1. USB Digital Audio Player Using ST92163 By Microcontroller DivisionVersion 1.2 / November 2000

2. 2 General Features Supported Audio Decoder :  STA015 in MP3 decoder mode Supported Cards :  Compact Flash Card  SmartMedia Card  MultiMedia Card USB 1.1 Full Speed interface Supported OS :  Windows 98 and 98SE  Windows 2000  Windows Millennium  Mac OS Integration into :  Windows Explorer as a Removable disk  User specific applet  Mac OS file system Cost / Flexibility Tradeoff :  Lowest cost using customer Mask OR  State of the art flexibility : OTP Full Package including :  Demonstration Board  Microcontroller Firmware  PC Kernel Driver  PC Exemple Applet Available December 2000!

3. 3 Target Markets Portable Digital Audio Players  Working from the USB power when connected  Working on low power from battery when disconnected Car Radio with Digital Audio Playback  Device can be removed from the car and connected to the PC for music download  With optional MP3CD reader Home Digital Audio Players (Jukebox)  Connects to the Home Stereo Amplifier  Can be linked to the PC for music download  With optional MP3CD reader

4. 4 System Architecture 12Mbit/s ST92163 350KByte/s 150KByte/s 250KByte/s STA015 + DAC + AMP STA015 + DAC + AMP SCI / I2C Audio * Even though the board is designed to access to any of the CF, SMC or MMC, a different software is needed to handle each different card type * USB connectivity to the PC and STA015 control are 2 different operating modes running at different times

5. 5 Supported Cards SmartMedia Card (SMC)  SSFDC compliant (ECC and Status Read)  4 to 64MByte support, 128MByte ready  3V supply from USB / Regulator  Speed : 250KByte/s Compact Flash Card (CF)  8bit Memory Mode  5V supply directly from USB  Speed : 350KByte/s MultiMedia Card (MMC)  MMC MultipleBlock mode  CRC support (Read & Write)  3V supply from USB / Regulator  Speed : 150KByte/s

6. 6 USB Interface Full Speed (12MBit/s) USB Bulk transfer Bus Powered device Complying to the USB Mass Storage Class specifications  Bulk Only Transfer (BOT) 1 Control Endpoint 1 Bulk In Endpoint 1 Bulk Out Endpoint  Reduced Block Command (following USB Class specification for Flash Cards) Fully USB Plug Tested solution  ST92163 on USB integrators list  suspend current <500µA  Active current <100mA

7. 7 PC Side Integrates into windows explorer or user specific applet Supports all USB enabled operating systems  Support for windows 98 and 98SE ST provides class driver DLL and kernel SYS file  Support for windows 2000, millenium and MAC OS* USB mass storage class support native in the OS *CF and SMC only on MAC OS

8. 8 Deliverables Demonstration hardware : Software package  Microcontroller firmware  Windows 98 / 98SE drivers  Exemple of user specific applet Full documentation SMC Connector USB Connector ST92163 Socket MMC Connector CF Connector Headphone Connector Line Out STA015 Demoboard ST92163 Mass Storage Demoboard

9. 9 Schedule Hardware : W47 PC softwares :  Integration in Windows 98 / 98SE explorer :W49  Integration in Windows 2000 explorer :Now  Integration in Windows Millenium explorer :Now  Integration in MAC OS file system :Now  Exemple User Specific Applet :Now except on Millenium Single Card Support :  SmartMedia Card :Now  Compact Flash Card :Now  MultiMedia Card :Now STA015 MP3 playback Support : W49