[About Alcor Micro, Corp]

Description
AU6254 is a fully compliant with the USB 2.0 hub specification and is designed to work with USB host as a high-speed hub.Its built-in TT (Transaction Translator) allows system to benefit combinational performance under the unbalanced traffic condition.

FEATUREs
•  Fully compliant with USB Hub Specification version 2.0 and is also backward compatible with USB Hub specification 1.1.
•  Single chip USB 2.0 hub controller.
•  Supports four bus-powered/self-powered downstream ports.
•  Supports automatic switching between bus- and self-powered modes.
•  Cost effective design using one transaction translator for all downstream ports.
•  Two-color LED controls available for each downstream port to indicate the status of each device port.
•  Extra low power consumption.
•  On chip internal pull-up and meets USB bus power regain emend pull down resistors for all data line.
•  Built-in USB 2.0 transceiver.
•  Supports individual and gang modes of power management.
•  Built-in power switch control for over current sensing control.
•  Built-in 1.8V regulator for core logic.
•  Embedded in PLL (Phase Lock Loop) circuit for 12MHz operation precision
•  Supports external EEPROM interface for customized PID and VID
•  Available in two different form factors: 48-pin LQFP package and 64-pin LQFP package.