INTRODUCTION 1
1.0 Introduction
1.1 Description
The AU9381 is a highly integrated single chip USB flash disk controller. It provides the most
cost effective bridge between USB enabled PC and NAND type flash memory. AU9381 can
be used as a removable storage disk in enormous data exchange applications between PC,
Macintosh, laptop and workstation. It can also be configured as a bootable disk for system
repairing .
The AU9381 can work with 1 to 8 NAND type flash memory chip with the combination of
any popular flash memory type - 8M, 16M, 32M, 64M and 128M. Additional features
include write protection switch, activity LED and password protected security .
The AU9381 integrated 48MHz PLL, 3.3V regulator, power on reset circuit and a power
switch for flash memory power control.
1.2 Features
Fully compliant with USB v1.1 specification and USB Device Class Definition for
Mass Storage, Bulk-Transport v1.0
Work with default driver from Windows ME, Windows 2000, Windows XP, Mac
OS 9.1, and Mac OS X. Windows 98se is supported by vendor driver from Alcor.
Multiple FIFO implementation for concurrent bus operation
64-pin package supports to 8 pieces NAND Flash memory chip; total capacity
reaches to 2G byte when working with 1G bit mono dies chip.
48-pin package supports to 4 pieces NAND Flash memory chip; total capacity
reaches to 1G byte.
Support mixed different size NAND Flash
Vendor ID, product ID and strings can be customized by utility software from Alcor
Can be configured to support dual partitions with dynamic logic disk space
allocation.
Security function supported with password protection
LED for bus activity monitoring
Runs at 12MHz, built-in 48 MHz PLL
Built-in 3.3V regulator
Built-in power switch and power management circuit to achieve 500uA suspend
current required by USB specification.
Built-in power on reset circuit
