TUSB4020BI
- Two-port USB 2.0 hub
- USB 2.0 hub features:
- Multi-transaction translator (MTT) hub: two transaction translators
- Four asynchronous endpoint buffers per transaction translator
- Type C compatible
- 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
- D+/D– divider mode
- Per port or ganged power switching and overcurrent notification inputs
- OTP ROM, serial EEPROM, or I2C/SMBus
target 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 target 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, 24MHz crystal or oscillator
- No special driver requirements; works seamlessly on any operating system with USB stack support
- 48-pin HTQFP package (PHP)
The TUSB4020BI is a two-port USB 2.0 hub, which provides USB high-speed/full-speed connections on the upstream port and high-speed, full-speed, or low-speed connections on the two downstream ports. When the upstream port is connected to an electrical environment that supports high-speed and full-speed/low-speed connections, high-speed and full-speed/low-speed USB connectivity is enabled on the downstream ports. When the upstream port is connected to an electrical environment that only supports full-speed/low-speed connections, high-speed connectivity are disabled on the downstream ports.
The TUSB4020BI 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 is switched off.
A ganged hub switches on power to all the 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 is switched off.
The TUSB4020BI downstream ports provide support for battery charging applications by providing battery charging connected downstream port (CDP) handshaking support. The device 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 TUSB4020BI provides terminal strap configuration for some features (including battery charging support) and customization through OTP ROM, I2C EEPROM or an I2C/SMBus target interface for PID, VID, custom port and phy configurations. Custom string support is also available when using an I2C EEPROM or the I2C/SMBus target interface.
The device is available in a 48-pin HTQFP package and is offered in an industrial version 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 | TUSB4020BI Two-Port USB 2.0 Hub datasheet (Rev. E) | PDF | HTML | 2024/7/22 | ||
| 應用說明 | High-Speed Layout Guidelines for Signal Conditioners and USB Hubs (Rev. A) | PDF | HTML | 2026/1/8 | |||
| 應用說明 | ESD and Surge Protection for USB Interfaces (Rev. B) | PDF | HTML | 2024/1/11 | |||
| 應用說明 | TUSB4020BI Schematic Checklist | 2018/8/13 |
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)。
TUSB4020BPHPEVM — TUSB4020BPHPEVM 評估模組
德州儀器 TUSB4020B 評估模組是實作 USB 2.0 集線器的單一裝置功能電路板設計。EVM 的 USB 連接埠可支援 USB 2.0（HS、FS 及 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 TUSB4020B 的實作硬體參考設計。
TIDA-00845 — 具有電池短路保護的雙連接埠車用 USB 2.0 集線器參考設計
| 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。