Icom IC-F8100 Service Manual

Also see for IC-F8100: Instruction manual Instruction manual Instruction manual Service manual Manual

Contents

Icom IC-F8100 Service Manual Manual pdf 17 page image

4-5PinNo.LineName Description I/O2 LEDC LCD dimmer control. O7 RESET CPU reset.L=The CPU is reset. I17 TXD L-bus communication line to the MAIN CPU. O18 RXD L-bus communication line to the MAIN CPU. I19 LRES LCD driver reset.L=The driver is reset. I27 RXD L-bus wakeup line.L=Wakeup. I28 IOK [ ] input.L=Pushed. I29 P3K [] input.L=Pushed. I30 P2K [] input.L=Pushed. I31 P1K [] input.L=Pushed. I32 DNK [ –] input.L=Pushed. I33 UPK [ +] input.L=Pushed. I34 EMGK [ ] input.L=Pushed. I35 MENK [ ] input.L=Pushed. I36 CALK [ ] input.L=Pushed. I41 LCS LCD driver control.L=Enabled. O42–49 DB0–DB7 LCD driver control. (Parallel data bus) O51 LWR LCD driver control.L=Data write status. O52 LA0 LCD driver control.H=In the address select mode. O55 LRD LCD driver control.L=Data read status. O56 FPWRS 8V power supply line control.H=While the transceiver's power is ON. O57 MGAIN MIC gain control.H=The gain increases +20 dB. O58 T5K [5 JKL] input.L=Pushed. I59 T6K [6 MNO] input.L=Pushed. I60 T7K [7 PRS/CLAR] input.L=Pushed. I61 T8K [8 TUV/CTALK] input.L=Pushed. I62 T1K [1 QZ] input.L=Pushed. I63 T2K [2 ABC] input.L=Pushed. I64 T3K [3 DEF/MODE] input.L=Pushed. I65 T4K [4 GHI] input.L=Pushed. I66 TLK [ ] input.L=Pushed. I67 TRK [ ] input.L=Pushed. I68 CHDK [V] input.L=Pushed. I69 CHUK [U] input.L=Pushed. I70 T9K [9 WXY/TUNER] input.L=Pushed. I71 T0K [0 _] input.L=Pushed. I72 MUTK [ @?/MUTE] input.L=Pushed. IPinNo.LineName Description I/O73 SCNK [# A/a /MNGR] input.L=Pushed. I75 TEMP LCD temperature sensing voltage. I76 MICL MIC input level sensing voltage. IPinNo.LineName Description I/O2 BEEP Beep audio. O3 TCOM Tuner Scan control signal to the automaticantenna tuner. O4 TSTART Motor lock contol signal to the automaticantenna tuner. O10 RESET CPU reset signal.L=The CPU is reset. I16 TXD L-bus wakeup signal from the FRONT CPU.L=Wakeup. I17 CWK CW/FSK keing input.L=Key down. I18 PTT PTT input.L=Pushed. I20 DRXD RX data from the DSP. I21 DCLK Serial clock to the DSP. O22 DTXD TX serial data to the DSP. O23 HSK0 Hand shake signal to the DSP.L=When the command is not granted. I25 FULL ALE/SELCALL data full detect.H=Data full. I26 VSQL Voice squelch detection.L=Voice detected. (Squelch open) I27 GPRXD GPS data (4800 bps). I29 EXTXD External data output. O30 EXRXD External data input. I32 BPST Beep status detection.H=Detected. I33 RXD Data to the front CPU. O34 TXD Data from the front CPU. I35 CK Serial clock to the DDS IC. O36 DT Serial data to/from the DDS IC. I/O42 RD SRAM data read control. O44 WR SRAM data write control. O46 CWST CW status detection.L=While transmitting in the CW mode. I47 TUMBBand switching control.H=When the operating frequency is13.3 MHz and higher.O48 CS0 SRAM chip select control.L=Enabled. O52–70 A16–A0 SRAM control parallel bus. O71 PWS Power supply line "14V" control.H=During the transceiver's power is ON. O73 DSKY Keying output. O74 SEND TX mute.H=Mute. O75 MDA Serial data to the D/A converter, shift reg-ister and electronic volume. O76 MCK Serial clock to the D/A converter, shift reg-ister and electronic volume. O77 ECK EEPROM serial clock. O78 ESIO EEPROM serial data. I/O79–86 D7–D0 SRAM control parallel bus. I/O87 RXS RX power supply line control.H=While receiving. O88 TXS TX power supply line control.H=While transmitting. O90 DCV External power source detect. I91 TEMP TX power AMP temperature sensing volt-age. I92 KEYS External tuner key control. I93 REF Reflected wave sensing voltage. I4-4 PORT ALLOCATIONS• FRONT CPU (DISPLAY UNIT: IC6004)• MAIN CPU (MAIN UNIT: IC1806)