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====== Yakumo Hypersound Car ======

I bought this car mp3 (MP3-CD/MMC/SD/USB/radio) player during summer of 2005.
It was relatively cheap, and most importantly, it had a SD/MMC card slot.

This car radio was also sold in a near-identical version by Aldi-Sued in Germany under the name "Tevion ...???" but without a remote control.

It has the ability to record from radio/line in/CD/... and encode to MP3 in real-time. (Nice for recording from radio).

It appears that there's one bug, namely that the CD drive sometimes stops reacting. When this happens, it wont accept/eject/play CDs.
When this happens, pressing the reset button brings it back to life, but of course the radio station memory keys loose their information...


Here are some misc stuff I found out about the unit:
  * The Main Board uses a ST7 microcontroller: ST72F321. 
     * Datasheet here: http://www.st.com/stonline/books/pdf/docs/7599.pdf
     * Forum here: http://mcu.st.com/mcu/modules.php?mop=modload&name=Splatt_Forums&file=viewforum&forum=1
  * The USB/MMC/SD seems to be controlled by a board with
     * SST 39VF800A
     * Samsung K4S161622H
     * Telechips TCC720A
       * Appears to be a MP3 decoder chip, based on a ARM940T
       * http://www.telechips.com/product/product_mp3_tcc72x.htm
       * has an on-chip stereo DAC
       * can interface: IDE, USB, IrDA, SRAM, DRAM, Flash, ...
       * has a JTAG interface.

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