欢迎访问ic37.com |
会员登录 免费注册
发布采购

CMX7143 参数 Datasheet PDF下载

CMX7143图片预览
型号: CMX7143
PDF下载: 下载PDF文件 查看货源
内容描述: 多模式无线数据调制解调器 [Multi-Mode Wireless Data Modem]
分类和应用: 调制解调器无线
文件页数/大小: 5 页 / 163 K
品牌: CMLMICRO [ CML MICROCIRCUITS ]
 浏览型号CMX7143的Datasheet PDF文件第2页浏览型号CMX7143的Datasheet PDF文件第3页浏览型号CMX7143的Datasheet PDF文件第4页浏览型号CMX7143的Datasheet PDF文件第5页  
Product Preview
CMX7143
Multi-Mode Wireless Data Modem
September 2007/2
Function Image™ FI-2.0 = 4FSK Modem Operation
Function Image™ FI-1.0 = GMSK Modem Operation
Features
Modulation scheme set by Function Image™
Half-duplex operation
4.8kbps to 19.2kbps data rates
Fast frame sync detection AFSD
(Automatic Frame Sync Detection)
Raw data mode
Flexible packet data mode
(frame sync, payload, CRC and FEC)
‘Air compatible’ mode (CMX909B/FX919B)
Soft decision decoding option
C-BUS serial interface to host micro
RSSI processing
Flexibility built on
FirmASIC
®
technology
Features
(Continued)
2 x auxiliary ADCs with 4 mux I/Ps
4 x auxiliary DACs
2 x auxiliary system clocks
Flexible powersave modes
Low power (3.0V to 3.6V) operation
Small 48-pin LQFP and VQFN packages
Applications
Wireless data modems
Software defined modem systems
Point-to-point telemetry systems
M2M applications
Traffic location systems
General wireless telemetry
Transceiver control
Tx
C-BUS
Rx
SPI port connection
Aux. ADCs
OR Stored in Host Memory
RF
Transceiver
Aux. DACs
CMX7143
Multi-Mode
Wireless Data Modem
Flash E
2
Function Image™
Host
µC
Aux. Clocks
Modulation 1
Function Image™
Tx Enable
Modulation 2
Function Image™
Rx Enable
Modulation n
GPIO
Tx Trigger
System Overview Diagram
Brief Description
The CMX7143 is a flexible half duplex, multi-mode wireless data modem IC configured by the Function
Image™ (FI) that is uploaded to the device: GMSK modem operation with FI-1.0 and 4FSK modem
operation with FI-2.0.
The device implements a comprehensive wireless data modem function. Raw data and packet data
modes of operation are available; the packet mode being an enabler to achieve the lowest system
operating power by minimising the host microcontroller interaction. Communication to a host is via a
flexible serial bus (C-BUS). The device includes carrier sense function for LBT (Listen Before Transmit)
applications and can automatically control the transmit hardware, including a RAMDAC feature for PA
ramping.
Other features include two Auxiliary ADCs with four selectable inputs and four auxiliary DAC interfaces
(with an optional RAMDAC on the first DAC output, to facilitate transmitter power ramping). The device
has flexible powersaving modes and RSSI processing and is available in both LQFP and VQFN
packages.
© 2007 CML Microcircuits
1/5