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    CMX7141L4 参数 Datasheet PDF下载

    CMX7141L4图片预览
    型号： CMX7141L4
    PDF下载： 下载PDF文件 查看货源
    内容描述： [Microprocessor, 4MHz, CMOS, PQFP48, LQFP-48]
    分类和应用： 时钟外围集成电路
    文件页数/大小： 74 页 / 4034 K
    品牌： CMLMICRO [ CML MICROCIRCUITS ]
     浏览型号CMX7141L4的Datasheet PDF文件第1页浏览型号CMX7141L4的Datasheet PDF文件第2页浏览型号CMX7141L4的Datasheet PDF文件第4页浏览型号CMX7141L4的Datasheet PDF文件第5页浏览型号CMX7141L4的Datasheet PDF文件第6页浏览型号CMX7141L4的Datasheet PDF文件第7页浏览型号CMX7141L4的Datasheet PDF文件第8页浏览型号CMX7141L4的Datasheet PDF文件第9页  
    Digital PMR Radio Processor
    CMX7131/CMX7141
    CONTENTS
    Section
    1
    2
    3
    4
    Page
    Brief Description ...................................................................................................................... 2
    Block Diagram .......................................................................................................................... 7
    Signal List................................................................................................................................. 8
    3.1
    Signal Definitions ........................................................................................................ 10
    External Components............................................................................................................ 11
    4.1
    Recommended External Components ....................................................................... 13
    4.2
    PCB Layout Guidelines and Power Supply Decoupling .............................................. 14
    4.3
    CMX994 Interface ....................................................................................................... 16
    General Description............................................................................................................... 18
    5.1
    Features...................................................................................................................... 18
    5.2
    System Design............................................................................................................ 19
    5.2.1 Vocoder Implementation ...................................................................................... 19
    5.2.2 Data Transfer ....................................................................................................... 20
    5.2.3 RSSI Measurement (LD Mode only) .................................................................... 20
    5.2.4 Serial Memory Connection (LD Mode only) ......................................................... 21
    5.2.5 CMX994 Connection (I/Q Mode only) .................................................................. 21
    5.2.6 Hardware AGC – AuxADC1 Connection .............................................................. 21
    5.2.7 RSSI Measurement (I/Q Mode only) .................................................................... 21
    5.3
    Introduction ................................................................................................................. 22
    5.3.1 Modulation ............................................................................................................ 22
    5.3.2 Internal Processing .............................................................................................. 25
    5.3.3 Frame Sync Detection and Demodulation ........................................................... 25
    5.3.4 FEC and Coding ................................................................................................... 29
    5.3.5 Voice Coding ........................................................................................................ 29
    5.3.6 Radio Performance Requirements ....................................................................... 29
    Detailed Descriptions ............................................................................................................ 30
    6.1
    Xtal Frequency............................................................................................................ 30
    6.2
    Host Interface ............................................................................................................. 30
    6.2.1 C-BUS Operation ................................................................................................. 30
    6.3
    Function Image™ Loading.......................................................................................... 32
    6.3.1 FI Loading from Host Controller ........................................................................... 33
    6.3.2 FI Loading from Serial Memory ............................................................................ 35
    6.4
    NXDN Standard Vocoder Interface ............................................................................ 36
    2
    6.4.1 Support for I S Mode ............................................................................................ 36
    6.5
    Device Control ............................................................................................................ 36
    6.5.1 General Notes ...................................................................................................... 37
    6.5.2 Interrupt Operation ............................................................................................... 37
    6.5.3 Signal Routing ...................................................................................................... 37
    6.5.4 Modem Control..................................................................................................... 38
    6.5.5 Tx Mode NXDN Formatted .................................................................................. 39
    6.5.6 Tx Mode ............................................................................................................... 40
    6.5.7 Tx Mode PRBS .................................................................................................... 44
    5
    6
    2014 CML Microsystems Plc
    Page 3
    D/7141_FI-3.x/6

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