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internal block diagram of ics


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5. INTERNAL BLOCK DIAGRAM of Ics
IC101 DBL 1018 (LA 1140)

                                                                                                          IF     Quad       V
                                           vcc                                                            Out    In         ref

                                              12                                                          9      11          13



                                  VOLTAGE
                                  REGULATOR                                                                                                      AFC
                                                                                                                                                 CLAMF              7 AFC




    IF Input   1     1st          2nd              3rd       4th        5th             6th         OUAD                 OUADRATURE
                     Amp          Amp              Amp       Amp        Amp             Amp         LIMITER              DETECTOR
               2
       Bias
               3

                                                                                                                                                 AF                   AF
                                                                                                                                                                    8 Output
                                                                                                                                                 MUTE
                                                                                                                                                 Amp                5 Mute
                         LEVEL                     LEVEL                LEVEL                                 HOLE     DC LEVEL                                       Attenuation
                                                                                              INVERTER                                                                Adjust
                         DETECTOR                  DETECTOR             DETECTOR                              DETECTOR DETETOR


       GND     4
                                                                         SIGNAL
                              AGC                                                                               MUTE
                                                                         METER
                              DRIVE                                                                             DRIVE
                                                                         DRIVE


                         16                                                   15                                 14               10              6
                      AGC                                                  Signal                                Mute             GND            Mute
                                                                           Meter                                 Drive                           Input
                                                                           Output




IC201 DBL 1019 (LA1135)

                   Local OSC          Local          Local       IF            Signal           Signal                     Detector                      Detector
                   Butter Out         OSC2           OSC1        AGC          Meter Out        Meter In         V            Out         GND                In
                                                                                                                 CC
                      20              19             18            17              16               15           14          13           12               11




                                                                                                                                            IF
                                                                                                                                         DETECTOR
                   LOCAL
                                           LOCAL                IF                      SIGNAL
                   OSC
                                           OSC                  AGC                     METER
                   BUFFER



                                 ALC


                               RF DETECTOR




                                                                                                                                               IF
                   RF                                ATTENUATOR                                      MIX
                                  RF                                           RF                                                             AMP
                   AGC                                 DRIVER
                                 AMP2                                         AMP2




                     1                2              3             4            5               6               7             8           9                10
                   RFAGC         RFAmp2             RF       ANT Damping       GND         MIX in &             MIX         VCC         IF Amp           IF Amp
                    Out            In               AGC         Driver                    RF AMP1 In            Out                        In              Out




                                                                                    - 11 -
  IC301 KIA6043S
                                                                     L.P.F-1                 VCO ADJUSTMENT




                                                          6.6V                            7.1V
                                                                    2                4


                             1    AF             PHASE                    DC
       INPUT                                     DETECTOR                                    VCO 76kHz               1/2                     1/2
                      3.5V
                                                                          19kHz<90



                                                 PILOT                           TRIGGER                       STEREO
                                                 DETECTOR                                                      SWITCH                        1/2


                                                                               19kHz<0
                                            STEREO                                                                         STABILZED
                                            DECODER                            38kHz                                       POWER SUPPLY

                                                 4V           4V              7.4V
                                            8             9               7                         6                      5                        3
                                  LEFT                        RIGHT           L.P.F-2                                           GND
                                                                                                                                0V                      8V
                                                                                             SW2



                                                                                                         LED
                                                                    SW1                      COUNTER
                                                                                             38kHz CHECK                                                V
                                                OUTPUT                                                                                                   CC
                                                                                        FC
                                                                                                                     SW1 VCO STOP SWITCH
                                                                                                                     SW2 38kHz MONITOR SWITCH


  IC401 KIC9256P

                                                                                                                    VDD                     GND
                         FM L                                                                                        9                       12
                                                                   PSC
                AMP
     FM IN 11            1/2             2 MODULUS                      4 bit SWALLOW                          POWER ON
                                         PRESCALER                         COUNTER                               RESET
                         FMS       HF                                                                                      RESET
     AM IN 10
                                                                                                                               COMPARATOR




                                                                         12 bit PROGRAMMABLE COUNTER                                               TRI-STATE        15 DO1
                                            FM        MODE LF                                                                                       BUFFER
                                                                                                                                 PHASE




                                                                                          12
                                                                           4
       XT   2           OSC
                                                      REFERENCE COUNTER                                                                            TRI-STATE
                        CIRCUIT                                                                                MAX                                  BUFFER          16 DO2
       XT                                                                                          15                                                                   (DO2/OT-4)
            1
                                            1mS OSC                                                                  4                               OT4
                                                                     24bit REGISTER                                        UNLOCK


     DATA 5
                                                                                                                                                         1/0 PORT




                                                                                                                                       5                                1/0-5/CLK
                                                                   24bit SHIFT REGISTER
    CLOCK   4                                         8                                                                                                                 1/0-6
                                                              TEST                                              5
                                                ADDRESS
                                                                                     24             22
                                                DECODER
   PERIOD 3                                                                                             10
                                                                     24bit REGISTER                                                                                 13 1/0-9 IFIN2
                                                                                                                                                                        (1/0-6 IF IN2 )
                                                      4              4                                                                                      AMP
                                                                                 20bit BINARY COUNTER                                                                   1/0-8 IF
                                                                                                                                                                               IN1
                                                                                                                                                                    14 (1/0-5 IF
                                            OUTPUT PORT                       UNIVERSAL COUNTER CONTROL
                                                                                                                                                            AMP                  IN1 )
                                                                                                                                     GATE
                                                                                                                                                                        1/0-7 SC IN
                                                                   OT-4
                                                                                     XT             1mS
                                           6      7   8
                                          OT-1 OT-2 OT-3 OT-4


Note: Mark terminals are not existence in KIC9256P, KIC9256F
      Terminal name of KIC9256P, KIC9256F is shown in parentheses.
      Others are common terminals.


                                                                              - 12 -
IC402 



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