接埠可支援 SuperSpeed (SS) 和 USB 2.0 (HS、 FS 和 LS) 操作。此 EVM 適用於評估系統相容性，開發選用 EEPROM 韌體和驗證互通性。此 EVM 還可以作為 TUSB8020B 的實作硬體參考設計。
TIDA-00287 — 雙埠 USB 3.0 集線器參考設計
此經過驗證的參考設計為一款符合 USB 3.0 標準的二埠集線器。 其可同時在上游埠提供 SuperSpeed 與高速/全速連線，並可在下游埠提供 SuperSpeed、高速、全速或低速連線。
集線器設計可為每個下游埠提供電源控制，以及過電流保護和 ESD 防護。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| HTQFP (PHP) | 48 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。