AU9254A21 View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

AU9254A21

single chip 4-port USB hub controller

Unspecified 

1.0 Introduction

1.1. Description

The AU9254A21 is an integrated single chip USB hub controller designed for the emerging

industry-standard Universal Serial Bus (USB). The AU9254A21 supports four USB

downstream ports. Each downstream port has power switch control, and over-current

sensing.

Single chip integration makes the AU9254A21 the most cost effective stand-alone USB

hub solution available in the market. Downstream ports can be used to connect various

USB peripheral devices, such as USB printers, modems, scanners, cameras, mice, or

joysticks to the system without adding external glue logic.

1.2. Features

• Fully compliant with the Universal Serial Bus Specification, version 1.1.

• USB hub design is compliant with Universal Serial Bus Hub Specification, revision

1.1.

• Single chip integrated USB hub controller with embedded proprietary processor.

• Supports four bus-powered/self-powered downstream ports.

• Built-in 3.3v voltage regulator allows single +5V operating voltage, resulting in

reduced overall system cost.

• Runs at 12Mhz frequency.

• 28-pin SSOP package, both normal size (body size 209 mil) and smaller size (body

size 150 mil) are available.

INTRODUCTION

1

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