Kenwood NXR-700H Service Manual

NXR-700H53Pin No. Name I/O Function28 PATH_SW O Route formation signal of audio circuit29 RXAD_SW O Route formation signal of audio circuit30 MIC_SW O Route formation signal of audio circuit31 MICAD_SW O Route formation signal of audio circuit32 TD_SW O Route formation signal of audio circuit33 NC - No connection34 LO_VOL_DET I Detection of voltage for low voltage state35 GND - Ground36 PTT_TXD_SCM - No connectionCN402 (To X53-413 CN2)1 HI_VOL_DET I Voltage monitor2 GND - Ground3 50MPU_A_GND - Ground4 50MPU I 5V constant voltage5 50MPU_A_GND - Ground6 DC50 I 5V constant voltage7 DC50 I 5V constant voltage8 DC50 I 5V constant voltage9 DC50 I 5V constant voltage10 33MPU_A_GND - Ground11 33MPU I 3.3V constant voltage12 33MPU I 3.3V constant voltage13 33MPU_A_GND - Ground14 50MPU_A I 5V constant voltage15 33MPU_A I 3.3V constant voltage16 33SH O 3.3V constant voltage17 50MPU_CONT O 5V regulator control18 NC - No connection19 E_PTT_SH I “External press-to-talk-switch” signalto Main MPU20 SC_SH I “Squelch control” signal to Main MPU21 GND - Ground22 SRXD_ATXO O UART signal from RF control MPU toMain MPU23 STXO_ARXO I UART signal from Main MPU to RFcontrol MPU24 GND - Ground25 RF_PTT I “Press-to-talk-switch” signal to Main MPU26 TX_STATE I “During the transmission” signal toMain MPU27 QT_DQT I “Detect QT or DQT” signal to Main MPU28 RADIO_EER I “Detect accident of RF block” signal toMain MPU29 GND - Ground30 ADSP_CK_SFT O “Frequency shift” signal to Analogmode DSP31 TRUKING I “Trunking mode” signal to Main MPU管脚号名称输入 / 输出功能28 PATH_SW 输出音频电路的路径形成信号29 RXAD_SW 输出音频电路的路径形成信号30 MIC_SW 输出音频电路的路径形成信号31 MICAD_SW 输出音频电路的路径形成信号32 TD_SW 输出音频电路的路径形成信号33 NC - 未连接34 LO_VOL_DET 输入低电压状态的电压检测35 GND - 接地36 PTT_TXD_SCM - 未连接CN402( 至 X53-413 CN2)1 HI_VOL_DET 输入电压监视器2 GND - 接地3 50MPU_A_GND - 接地4 50MPU 输入 5V 恒定电压5 50MPU_A_GND - 接地6 DC50 输入 5V 恒定电压7 DC50 输入 5V 恒定电压8 DC50 输入 5V 恒定电压9 DC50 输入 5V 恒定电压10 33MPU_A_GND - 接地11 33MPU 输入 3.3V 恒定电压12 33MPU 输入 3.3V 恒定电压13 33MPU_A_GND - 接地14 50MPU_A 输入 5V 恒定电压15 33MPU_A 输入 3.3V 恒定电压16 33SH 输出 3.3V 恒定电压17 50MPU_CONT 输出 5V 调整器控制18 NC - 未连接19 E_PTT_SH 输入至主 MPU 的“外部按讲开关”信号20 SC_SH 输入至主 MPU 的“静噪控制”信号21 GND - 接地22 SRXD_ATXO 输出从 RF 控制 MPU 到主 MPU 的 UART信号23 STXO_ARXO 输入从主 MPU 到 RF 控制 MPU 的 UART信号24 GND - 接地25 RF_PTT 输入至主 MPU 的“按讲开关”信号26 TX_STATE 输入至主 MPU 的“发射过程中”信号27 QT_DQT 输入至主 MPU 的“检测 QT 或 DQT”信号28 RADIO_EER 输入至主 MPU 的“RF 块的检测事件”信号29 GND - 接地30 ADSP_CK_SFT 输出至模拟模式 DSP 的“频率比偏移”信号31 TRUKING 输入至主 MPU 的“中继模式”信号TERMINAL FUNCTION / 端子功能