自制MP3播放器---[經(jīng)典設(shè)計制作資料]
出處:xyzjob 發(fā)布于:2008-07-04 00:00:00 | 3409 次閱讀
yampp7 is a new portable MP3 player that uses Compact Flash or MultiMedia cards for storage of songs. You"ll get about 1 minute of playing time per MB on the memory card, if your songs are 128 kbps. The player is pretty small and the PCB has been designed to fit into a Teko "Soap" box. It features a 84*48 pixel graphical LCD display, similar to the displays used on Nokia 3310 cell phones. It"s designed to operate from rechargable battery cells, either from a single 3.6V Li-Ion cell (recommended), or from 3*1.2V Ni-Mh cells. With a 600 mA Li-Ion cell, the playing time is about 12 hours, but you can find Li-Ion cells up to 1200 mAh that will fit in the player, extending the playing time to about 24 hours It"s intended to be used with replacement Li-Ion cells for Mobile Phones, making it easy (and relatively cheap) to find a suitable cell. (I use mine with a cell for a Motorola V3688 Phone). It also features a USB interface for fast downloading of songs to the memory card, and for firmware updates The player uses a special filesystem called YADL (Yampp Advanced Disk Layout), which maximizes the capacoty of the memory card. It is playlist based and give the player a powerful but easy to use user interface
Processor The central part of the yampp-7 player is the Atmel mega161 CPU. It"s like a big-brother to the classic 8515 CPU that was used on the original yampp-3. It has 16 kB Flash and 1024 bytes internal SRAM, both double as much as on the 8515. It also features a bootloader option. This is been used in yampp-7, where it is now possible to download new firmware over the USB link USB The USB link is controlled by a FT8U245BM chip from FTDI. This is a VERY easy to use USB chip, which basically looks like a simple 8-bit buffer (hence the name).
上一篇:助聽、催眠、記憶增強三用機電路
下一篇:自動空氣清新器電路
版權(quán)與免責聲明
凡本網(wǎng)注明“出處:維庫電子市場網(wǎng)”的所有作品,版權(quán)均屬于維庫電子市場網(wǎng),轉(zhuǎn)載請必須注明維庫電子市場網(wǎng),http://m.58mhw.cn,違反者本網(wǎng)將追究相關(guān)法律責任。
本網(wǎng)轉(zhuǎn)載并注明自其它出處的作品,目的在于傳遞更多信息,并不代表本網(wǎng)贊同其觀點或證實其內(nèi)容的真實性,不承擔此類作品侵權(quán)行為的直接責任及連帶責任。其他媒體、網(wǎng)站或個人從本網(wǎng)轉(zhuǎn)載時,必須保留本網(wǎng)注明的作品出處,并自負版權(quán)等法律責任。
如涉及作品內(nèi)容、版權(quán)等問題,請在作品發(fā)表之日起一周內(nèi)與本網(wǎng)聯(lián)系,否則視為放棄相關(guān)權(quán)利。










