Icom IC-PCR1500 Service Manual

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Icom IC-PCR1500 Service Manual Manual pdf 18 page image

4 - 7PinNo.PORTNAME DESCRIPTION4 BMST2 Outputs strobe signal to the expander (MAIN-BUNIT; IC18, pin1).5 BCK Outputs clock signal to the expander (MAIN-BUNIT; IC17, pin 3).8 BMST1 Outputs strobe signal to the expander (MAIN-BUNIT; IC3, pin1).9 CSHIFT Outputs clock frequency shift signal to theclock shift circuit (D6).16 NOIS Input port for “NOIS” signal from the IF IC(MAIN-A UNIT; IC24, pin 13).17 BNOIS Input port for “BNOISE” signal from the IF IC(MAIN-B UNIT; IC24, pin 13).18 PWRSW Input port for power witch (CHASSIS; S1).“Low”=While the power switch is turned.19 BMST3* Outputs strobe signal to the expander (MAIN-BUNIT; IC17, pin 1).20 CCSOutputs optional unit select signal to theattached optional unit via the pin 20 of J2018.“High”=While the optional unit is attached.21 BP1STB* Outputs PLL strobe signla to the 1st PLL IC(MAIN-B UNIT; IC10, pin 11).22 BP2STB* Outputs PLL strobe signla to the 2nd PLL IC(MAIN-B UNIT; IC13, pin 13).23 BDSTB* Outputs strobe signal to the D/A converter(MAIN-B; IC8, pin 6).27 PDIN Input port for USB data.28 PDOUT Outputs USB data.31 SCL Outputs clock signal to the EEPROM (IC14, pin 5).33 OPSO Output serial data to the attached optional unitvia the pin 18 of J2018.34 OPSI Input port for serial data from the attachedoptional unit via the pin17 of J2018.35 OPSCK Outputs clock signal to the Attached optionalunit via the pin 16 of J2018.36 AIRQ Input port for data request signal from theattached UT-122 via the pin 19 of the J2017.37 ASTB Outputs strobe signal to the attached UT-122via the pin 20 of the J2017.38 ASI Input port for serial data from the attachedUT-122 via the pin 17 of the J2017.39 ASO Outputs serial data to the attached UT-122 viathe pin 18 of the J2017.40 ACK Outputs clock signal to the attached UT-122 viathe pin 16 of the J2017.41 DSPS Outputs DSP select signal to the attached DSPunit via pin 7 of J15.42 IMST Outputs DSP strobe signal to the attachedDSP unit via pin 3 of J15.43 BUSY Outputs busy signal to the attached optionalunit via pin 7 of J7.44 SDL I/O port for EEPROM (IC14, pin 6).45 OPAFSELOutputs control signal to the AF switch (IC23,pin 5).“High”=While the optional unit is activated.46 OPAFINHOutputs control signal to the AF switch (IC23,pin 2).“High”=The AF line for the optional unit is dis-connected.47 BOPAFSEL*Outputs control signal to the AF switch(IC2031, pin 5).“High”=While the optional unit is activated.48 BOPAFINH*Outputs control signal to the AF switch(IC2031, pin 2).“High”=The AF line for the optional unit is dis-connected.PinNo.PORTNAME DESCRIPTION49 RXMUTEInput port for mute signal from the attachedoptional unit via the pin 24 of J2018.“High”=While the audio output is muted.53 APAFSELOutputs control signal to the AF switch (IC4,pin 5).“High”=While the UT-122 is in use.54 APAFINHOutputs control signal to the AF switch (IC4, pin2).“High”=While the attached UT-122 is inactivated.57 VDAT Outputs serial data to the electric volume(IC17, pin 16).58 VCK Outputs clock signal to the electric volume(IC17, pin 15).59 VSTB Outputs strobe signal to the electric volume(IC17, pin 14).61 LSTB Outputs strobe signal to the expander (IC34,pin 1).64 PWROutputs control signal to the power controller(Q4, Q6).“High”=While the receivers power is ON.65 DTMSTDInput port for detecting signal from the DTMFdecoder (IC19, pin 14).“High”=When the DTMF signal is detected.66 DTMSD Input port for DTMF signal from the DTMFdecoder (IC19, pin 9).67 DTMCK Outputs clock signal from the DTMF decoder(IC19, pin 11).70 PDSTB Outputs strobe signal to the DDS IC (MAIN-AUNIT; IC22, pin 41).73 VBUSInput port for USB connection detecting signalfrom the VBUS line.“High”=While a PC is connected through [USB] con-nector on the receiver's main unit.75 DSTB Outputs strobe signal to the D/A converter(MAIN-A; IC8, pin 6).76 P2STB Outputs strobe signal to the 2nd PLL IC(MAIN-A UNIT; IC13, pin 13).77 P1STB Outputs strobe signal to the 1st PLL IC(MAIN-A UNIT; IC12, pin 11).78 DPSTB Outputs strobe signal to the down converterPLL IC (MAIN-A UNIT; IC4, pin 11).79 MST0 Outputs strobe signal to the expander (MAIN-A;IC3, pin 1).80 MST1 Outputs strobe signal to the expander (MAIN-A;IC18, pin 1).81 MST2 Outputs strobe signal to the expander (MAIN-A;IC3, pin 1).82 BCMAD* Input port for RSSI signal from the RSSI signalselector (MAIN-A; IC30, pin 1).83 BVSCAF* Input port for VSC signal from the tone filter(IC2021, pin 7).85 BRTONE* Input port for CTCSS signals from the tonefi lter (MAIN-B UNIT; IC21, pin 1).86 BSMAD* Inputpor t for RSSI signal from the IF IC(MAIN-A/B UNITS; IC16, pin 13).88 TEMP Input port for internal temperature detection.89 SCAD Input port for RSSI signal from the IF IC (MAIN-A/B UNITS; IC20, pin 5) for band scope function.90 CMAD Input por t for RSSI signal from the IF IC(MAIN-A UNIT; IC30, pin 1) for AFC function.91 VSCAF Input port for VSC signal from the tone filter(IC21, pin 1).93 RTONE Input port for CTCSS signals from the tonefi lter (MAIN-A UNIT; IC21, pin 7).98 USBPOWOutputs voltage line control signal to the 3.3Vregulator (IC1, Q31, Q32, Q33).“High”=During in the USB audio mode.4-5 CPU PORT ALLOCATION4-5-1 CPU (LOGIC UNIT; IC18)*PCR2500 only