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资料名称: 网络音频传输模块使用说明书
资料类别: 说明书
行业类型: 能源
设备类型: 通信设备
适用对象: 工业以太网,广播,对讲,通信
资料大小: 596KB
资料分值: 0
下载次数: 5
发布时间: 2011/8/1 17:55:08
提供单位: 深圳市伟林科科技有限公司
授权方式: 由以上单位免费提供。
关键词: 广播  对讲  通信
资料简介: <H1 style="LINE-HEIGHT: 150%; MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 14pt; FONT-WEIGHT: bold; mso-spacerun: ''yes''">一、简介</SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 14pt; FONT-WEIGHT: bold; mso-spacerun: ''yes''"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></H1> <P style="LINE-HEIGHT: 150%; MARGIN-TOP: 7.8pt; MARGIN-BOTTOM: 0pt" class=p0><IMG hspace=12 align=left src="file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image-29946.png" width=373 height=321><SPAN style="FONT-FAMILY: ''宋体''; COLOR: rgb(0,0,0); FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"> </SPAN><SPAN style="FONT-FAMILY: ''宋体''; COLOR: rgb(0,0,0); FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">E702T</SPAN><SPAN style="FONT-FAMILY: ''宋体''; COLOR: rgb(0,0,0); FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">是一款高性能的10/100M网络音频模块,采用ARM+DSP构架,能接收网络音频数据流,转换成音频模拟信号输出。亦能采样本地的mic输入或linein输入,发送到网络上,供其他网络音频模块接收播放。提供语音级的双向音频数据传输,便于构建网络语音对讲系统。内置2W&nbsp;D类功放,可接8Ω/2W&nbsp;扬声器。</SPAN><SPAN style="FONT-FAMILY: ''宋体''; COLOR: rgb(0,0,0); FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">E702T</SPAN><SPAN style="FONT-FAMILY: ''宋体''; COLOR: rgb(0,0,0); FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">模块还提供了一组功放控制接口,具有静音输出,工作信号输出,继电器输出和开关输入,可方便控制外置大功率功放。提供1路用于接收用户命令和反馈模块信息的用户串行接口,1路虚拟串口便于扩展用户的应用,1路扩展串行接口,可接串口摄像头等串口设备,1路SPI扩展接口。</SPAN><SPAN style="FONT-FAMILY: ''宋体''; COLOR: rgb(0,0,0); FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"><o:p></o:p></SPAN></P> <P style="LINE-HEIGHT: 150%; MARGIN-TOP: 7.8pt; MARGIN-BOTTOM: 0pt" class=p0><SPAN style="FONT-FAMILY: ''宋体''; COLOR: rgb(0,0,0); FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"></SPAN><SPAN style="FONT-FAMILY: ''宋体''; COLOR: rgb(0,0,0); FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">我们提供了NAManager软件用于模块的IP地址等参数配置,提供二次开发动态库用于网络音频广播和网络语音对讲系统开发。</SPAN><SPAN style="FONT-FAMILY: ''宋体''; COLOR: rgb(0,0,0); FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"><o:p></o:p></SPAN></P> <H1 style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 14pt; FONT-WEIGHT: bold; mso-spacerun: ''yes''">二、模块结构</SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 14pt; FONT-WEIGHT: bold; mso-spacerun: ''yes''"><o:p></o:p></SPAN></H1> <P style="LINE-HEIGHT: 150%; MARGIN-TOP: 7.8pt; MARGIN-BOTTOM: 0pt" class=p0><SPAN style="FONT-FAMILY: ''宋体''; COLOR: rgb(0,0,0); FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"></SPAN><SPAN style="FONT-FAMILY: ''宋体''; COLOR: rgb(0,0,0); FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">E702T</SPAN><SPAN style="FONT-FAMILY: ''宋体''; COLOR: rgb(0,0,0); FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">使用了ARM和DSP双处理器构架,&nbsp;ARM处理器负责数据的传输,用户命令的解析执行以及功放接口的控制,DSP负责语音数据的编码解码和输出,外接2W功放,可直接驱动4~8Ω扬声器。模块内安装了一个硬件看门狗,防止处理器异常死机,提高系统稳定性。通过网络变压器,</SPAN><SPAN style="FONT-FAMILY: ''宋体''; COLOR: rgb(0,0,0); FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">E702T</SPAN><SPAN style="FONT-FAMILY: ''宋体''; COLOR: rgb(0,0,0); FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">可直接接入以太网。</SPAN><SPAN style="FONT-FAMILY: ''宋体''; COLOR: rgb(0,0,0); FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"><o:p></o:p></SPAN></P> <P style="LINE-HEIGHT: 150%; MARGIN-TOP: 7.8pt; MARGIN-BOTTOM: 0pt" class=p0><IMG src="file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image-24388.png" width=554 height=346><SPAN style="FONT-FAMILY: ''宋体''; COLOR: rgb(0,0,0); FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"><o:p></o:p></SPAN></P> <H1 style="LINE-HEIGHT: 150%; MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 14pt; FONT-WEIGHT: bold; mso-spacerun: ''yes''">三、功能特点</SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 