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CC2430F32RTC 参数 Datasheet PDF下载

CC2430F32RTC图片预览
型号: CC2430F32RTC
PDF下载: 下载PDF文件 查看货源
内容描述: 真正的系统级芯片解决方案的2.4 GHz IEEE 802.15.4 / ZigBee的 [A True System-on-Chip solution for 2.4 GHz IEEE 802.15.4 / ZigBee]
分类和应用: 电信集成电路
文件页数/大小: 212 页 / 1862 K
品牌: TAOS [ TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS ]
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CC2430  
Radio : USART  
14 Radio  
AUTOMATIC GAIN CONTROL  
DIGITAL  
DEMODULATOR  
RADIO  
ADC  
Register bus  
REGISTER  
BANK  
- Digital RSSI  
- Gain Control  
- Image Suppression  
- Channel Filtering  
- Demodulation  
- Frame  
LNA  
FFCTRL  
ADC  
synchronization  
CSMA/CA  
STROBE  
TXRX SWITCH  
PROCESSOR  
0
FREQ  
SYNTH  
SFR bus  
90  
TX POWER CONTROL  
IRQ  
HANDLING  
DAC  
DIGITAL  
MODULATOR  
Power  
Control  
- Data spreading  
- Modulation  
PA  
Σ
DAC  
Figure 32: CC2430 Radio Module  
A simplified block diagram of the IEEE  
802.15.4 compliant radio inside CC2430 is  
shown in Figure 32. The radio core is based  
on the industry leading CC2420 RF transceiver.  
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.  
CC2430 features  
a
low-IF receiver. The  
received RF signal is amplified by the low-  
noise amplifier (LNA) and down-converted in  
quadrature (I and Q) to the intermediate  
frequency (IF). At IF (2 MHz), the complex I/Q  
signal is filtered and amplified, and then  
digitized by the RF receiver ADCs. Automatic  
gain control, final channel filtering, de-  
spreading, symbol correlation and byte  
synchronization are performed digitally.  
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.  
An interrupt indicates that a start of frame  
delimiter has been detected. CC2430 buffers  
the received data in a 128 byte receive FIFO.  
The user may read the FIFO through an SFR  
interface. It is recommended to use direct  
memory access (DMA) to move data between  
memory and the FIFO.  
The frequency synthesizer includes  
a
completely on-chip LC VCO and a 90 degrees  
phase splitter for generating the I and Q LO  
signals to the down-conversion mixers in  
receive mode and up-conversion mixers in  
transmit mode. The VCO operates in the  
frequency range 4800 – 4966 MHz, and the  
frequency is divided by two when split into I  
and Q signals.  
CRC is verified in hardware. RSSI and  
correlation values are appended to the frame.  
Clear channel assessment, CCA, is available  
through an interrupt in receive mode.  
The digital baseband includes support for  
frame handling, address recognition, data  
buffering, CSMA-CA strobe processor and  
MAC security.  
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  
An on-chip voltage regulator delivers the  
regulated 1.8 V supply voltage.  
CC2430 Data Sheet (rev. 2.1) SWRS036F  
Page 153 of 211