1. Technology Institute Of Israel – Digital Lab

2. Presentation date: **/**/2002. Executers: Raveh Yariv & Frenkel Oren. Technion supporter: Eran Pinchasov. Supported by: SanDisk Israel.

3. Audio is compressed to MP3 only by software (pc). Only digital audio format can be converted to MP3 Listening to MP3 formats requires additional portable device. Portable device which encode & decode MP3.

4. 1.Analog Audio compress using pc (ISA/PCI card). AD/DA Converter ALTERA SanDisk MMC Analog Audio

5. 2. Portable device which records and plays MP3 AD/DA Converter MP3 Encoder/ Decoder ALTERA MMC

6. PHILIPS CODEC 24 Bit YMPC3001 Yountel Encoder/ Decoder ALTERA FLEX 10K100 Volume Control Flash memory SanDisk Control Panel Head Phones Audio Input 51732 Battery DC-DC Converter 3.3V 5 3

10. ALTERA TOP App_add (MMC_host) Interface_top Decompose UnitControl UnitCompose Unit MMC Init UnitControl FSMYMPC Init UnitCounters MMC rd UnitMMC wr UnitYMPC wr UnitYMPC rd Unit

11. Plans: An electrical design of the board. A complete electrical board contains all components. A complete VHDL unit which records MP3 to the MMC card. A complete VHDL unit which plays MP3 from the MMC card. A board which records & plays MP3 music.

12. Results: An electrical design of the board. A complete electrical board contains all components. A complete VHDL unit which records MP3 to the MMC card. A complete VHDL unit which plays MP3 from the MMC card. A complete simulation of the Interface_top Unit. A partial simulation of the ALTERA_top. Due to the YMPC problem the board is not running…

13. Problems: Interoperability with MMC Host. YMPC does not react. Conclusions: It is better to find a second source for critical chips.

14. Problems: Yountel is a small Korean company. The YMPC chip arrived a bit late. Conclusions: Try to avoid working with small companies abroad. Finding a second source for critical chips.

15. Technology Institute Of Israel – Digital Lab