1)MCS51內(nèi)核，可以利用單片及開發(fā)軟件Keil軟件方便開發(fā)mp3播放器，無需特殊軟件平臺； 2)MPEG I/II-Layer 3 hardware decoder .獨立MP3 Decoder .支持48,44.1,32,24,22.05,16khz取樣頻率 .支持軟件31階音量控制,高中低音均衡控制 .重低音效果 3)集成DAC部件，支持PCM,IIS格式； 4)64K字節(jié)片上代碼存儲空間（100K次擦寫壽命） 5)4K字節(jié)boot flash memory,USB/UART下載代碼 6)集成USB1.1 device部件 7)MMC卡接口 8)IDE/ATAPI接口（HDD/CD-ROM Interface) 9)2通道ADC,8Khz取樣 ....................... 關(guān)于該芯片的具體信息，可以訪問www.atmel.com獲取at89c51snd1c的datasheet. 這款MP3播放器以at89c51snd1c為核心，以硬盤為存儲介質(zhì)，液晶屏為雙行顯示，每行顯示 7.5個漢字，這塊液晶屏以ST7920作為主控制器，內(nèi)部集成8129個漢字，液晶屏在這個播放器中 用來顯示歌曲名稱以及一些播放狀態(tài) 支持FAT16，一個分區(qū)，不支持FAT32, USB1.1,速度有點慢
上傳時間： 2013-12-20
上傳用戶：電子世界
at91rm9200例子代碼，包括audio,basicboot,display,emac,flash,ide,rtc,uart,usb-device,usb-host
上傳時間： 2015-06-22
上傳用戶：sdq_123
Linux 虛擬網(wǎng)絡(luò)接口 實例 In the Linux (or Unix) world, most network interfaces, such as eth0 and ppp0, are associated with a physical device that is in charge of transmitting and receiving data packets. However, some logical network interfaces don t feature any physical packet transmission. The most well-known examples of these "virtual" interfaces are the shaper and eql interfaces.
標簽： Linux interfaces network world
上傳時間： 2014-01-11
上傳用戶：zhangzhenyu
Windows下讀寫硬件的工具. RW - Read & Write utility, for hardware engineers, firmware (BIOS) engineers, driver developers, QA engineers, performance test engineers, diagnostic engineers, etc., This utility access almost all the computer hardware, including PCI (PCI Express), PCI Index/Data, Memory, Memory Index/Data, I/O Space, I/O Index/Data, Super I/O, Clock Generator, DIMM SPD, SMBus Device, CPU MSR Registers, ATA/ATAPI Identify Data, ACPI Tables Dump (include AML decode), Embedded Controller, USB Information and LPT Remote Access. And also an Command Window is provided to access hardware manually.
標簽： engineers firmware hardware Windows
上傳時間： 2015-07-01
上傳用戶：xc216
This book focuses on combining C++ s power and flexibility with high performance and scalability, resulting in the best of both worlds. Specific topics include temporary objects, memory management, templates, inheritance, virtual functions, inlining, referencecounting, STL, and much more
標簽： flexibility performance scalability and
上傳時間： 2015-07-02
上傳用戶：784533221
RW - Read & Write utility, for hardware engineers, firmware (BIOS) engineers, driver developers, QA engineers, performance test engineers, diagnostic engineers, etc., This utility access almost all the computer hardware, including PCI (PCI Express), PCI Index/Data, Memory, Memory Index/Data, I/O Space, I/O Index/Data, Super I/O, Clock Generator, DIMM SPD, SMBus Device, CPU MSR Registers, ATA/ATAPI Identify Data, ACPI Tables Dump (include AML decode), Embedded Controller, USB Information and LPT Remote Access. And also an Command Window is provided to access hardware manually. Website1: http://rw.net-forces.com/ Website2: http://home.kimo.com.tw/ckimchan.tw/ Website3: http://jacky5488.myweb.hinet.net/ For best view, please change the screen resolution to 1024 x 768 (or above) pixels.
標簽： engineers developers firmware hardware
上傳時間： 2013-12-22
上傳用戶：王楚楚
his project was built and tested with WinAVR-20060125. Make sure the MCU target define in the Makefiles corresponds to the AVR you are using!! To build the code, just install WinAVR and run "make" from the console in echomaster and echoslave subdirs. "make program" will program the device if you have a AVRISP attached. Remember to set the AVR device to at least 8MHz. The AVR may use the programmable clock from MC1319x, just remember to check if the MC1319x and SPI communication is working FIRST! Otherwise you wont get any clock signal to the AVR and then you can t program it or reset the fuses! The MC1319x has default clock output of 32kHz so you will have to set your programmer to a very low frequency (<=32kHz/4) to be able to program it while it is running on that!
標簽： the 20060125 project WinAVR
上傳時間： 2014-10-10
上傳用戶：yan2267246
藍牙協(xié)議This specification describes the Audio/Video Control Transport Protocol (AVCTP), which is used to transport command and response messages for controlling Audio Video features in conformant devices. This protocol enables a device to support more than one control profile at the same time each supported profile shall define its own message formatting and/or usage rules.
標簽： specification describes Transport Protocol
上傳時間： 2015-08-11
上傳用戶：大融融rr
Metalog is a modern replacement for syslogd and klogd. The logged messages can be dispatched according to their facility, urgency, program name and/or Perl-compatible regular expressions. Log files can be automatically rotated when they exceed a certain size or age. External shell scripts (e.g., mail) can be launched when specific patterns are found. Metalog is easier to configure than syslogd and syslog-ng, accepts unlimited number of rules and has (switchable) memory bufferization for maximal performance.
標簽： replacement dispatched messages Metalog
上傳時間： 2014-01-03
上傳用戶：腳趾頭
ARM7硬件說明與開發(fā) The ARM7 is a low-power, general purpose 32-bit RISC microprocessor macrocell for use in application or customer-specific integrated circuts (ASICs or CSICs). Its simple, elegant and fully static design is particularly suitable for cost and power-sensitive applications. The ARM7’s small die size makes it ideal for integrating into a larger custom chip that could also contain RAM, ROM, logic, DSP and other cells.
標簽： ARM7 microprocessor low-power macrocell
上傳時間： 2013-12-17
上傳用戶：3到15
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