14pt; FONT-WEIGHT: bold; mso-spacerun: ''yes''"><o:p></o:p></SPAN></H1> <P style="LINE-HEIGHT: 150%; MARGIN-TOP: 0pt; TEXT-INDENT: -17.955pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 8.925pt" class=p0><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">·</SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"> </SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">电源输入&nbsp;<FONT face="Times New Roman">+5V&nbsp;DC</FONT><FONT face=宋体>,</FONT><FONT face="Times New Roman">300mA</FONT><FONT face=宋体>;</FONT></SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"><o:p></o:p></SPAN></P> <P style="LINE-HEIGHT: 150%; MARGIN-TOP: 0pt; TEXT-INDENT: -17.955pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 8.925pt" class=p0><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">·</SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"> </SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">10/100M&nbsp;Base&nbsp;<FONT face=宋体>以太网接口;</FONT></SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"><o:p></o:p></SPAN></P> <P style="LINE-HEIGHT: 150%; MARGIN-TOP: 0pt; TEXT-INDENT: -17.955pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 8.925pt" class=p0><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">·&nbsp;<FONT face="Times New Roman">Mic</FONT><FONT face=宋体>输入,典型幅值</FONT><FONT face="Times New Roman">50mVpp</FONT><FONT face=宋体>,信噪比</FONT><FONT face="Times New Roman">68dB</FONT><FONT face=宋体>;</FONT></SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"><o:p></o:p></SPAN></P> <P style="LINE-HEIGHT: 150%; MARGIN-TOP: 0pt; TEXT-INDENT: -17.955pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 8.925pt" class=p0><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">·&nbsp;<FONT face="Times New Roman">LineIn</FONT><FONT face=宋体>输入,典型幅值</FONT><FONT face="Times New Roman">2200mVpp</FONT><FONT face=宋体>,信噪比</FONT><FONT face="Times New Roman">86dB</FONT></SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"><o:p></o:p></SPAN></P> <P style="LINE-HEIGHT: 150%; MARGIN-TOP: 0pt; TEXT-INDENT: -17.955pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 8.925pt" class=p0><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">·&nbsp;<FONT face="Times New Roman">Line&nbsp;Out</FONT><FONT face=宋体>输出,负载</FONT><FONT face="Times New Roman">30</FONT></SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">Ω,</SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">典型<FONT face="Times New Roman">1.5Vpp</FONT><FONT face=宋体>,谐波失真</FONT><FONT face="Times New Roman">0.1%</FONT><FONT face=宋体>;</FONT></SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"><o:p></o:p></SPAN></P> <P style="LINE-HEIGHT: 150%; MARGIN-TOP: 0pt; TEXT-INDENT: -17.955pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 8.925pt" class=p0><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">·</SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"> </SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">2W&nbsp;<FONT face=宋体>音频功放输出,接&nbsp;</FONT><FONT face="Times New Roman">4</FONT><FONT face=宋体>~</FONT><FONT face="Times New Roman">8&nbsp;</FONT></SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">Ω</SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">&nbsp;扬声器;</SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"><o:p></o:p></SPAN></P> <P style="LINE-HEIGHT: 150%; MARGIN-TOP: 0pt; TEXT-INDENT: -17.955pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 8.925pt" class=p0><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">·&nbsp;播放模式,最高<FONT face="Times New Roman">48KHz</FONT><FONT face=宋体>采样,</FONT><FONT face="Times New Roman">192Kbps</FONT><FONT face=宋体>音频流;</FONT></SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"><o:p></o:p></SPAN></P> <P style="LINE-HEIGHT: 150%; MARGIN-TOP: 0pt; TEXT-INDENT: -17.955pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 8.925pt" class=p0><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">·&nbsp;录播模式,<FONT