1. PDR- Digital Audio Recorder/Player Brian Cowdrey Mike Ingoldby Gaurav Raje Jeff Swetnam

2. Objective Successfully encode/decode MP3 Play/Stop a song Select track and fast forward/rewind Read off from Compact Flash Card Display song title and time Voice Recording in MP3 Format Equalizer Controls

3. Hardware Overview ROM MCU RAM DAC D/E ADC Buttons Compact Flash LEDs MP3 Enc/Dec LCD

4. Software Overview OS LCDButtons DSP Recording Supply CF to Memory Supply data to Dec/Enc Recording Buttons User Int. Bios

5. Microprocessor (C8051F320)

6. MP3 Encoder/Decoder (MAS 3587F)

7. Project Schedule

8. Milestones CDR Research/Design components PCB design layout Order First PCB Milestone I Test Microprocessor Implement Monitor Program LCD/User Interface

9. Milestones (contd.) Milestone II Program Encoder/Decoder Program OS to Combine all programs Redesign original PCB design Expo Possible extensions Final testing/debugging

10. LCD Display/User Interface Monochromatic graphical display 122x32 pixels 8-bit interface with built in controller Display song title and play time (possibly ID3 tag) Show menu corresponding to user interface buttons

11. Division of Labor Jeff  MP3 encoder/decoder  Signal processing Brian  LCD  User interface Mike  Microprocessor  USB interface Gaurav  Compact flash  FAT16 file system

12. Risks/Contingency Plan Risk: Errors on PCB layout Solution: Reorder new PCB board Risk: MP3 Encoding/Decoding Errors Solution: Record and play back raw data as wav files Risk: Problems with USB interface Solution: Switch to a serial port Risk: Graphical LCD errors Solution: Switch to character LCD

13. Compact Flash Card Small removable mass storage device Connected to microprocessor with a 8 bit data bus Microprocessor interfaces w/ CF card with registers on CF card

14. FAT 16 Directory structure that lists files and locations on CF card Compatible on many platforms (Windows, Linux, Mac OS) User friendly

15. Possible Additions FM remote control Equalizer Battery Power Real-time signal processing

16. Marketability Target Market: Teenagers/College Students Directly compete with Apple’s IPOD Additional recording capabilities

17. Impact on Society May increase illegal music downloads Drive down prices for other MP3 players in the market

18. Cost Analysis PCB (2)$300 Microprocessor$40 MP3 Encoder/Decoder $35 LCD Display$30 Compact Flash Card$20 RAM$5 Miscellaneous Parts$20 ------------------------------------------------------------------------- TOTAL APPROX. COST$450

19. Expected Yield Selling Price Per Unit = $50 Mass Produced PCB $8 Microprocessor$1 MP3 encoder/decoder$1 Misc. parts$2 Labor$5 LCD$3 Total = $20 Profit=$30 per unit 150% yield

20. Any Questions?