DMR digital intercom module Digital Mobile Radio

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DMR digital intercom module Digital Mobile Radio [复制链接]

Digital Mobile Radio
DMR Digital Radio
DMR digital intercom module
  Use digital intercom module with the DMR standard, support simplex voice, acknowledged  unacknowledged data SMS communication. This module internally installed high‐powered RF transceiver chip, RF power amplifier, and DMR digital intercom chip. The external MCU can set the working parameter of the module by the standard asynchronous serial port communication and control the working state of the module. Only an external antenna, a microphone and a voice amplifier are needed forthe module to form a complete DMR digital interphone.

1. Application Fields
   Miniaturization digital interphone
   Digital communication system of mobile phone
2.Characteristics
   FrequencyRange： 400~470MHz
   FrequencySpace： 12.5kHz
   RF output power： high power 2W， low power 0.5W
   SupplyVoltage： 4V
   HighReceivingSensitivity： ?‐118dBm
   Supportwriting‐frequency
   Support the DMR protocol and compatible with traditional analog intercom mode
   The following businesses are supported underthe mode of DMR
   Support group calling, individual calling, general calls
   Support acknowledged/unacknowledged  SMS communication  and  status short
message
   Support calling/called detection
   Support call alert
   Support remote monitoring
   Support emergency alarm
   Support killing in a long distance/activating
   Support voice and SMS application with shoot‐through state and relay mode
   The following businesses are supported underthe mode ofanalog communication
   Support CTCSS/CDCSS tone squelch
   Supportmonitoring
     The module board as shown in Figure 1, and its size is 23.9mm×39.5mmx3.8mm. The definition of Pin as shown in table

3.Module Pin Name:
Pin        Pin Name        Pin        Functional Description
No.                Category       
1        SPK_EN        DIO        Speaker output control enable
2        NC                  
3        LINE_OUT        AO        Audio output
4        +3.3V        POWER        Module burn口(external test point or hang in the air)
5        PTT        DI        Module transmitter/receiver control enable. 1is receiver, 0 is transmitter.
6        PWD        DI        Module makes enable sleep, and 0 is sleeping
7        NC                  
8        VBAT        POWER        Power Supply
9        GND        GND        Ground
10        GND        GND        Ground
11        NC                  
12        ANT                 Connect the antenna
13        ARM‐RST        DIO        Module burn口(external test point or hang in the air)
14        SWDIO        DIO        Module burn口(external test point or hang in the air)
15        SWCLK        DIO        Module burn口(external test point or hang in the air)
16        UART_RX        DI        AsynchronousSerial Port（Receive Date口）
17        UART_TX        DO        AsynchronousSerial Port（Send Date口）
18        MIC_IN        AI        Audio output
19        GND        GND        Ground
20        GND        GND        Ground


Jacky TEL:+86-755-13530996490 qq:1711136394       

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