1)MCS51内核，可以利用单片及开发软件Keil软件方便开发mp3播放器，无需特殊软件平台； 2)MPEG I/II-Layer 3 hardware decoder .独立MP3 Decoder .支持48,44.1,32,24,22.05,16khz取样频率 .支持软件31阶音量控制,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字节片上代码存储空间（100K次擦写寿命） 5)4K字节boot flash memory,USB/UART下载代码 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取样 ....................... 关于该芯片的具体信息，可以访问www.atmel.com获取at89c51snd1c的datasheet. 这款MP3播放器以at89c51snd1c为核心，以硬盘为存储介质，液晶屏为双行显示，每行显示 7.5个汉字，这块液晶屏以ST7920作为主控制器，内部集成8129个汉字，液晶屏在这个播放器中 用来显示歌曲名称以及一些播放状态 支持FAT16，一个分区，不支持FAT32, USB1.1,速度有点慢
上传时间： 2013-12-20
上传用户：电子世界
at91rm9200例子代码，包括audio,basicboot,display,emac,flash,ide,rtc,uart,usb-device,usb-host
上传时间： 2015-06-22
上传用户：sdq_123
Linux 虚拟网络接口 实例 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.
标签： Linux interfaces network world
上传时间： 2014-01-11
上传用户：zhangzhenyu
Windows下读写硬件的工具. 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.
标签： engineers firmware hardware Windows
上传时间： 2015-07-01
上传用户：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
标签： flexibility performance scalability and
上传时间： 2015-07-02
上传用户：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.
标签： engineers developers firmware hardware
上传时间： 2013-12-22
上传用户：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!
标签： the 20060125 project WinAVR
上传时间： 2014-10-10
上传用户：yan2267246
蓝牙协议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.
标签： specification describes Transport Protocol
上传时间： 2015-08-11
上传用户：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.
标签： replacement dispatched messages Metalog
上传时间： 2014-01-03
上传用户：脚趾头
ARM7硬件说明与开发 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.
标签： ARM7 microprocessor low-power macrocell
上传时间： 2013-12-17
上传用户：3到15
