TI TUSB8041ARGCR

The TUSB8041A is a four-port USB 3.1 Gen 1 hub. This device can provide synchronous SuperSpeed and high-speed/full-speed USB connections on the upstream port, and SuperSpeed, high-speed, full-speed, or low-speed USB 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, the SuperSpeed USB connections on the downstream ports will be disabled. When the upstream port is connected to an electrical environment that only supports full-speed/low-speed connections, the SuperSpeed USB and high-speed connections on the downstream ports will be disabled.

The TUSB8041A supports per-port or grouped power switching and overcurrent protection, and also supports battery charging applications. As required by the USB host, a port power individually controlled hub switch powers on or off each downstream port. Similarly, when a port power individually controlled hub senses an overcurrent event, it only turns off the power to the affected downstream port. When power needs to be supplied to any port, a grouped hub switch turns on the power to all its downstream ports. The power to the downstream ports can only be turned off when all ports are in a state where the power can be removed. Similarly, when a grouped hub senses an overcurrent event, the power to all downstream ports will be turned off.

The TUSB8041A downstream ports can provide Battery Charging Downstream Port (CDP) handshake support to support battery charging applications. Without the upstream port connected, the device also supports the Dedicated Charging Port (DCP) mode. The DCP mode provides support for USB devices that support USB battery charging and comply with the China Telecom industry standard YD/T 1591 - 2009. In addition, without the upstream port connected, the TUSB8041A supports the Divider Charging Port mode (ACPx mode) and can automatically switch between all modes, starting from the ACP2 mode and ending with the DCP mode.

The TUSB8041A can provide pin-strapping configuration for some features including battery charging support, and can also provide customization support for PID, VID, custom ports, and physical layer configuration through OTP ROM, I²C EEPROM, or I²C/SMBus slave interface. When using the I²C EEPROM or I²C/SMBus slave interface, custom string support can also be provided. The device is packaged in a 64-pin RGC package, and the operating temperature range of the commercial version is from 0°C to 70°C.

• 4-port USB 3.1 Gen 1 hub
• USB 2.0 hub features
• Multi-Transaction Translator (MTT) hub: four transaction translators, each with two asynchronous endpoint buffers
• Battery charging support: D+/D- divider charging port (ACP1, ACP2) supported with upstream port disconnected or unconfigured; auto mode to switch between DCP and ACP supported with upstream port disconnected; Charging Downstream Port (CDP) mode (upstream port connected); Dedicated Charging Port (DCP) mode (upstream port disconnected); DCP mode compliant with China telecom industry standard YD/T 1591-2009
• USB 3.1 Gen 1 or USB 2.0 compound device support
• Per-port or ganged power switching with over-current notification input
• Four external downstream ports
• Vendor requests for I²C read/write with clock stretching on 100k I²C host support
• Custom configuration via OTP ROM, serial EEPROM, or I²C/SMBus controlled interface: VID and PID; port customization; manufacturer and product strings (not supported by OTP ROM); serial number (not supported by OTP ROM)
• Application feature selection via pin strapping, EEPROM, or I²C/SMBus slave interface
• 128-bit UUID
• Single clock input, 24MHz crystal or oscillator
• Downstream ports configurable for USB 2.0 only
• 64-pin QFN package (RGC)

• Computer systems
• Docking stations
• Monitors
• Set-top boxes