Icom IC-V8000 Service Manual

Also see for IC-V8000: Instruction manual Service manual Optional instructions Instruction manual

Contents

4 - 4Pin Port Descriptionnumber namePin Port Descriptionnumber name4-5 PORT ALLOCATIONS4-5-1 CPU (LOGIC UNIT: IC7)1911121415161719202122232632–3536–39404144454749–5153DETORESETCSHIFTSCKSOPTTCLINCLOUTNOISCOLORDIM1DIM0REMOUNLKCOM4–COM1KR3–KR0EXTMICOPV2PLLSTBPLLCKEXSTBOPV3OPT1–OPT3DUSEInput port for the weather alert signaldetection.Input port for reset signal.Outputs reference oscillator for theCPU control signal.Outputs serial clock signal to theexpander IC (MAIN unit; IC2, pin 3),D/A convertor IC (MAIN unit, IC5, pin7), etc.Outputs serial signals to the D/A con-vertor IC (MAIN unit; IC5, pin 8),etc.Input port for the [PTT] switch.High : While [PTT] switch is pushed.Input port for the cloning signal.Outputs the cloning signal.Input port for noise signals (pulsetype).Outputs LCD back light color controlsignal.Low : While choosing umber color.Outputs LCD contrast control signal.Input port for the remote signals froma remote microphone (HM-133V) viathe [MIC] jack.Input port for PLL unlock signal fromthe PLL IC (MAIN unit; IC1, pin 14).Outputs LCD common signals.Input port for initial matrix.Low : While keys are pushing.Input port for the remote control micro-phone (HM-133V) connecting detec-tion.Low : While HM-133V is connected.Input port for the optional unit detec-tion signal.Outputs strobe signals to the PLL IC(IC1, pin 4).Outputs PLL IC (IC1, pin 2) clock sig-nal.• Outputs strobe signal to theexpander IC (IC2, pin 1).• Input port for the optional unit detec-tion signal.I/O port for optional unit control signal.Outputs low-pass filter cut-off frequen-cy control signal when DTCS is acti-vated.545556–8890919596979899100Outputs EEPROM (LOGIC unit; IC5,pin 6) clock signal.I/O port for the data signals from/to theEEPROM (LOGIC unit; IC5, pin 5).Output LCD driver signals.Outputs CTCSS and DTCS tone sig-nal.Outputs DTMF, BEEP and 1750 Hztone signal.Input port for the squelch level detec-tion.Input port for the microphone up/downsignal while connecting the micro-phone.Input port for the RSSI detection.Input port for the PLL lock voltage.Input port for the power detector volt-age.Input port for the transceiver’s internaltempareture detection.ESCKESDASEG1–SEG32CTCCTONESQLVMICUDSDLVINPDETTEMP