Tait TM8000 Series Applications Manual

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Contents

Tait TM8000 Series Applications Manual Manual pdf 32 page image

32 Description of the Radio Interfaces TM8000 3DK Hardware Developer’s Kit Application ManualSeptember 2003 © Tait Electronics Ltd2.7 Control-Head ConnectorThe control-head connector is the standard interface between the radiobody and the TM8115 control head or TM8105 blank control head.You can integrate your own blank control head options board into the cavitybetween the radio body and the TM8105 blank control head.For information on how to create your own blank control head optionsboard, refer to “Blank Control Head Options Board” on page 95.The TM8115 control head uses all 18 signals of the control-head connector.The programming connector of the TM8105 blank control head uses thesignals 1 to 9.Table 2.19 Control-head connector - pins and signalsPinout Pin Signal Description Signal type1 RX_AUD Receive audio output. Post volumecontrol. AC-coupled.Analogue2 +13V8a Power supply output from radio bodypower source.Power3 CH_TXD Asynchronous serial port -Transmit data.Digital. 3V3 CMOS.4 CH_PTT PTT input from microphone. Also carriesthe hookswitch signal.Digital5 CH_MIC_AUD Fist microphone audio input. Analogue6 AGND Analogue ground. Ground7 CH_RXD Asynchronous serial port - Receive data. Digital. 3V3 CMOS.8 DGND Digital ground. Ground9 CH_ON_OFF Hardware power on/software-controlledpower off input. Active low.Digital10 VOL_WIP_DC DC signal from TM8115 volume potwiper.Analogue11 CH_SPI_DO Data output signal to TM8115 controlhead.Digital. 3V3 CMOS.12 CH_LE Latch enable output to TM8115 controlhead.Digital. 3V3 CMOS.13 CH_GPIO1 General purpose digital input/output. Digital. 3V3 CMOSinput. Open collectoroutput with pullup.14 +3V3 Power supply to control head digitalcircuits.Power15 CH_SPI_DI Data input from TM8115 control head. Digital. 3V3 CMOS.16 CH_SPI_CLK Clock output to TM8115 control head. Digital. 3V3 CMOS.17 SPK– Speaker audio output for non-remotecontrol head. Balanced loadconfiguration.Analogue18 SPK+ Speaker audio output for non-remotecontrol head. Balanced loadconfiguration.Analoguea. Can be switched or unswitched. For more information refer to “Connector Power Supply Options” on page 131."#-.(/(0(1(2(3!$%&'()(*(+(,front view