AU6472 - USB 2.0 Single LUN Multiple Flash Card Reader Controller

The AU6472 is designed to deliver outstanding performance for data transmission between USB and compatible flash card interface. It supports USB 2.0 high-speed transferring to various types of flash media cards such as SD, MMC, xD and MS.Besides, the AU6472 supports several operating systems, including MS Windows,LINUX and Mac OS.

Main Features:

General

• Fully compatible with USB2.0 High Speed and backward compatible with USB1.1 specifications
• Supports multiple flash card interfaces, including SD/MMC/MS/xD/MicroSD/M2.
• Supports two share ping LUNs
       ▪ 1st LUN support: SD/MMC/MS/xD
       ▪ 2nd LUN support: MicroSD/M2
• Supports both Windows and Mac OS
       -Default Mass Storage Class driver comes from Windows
         ME/2000/XP/Vista/Windows 7 and Mac OS
       -Windows 98 is supported by vendor driver from Alcor

Compliance

• Complies with USB Device Class Definition for Mass Storage and Bulk-Transport V1.0
• Complies with Secure Digital Card (SD) specification up to ver. 3.0(SDXC)
• Complies with MultiMedia Card (MMC) specification up to ver. 4.4 and supports 8-bit data bus.
• Complies with Memory Stick (MS) specification up to ver. 1.43
• Complies with Memory Stick PRO (MS Pro) specification up to ver. 1.05
• Complies with Memory Stick PRO-HG (MS Pro-HG) specification up to ver. 1.03 and supports 8-bit data bus in first LUN.
• Complies with Memory Stick XC (MSXC) specification up to ver. 1.00-00
• Complies with Memory Stick Interface Guideline for PC peripheral devices with Memory Stick Slot ver.1.16-00
• Support xD spec up to ver. 1.2.

Benefit

• 1K bytes of ping-pong FIFO buffs the data transmission between transmitter and receiver
• Integrated hardware DMA engine enhances overall performance of data transfers
• Supports power saving mode to reduce power consumption
• User-friendly Dynamic icon utility software can display icon message upon insertion/removal of compatible flash cards under Windows
• Optimizes performance via multiple sectors transfer
• Built-in 5V to 3.3V and 3.3V to 1.8V regulator offers customers lower BOM cost.
• Clock runs at 12MHz crystal

Application Diagram: