Kenwood NXR-800H Service Manual

NXR-800H47Pin No. Name I/O Function6 50MPU O 5V constant voltage7 GND - Ground8 DC8 O 8V constant voltage9 K5 O Key Scan10 K4 O Key Scan11 K3 I Key Scan12 K2 I Key Scan13 K1 I Key Scan14 GND - Ground15 STB1 O Shift Register Strobe16 GND - Ground17 SR_DATA O Shift Register Data18 GND - Ground19 SR_CLK O Shift Register Clock20 GND - Ground21 SR_OE O Shift Register Output Enable22 GND - Ground23 PTT_TXD_SCM I MIC PTT24 SCM_EN - No connection25 HOOK_RXD_SCM I HOOK detect input26 GND - Ground27 OCXO_ST_G O OCXO Green LED Switch28 PWR_ST_R O POWER Red LED Switch29 OCXO_ST_R O OCXO Red LED Switch30 SB O Power supply output31 VOLUME_IN I Volume control input for AF signal32 33AUD O 3.3V constant voltage33 33MPU O 3.3V constant voltage34 MIC I MIC Signal input35 GND - Ground36 MIG - MIC GroundCN4 (To X45-386 C/5 CN11)1 E - Ground2 NC - No connection3 SB I Power supply input4 SB I Power supply inputCN56 (To X56-312 A/3 CN804)1 GND - Ground2 GND - Ground3 PAG O POCSAG Switch4 GND - Ground5 CONT_5.0V O 5V constant voltage6 D_GND - Ground7 CONT_5.0V O 5V constant voltage8 D_GND - Ground管脚号名称输入 / 输出功能6 50MPU 输出 5V 恒定电压7 GND - 接地8 DC8 输出 8V 恒定电压9 K5 输出按键扫描10 K4 输出按键扫描11 K3 输入按键扫描12 K2 输入按键扫描13 K1 输入按键扫描14 GND - 接地15 STB1 输出移位寄存器选通脉冲16 GND - 接地17 SR_DATA 输出位移寄存器数据18 GND - 接地19 SR_CLK 输出位移寄存器时钟20 GND - 接地21 SR_OE 输出移位寄存器输出启用22 GND - 接地23 PTT_TXD_SCM 输入 MIC PTT24 SCM_EN - 未连接25 HOOK_RXD_SCM 输入 HOOK 检测输入26 GND - 接地27 OCXO_ST_G 输出 OCXO 绿色 LED 开关28 PWR_ST_R 输出 POWER 红色 LED 开关29 OCXO_ST_R 输出 OCXO 红色 LED 开关30 SB 输出电源输出31 VOLUME_IN 输入 AF 信号的音量控制输入32 33AUD 输出 3.3V 恒定电压33 33MPU 输出 3.3V 恒定电压34 MIC 输入 MIC 信号输入35 GND - 接地36 MIG - MIC 接地CN4( 至 X45-386 C/5 CN11)1 E - 接地2 NC - 未连接3 SB 输入电源输入4 SB 输入电源输入CN56( 至 X56-312 A/3 CN804)1 GND - 接地2 GND - 接地3 PAG 输出 POCSAG 开关4 GND - 接地5 CONT_5.0V 输出 5V 恒定电压6 D_GND - 接地7 CONT_5.0V 输出 5V 恒定电压8 D_GND - 接地TERMINAL FUNCTION / 端子功能