📄 5117-我要仪器网 - 应用案例 - 射频模块ptr8000在无线抄表中的应用.htm
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<TD vAlign=top width="8%">
<DIV>方向</DIV></TD>
<TD width="9%">
<DIV align=center>管脚</DIV></TD>
<TD width="9%">
<DIV align=center>描述</DIV></TD>
<TD width="21%">
<DIV align=center>功 能</DIV></TD>
<TD width="9%">
<DIV align=center>方向</DIV></TD></TR>
<TR>
<TD width="9%">
<DIV align=center>Pin1</DIV></TD>
<TD width="11%">
<DIV>VCC</DIV></TD>
<TD width="21%">
<DIV>正电源1.9－3.6V</DIV></TD>
<TD width="8%">
<DIV align=center>I</DIV></TD>
<TD width="9%">
<DIV align=center>Pin 8</DIV></TD>
<TD width="9%">
<DIV>DR</DIV></TD>
<TD width="21%">
<DIV>数据就绪输出</DIV></TD>
<TD width="9%">
<DIV align=center>O</DIV></TD></TR>
<TR>
<TD width="9%">
<DIV align=center>Pin 2</DIV></TD>
<TD width="11%">
<DIV>TX_EN</DIV></TD>
<TD width="21%">
<DIV>1发射模式</DIV>
<DIV>0接收模式</DIV></TD>
<TD width="8%">
<DIV align=center>I</DIV></TD>
<TD width="9%">
<DIV align=center>Pin 9</DIV></TD>
<TD width="9%">
<DIV>MISO</DIV></TD>
<TD width="21%">
<DIV>SPI输出</DIV></TD>
<TD width="9%">
<DIV align=center>O</DIV></TD></TR>
<TR>
<TD width="9%">
<DIV align=center>Pin 3</DIV></TD>
<TD width="11%">
<DIV>TRX_CE</DIV></TD>
<TD width="21%">
<DIV>使能TX/RX模式</DIV>
<DIV>（区别配置模式）</DIV></TD>
<TD width="8%">
<DIV align=center>I</DIV></TD>
<TD width="9%">
<DIV align=center>Pin 10</DIV></TD>
<TD width="9%">
<DIV>MOSI</DIV></TD>
<TD width="21%">
<DIV>SPI输入</DIV></TD>
<TD width="9%">
<DIV align=center>I</DIV></TD></TR>
<TR>
<TD width="9%">
<DIV align=center>Pin 4</DIV></TD>
<TD width="11%">
<DIV>PWR</DIV></TD>
<TD width="21%">
<DIV>Power down 模式</DIV></TD>
<TD width="8%">
<DIV align=center>I</DIV></TD>
<TD width="9%">
<DIV align=center>Pin 11</DIV></TD>
<TD width="9%">
<DIV>SCK</DIV></TD>
<TD width="21%">
<DIV>SPI时钟</DIV></TD>
<TD width="9%">
<DIV align=center>I</DIV></TD></TR>
<TR>
<TD width="9%">
<DIV align=center>Pin 5</DIV></TD>
<TD width="11%">
<DIV>uCLK</DIV></TD>
<TD width="21%">
<DIV>时钟分频输出</DIV></TD>
<TD width="8%">
<DIV align=center>O</DIV></TD>
<TD width="9%">
<DIV align=center>Pin 12</DIV></TD>
<TD width="9%">
<DIV>CSN</DIV></TD>
<TD width="21%">
<DIV>SPI使能，低有效</DIV></TD>
<TD vAlign=top width="9%">
<DIV align=center></DIV></TD></TR>
<TR>
<TD width="9%">
<DIV align=center>Pin 6</DIV></TD>
<TD width="11%">
<DIV>CD</DIV></TD>
<TD width="21%">
<DIV>载波检测输出</DIV></TD>
<TD width="8%">
<DIV align=center>O</DIV></TD>
<TD width="9%">
<DIV align=center>Pin 13</DIV></TD>
<TD vAlign=top width="9%">
<DIV>GND</DIV></TD>
<TD vAlign=top width="21%">
<DIV>电源地</DIV></TD>
<TD vAlign=top width="9%">
<DIV align=center></DIV></TD></TR>
<TR>
<TD width="9%">
<DIV align=center>Pin 7</DIV></TD>
<TD width="11%">
<DIV>AM</DIV></TD>
<TD width="21%">
<DIV>地址匹配输出</DIV></TD>
<TD width="8%">
<DIV align=center>O</DIV></TD>
<TD width="9%">
<DIV align=center>Pin 14</DIV></TD>
<TD vAlign=top width="9%">
<DIV>GND</DIV></TD>
<TD vAlign=top width="21%">
<DIV>电源地</DIV></TD>
<TD vAlign=top width="9%">
<DIV align=center></DIV></TD></TR></TBODY></TABLE>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
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<DIV>
</DIV>
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<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
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<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV><BR><BR><BR><BR><BR><BR><BR><BR><BR><BR><BR><BR><BR><BR><BR>2）模式控制、SPI配置和时序</DIV>
<DIV>PTR8000的模式控制、各模式间转换时间以及配置寄存器分别如表2、3、4所示。</DIV>
<DIV></DIV>
<DIV></DIV>
<DIV>表2 PTR8000模式控制 </DIV>
<DIV>
<TABLE cellSpacing=0 cellPadding=0 align=left
border=1><TBODY>
<TR>
<TD width="14%">
<DIV align=center>PWR</DIV></TD>
<TD width="21%">
<DIV align=center>TRX_CE</DIV></TD>
<TD width="19%">
<DIV align=center>TX_EN</DIV></TD>
<TD width="44%">
<DIV align=center>工作模式</DIV></TD></TR>
<TR>
<TD width="14%">
<DIV align=center>0</DIV></TD>
<TD width="21%">
<DIV align=center>X</DIV></TD>
<TD width="19%">
<DIV align=center>X</DIV></TD>
<TD width="44%">
<DIV align=center>掉电和SPI编程模式</DIV></TD></TR>
<TR>
<TD width="14%">
<DIV align=center>1</DIV></TD>
<TD width="21%">
<DIV align=center>0</DIV></TD>
<TD width="19%">
<DIV align=center>X</DIV></TD>
<TD width="44%">
<DIV align=center>待机和SPI编程模式</DIV></TD></TR>
<TR>
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