TB7100 Installation and Operation Manual Connections 75© Tait Electronics Limited December 20056.2.3 UI Board ConnectorsUser InterfaceConnector toTransmitterThe user interface connector (SK1) to the transmitter is a 16-wayMicroMaTch connector..User InterfaceConnector toReceiverThe user interface connector (SK2) to the receiver is a 16-way MicroMaTchconnector.Pin Signal Name Signal Type Notes1 TX_RX_AUD no connection no connection2 TX_+13V8_SW no connection no connection3 TX_CH_TXD output programming data4 TX_CH_PTT output microphone PTT5 TX_MIC_AUD_OUT output audio from microphone6 TX_AGND ground analogue ground7 TX_CH_RXD input programming data8 TX_DGND ground digital ground9 TX_CH_ON_OFF input digital ground10 TX_VOL_WIP_DC output no connection11 TX_CH_SPI_D0 input12 TX_CH_LE input13 TX_CH_SPIO1 input digital ground14 TX_+3V3 no connection no connection15 TX_CH_SPI_DI output16 TX_CH_SPI_CLK input17 TX_CH_SPK- no connection no connection18 TX_CH_SPK+ no connection no connection12external viewPin Signal Name Signal Type Notes1 RX_RX_AUD no connection no connection2 RX_+13V8_SW input +13V8DC for PCB3 RX_CH_TXD output programming data4 RX_CH_PTT no connection no connection5 RX_MIC_AUD_OUT input no connection6 RX_AGND ground analogue ground7 RX_CH_RXD input programming data8 RX_DGND ground digital ground9 RX_CH_ON_OFF input digital ground10 RX_VOL_WIP_DC output volume control11 RX_CH_SPI_D0 input12 RX_CH_LE input13 RX_CH_GPIO1 input digital ground14 RX_+3V3 input +3V3DC for PCB15 RX_CH_SPI_DI output16 RX_CH_SPI_CLK input17 RX_CH_SPK- input speaker audio18 RX_CH_SPK+ input speaker audioexternal view12
