UC知道cc2430翻译（22）
来源：百度知道 编辑：UC知道 时间：2024/05/20 05:58:35
The CC2430 transmitter is based on direct
up-conversion. The data is buffered in a
128 byte transmit FIFO (separate from the
receive FIFO). The preamble and start of
frame delimiter are generated in hardware.
Each symbol (4 bits) is spread using the
IEEE 802.15.4 spreading sequence to 32
chips and output to the digital-to-analog
converters (DACs).
An analog low pass filter passes the signal
to the quadrature (I and Q) up-conversion
mixers. The RF signal is amplified in the
power amplifier (PA) and fed to the
antenna.
The internal T/R switch circuitry makes the
antenna interface and matching easy. The
RF connection is differential. A balun may
be used for single-ended antennas. The
biasing of the PA and LNA is done by
connecting TXRX_SWITCH to RF_P and
RF_N through an external DC path.
The frequency synthesizer includes a
completely on-chip LC VCO and a 90
degrees pha
up-conversion. The data is buffered in a
128 byte transmit FIFO (separate from the
receive FIFO). The preamble and start of
frame delimiter are generated in hardware.
Each symbol (4 bits) is spread using the
IEEE 802.15.4 spreading sequence to 32
chips and output to the digital-to-analog
converters (DACs).
An analog low pass filter passes the signal
to the quadrature (I and Q) up-conversion
mixers. The RF signal is amplified in the
power amplifier (PA) and fed to the
antenna.
The internal T/R switch circuitry makes the
antenna interface and matching easy. The
RF connection is differential. A balun may
be used for single-ended antennas. The
biasing of the PA and LNA is done by
connecting TXRX_SWITCH to RF_P and
RF_N through an external DC path.
The frequency synthesizer includes a
completely on-chip LC VCO and a 90
degrees pha
CC2430发射机基于直接向上的移动-转换的. 数据被在一128字节中当缓冲传送FIFO(分开从收到FIFO).序言和出发的结构定界符公亩产生在朝派硬件.每一符号((4小块)被传布向32芯片使用美国电气及电子工程师学会 802.15.4扩展序列和对数字的-类似物使转变的人((DACs)使出.一个类似物低通行证过滤器沿着-转换混合者把信号传给求积分(( 我和Q).被在功率放大器((PA)中扩大和用RF 信号喂触角.内部T//R开关电路学不成问题使触角成为接口和相配.RF联系是有区别.一台平衡-不平衡转换器可以被用于单打-结束触角的.PA和LNA的左右被通过一外部DC通道把TXRX_SWITCH连接到RF_P和RF_N做. 频率综合者在-芯片LC VCO上-完全包含a和一产生我和 Q北美印第安人90度分相器为向挫折-转换混合者发信号示意在朝派收到方式和沿着-转换混合者在朝派传送方式.VCO在频率范围中运作4800?C4966MHz,和频率当裂开的时候,被二分成我和Q信号.手指基带包含支持为结构触摸,地址承认,databuffering,CSMA-CA闪光处理器和麦克安全.一右手击球员的左后方场地芯片电压调节器把控制1.8 V供应电压送到was