face="Times New Roman">16KHz</FONT><FONT face=宋体>采样频率,</FONT><FONT face="Times New Roman">ADPCM</FONT><FONT face=宋体>编码;</FONT></SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"><o:p></o:p></SPAN></P> <P style="LINE-HEIGHT: 150%; MARGIN-TOP: 0pt; TEXT-INDENT: -17.955pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 8.925pt" class=p0><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">·&nbsp;对讲模式,双向<FONT face="Times New Roman">8KHz</FONT><FONT face=宋体>采样,</FONT><FONT face="Times New Roman">PCM</FONT><FONT face=宋体>编码;</FONT></SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"><o:p></o:p></SPAN></P> <P style="LINE-HEIGHT: 150%; MARGIN-TOP: 0pt; TEXT-INDENT: -17.955pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 8.925pt" class=p0><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">·&nbsp;用户串行接口,固定波特率<FONT face="Times New Roman">115.2Kbps</FONT><FONT face=宋体>;</FONT></SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"><o:p></o:p></SPAN></P> <P style="LINE-HEIGHT: 150%; MARGIN-TOP: 0pt; TEXT-INDENT: -17.955pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 8.925pt" class=p0><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">·&nbsp;虚拟串口,波特率<FONT face="Times New Roman">2400</FONT><FONT face=宋体>~</FONT><FONT face="Times New Roman">115.2Kbps</FONT><FONT face=宋体>,</FONT><FONT face="Times New Roman">7</FONT><FONT face=宋体>,</FONT><FONT face="Times New Roman">8</FONT><FONT face=宋体>数据位,</FONT><FONT face="Times New Roman">1</FONT><FONT face=宋体>,</FONT><FONT face="Times New Roman">2</FONT><FONT face=宋体>停止位,</FONT><FONT face="Times New Roman">None</FONT><FONT face=宋体>,</FONT><FONT face="Times New Roman">Even</FONT><FONT face=宋体>,</FONT><FONT face="Times New Roman">Odd</FONT><FONT face=宋体>,</FONT><FONT face="Times New Roman">Space</FONT><FONT face=宋体>,</FONT><FONT face="Times New Roman">Mark</FONT><FONT face=宋体>校验;</FONT></SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"><o:p></o:p></SPAN></P> <P style="LINE-HEIGHT: 150%; MARGIN-TOP: 0pt; TEXT-INDENT: -17.955pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 8.925pt" class=p0><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">·&nbsp;扩展串口,最高<FONT face="Times New Roman">3.125Mbps</FONT><FONT face=宋体>;</FONT></SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"><o:p></o:p></SPAN></P> <P style="LINE-HEIGHT: 150%; MARGIN-TOP: 0pt; TEXT-INDENT: -17.955pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 8.925pt" class=p0><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">·&nbsp;<FONT face="Times New Roman">SPI</FONT><FONT face=宋体>扩展接口,最高</FONT><FONT face="Times New Roman">12M</FONT><FONT face=宋体>;</FONT></SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"><o:p></o:p></SPAN></P> <P style="LINE-HEIGHT: 150%; MARGIN-TOP: 0pt; TEXT-INDENT: -17.955pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 8.925pt" class=p0><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">MIC<FONT face=宋体>、</FONT><FONT face="Times New Roman">line&nbsp;out</FONT><FONT face=宋体>、</FONT><FONT face="Times New Roman">uart0</FONT><FONT face=宋体>、</FONT><FONT face="Times New Roman">uart1</FONT><FONT face=宋体>、</FONT><FONT face="Times New Roman">uart2</FONT><FONT face=宋体>、间距都是</FONT><FONT face="Times New Roman">2.0mm</FONT><FONT face=宋体>。</FONT></SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"><o:p></o:p></SPAN></P> <P style="LINE-HEIGHT: 150%; MARGIN-TOP: 0pt; TEXT-INDENT: -17.955pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 8.925pt" class=p0><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''">Speak&nbsp;out<FONT face=宋体>、</FONT><FONT face="Times New Roman">6pin</FONT><FONT face=宋体>电源端子间距都是</FONT><FONT face="Times New Roman">2.54mm</FONT></SPAN><SPAN style="FONT-FAMILY: ''宋体''; FONT-SIZE: 10.5pt; mso-spacerun: ''yes''"><o:p></o:p></SPAN></P><!--EndFragment-->

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