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yakumo_hypersound_car [2005/11/03 23:13] manuel created |
yakumo_hypersound_car [2014/01/16 20:08] (current) |
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I bought this car mp3 (MP3-CD/MMC/SD/USB/radio) player during summer of 2005. | 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. | It was relatively cheap, and most importantly, it had a SD/MMC card slot. | ||
+ | |||
+ | Yakumo has a German-speaking support forum here:\\ | ||
+ | http://forum.yakumo.de/german/index.php?t=thread&frm_id=123& | ||
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. | 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. | ||
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When this happens, pressing the reset button brings it back to life, but of course the radio station memory keys loose their information... | When this happens, pressing the reset button brings it back to life, but of course the radio station memory keys loose their information... | ||
+ | ===== Whats Inside? ===== | ||
Here are some misc stuff I found out about the unit: | Here are some misc stuff I found out about the unit: | ||
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* The USB/MMC/SD seems to be controlled by a board with | * The USB/MMC/SD seems to be controlled by a board with | ||
* SST 39VF800A | * SST 39VF800A | ||
+ | * "Multi Purpose Flash" memory | ||
+ | * http://www.sst.com/products.xhtml/parallel_flash/39/x16/SST39VF800A | ||
+ | * http://www.sst.com/downloads/datasheet/S71117.pdf | ||
+ | * 512K x 16 (8MBit) | ||
* Samsung K4S161622H | * Samsung K4S161622H | ||
+ | * http://www.samsung.com/Products/Semiconductor/DRAM/SDRAM/SDRAMcomponent/16Mbit/K4S161622H/K4S161622H.htm | ||
+ | * Datasheet: http://www.samsung.com/Products/Semiconductor/DRAM/SDRAM/SDRAMcomponent/16Mbit/K4S161622H/ds_k4s161622h_rev15.pdf | ||
+ | * 512K x 16Bit x 2 Banks SDRAM ==> 1Mx16 | ||
* Telechips TCC720A | * Telechips TCC720A | ||
* Appears to be a MP3 decoder chip, based on a ARM940T | * Appears to be a MP3 decoder chip, based on a ARM940T | ||
* http://www.telechips.com/product/product_mp3_tcc72x.htm | * http://www.telechips.com/product/product_mp3_tcc72x.htm | ||
+ | * apparently, the datasheet is not publicly available | ||
* has an on-chip stereo DAC | * has an on-chip stereo DAC | ||
* can interface: IDE, USB, IrDA, SRAM, DRAM, Flash, ... | * can interface: IDE, USB, IrDA, SRAM, DRAM, Flash, ... | ||
* has a JTAG interface. | * has a JTAG interface. | ||
+ | * The interface board thats piggy-backed onto the board with the Flash/DRAM/TC720 has | ||
+ | * a SD/MMC card slot | ||
+ | * the USB connector | ||
+ | * two voltage regulators: | ||
+ | * a 7805 LDO voltage regulator | ||
+ | * a SAC15x0 (x is not readable, but probably a 0) | ||
+ | * Up&Down Multi Voltage Regulator | ||
+ | * can deliver up to 1000mA | ||
+ | * more info here: http://www.cosmodesign.com/english/analog/udmvreg.htm | ||
+ | * and a WM8725 (WM8725GED) stereo audio DAC | ||
+ | * http://www.wolfsonmicro.com/products/digital_audio/dacs/WM8725/ | ||
+ | * Datasheet: http://www.wolfsonmicro.com/uploads/documents/WM8725.pdf | ||
+ | |||
+ | * The CD Drive takes up the most space, but can be removed quite easily with just four screws and one flat cable (24pin). It was made by Komec | ||
+ | * http://www.komec.com.cn/eabout.htm | ||
+ | * Seems to be a CDX-100 Series. (Although I can't exactly identify which one). http://www.komec.com.cn/eproduct.asp?classid=&Page=1 | ||
+ | * It uses a Toshiba TC94A14 chipset | ||
+ | * http://www.semicon.toshiba.co.jp/openb2b/websearch/productDetails.jsp?partKey=TC94A14FA | ||
+ | * Datasheet: http://www.alldatasheet.com/datasheet-pdf/pdf/TOSHIBA/TC94A14FA.html | ||
+ | |||
+ | ===== Pictures ===== | ||
+ | |||
+ | While taking it apart, I took lots of pictures: http://projects.varxec.net/images/yakumo/gal/yakumo_car_mp3_galleryidx.html \\ | ||
+ | (I also put it back together, and it still works 8-) ) | ||
+ | |||
+ | ===== Where to Buy ===== | ||
+ | |||
+ | Where to buy: | ||
+ | |||
+ | * http://www.amazon.de/exec/obidos/ASIN/B0009MZ7P2/302-7243173-7480049 | ||
+ | * http://www.reichelt.de OrderNo: YAK HYPERSOUND C |