6-21. IC BLOCK DIAGRAMS
IC101 BA1450 (MAIN BOARD)
AM OSC OUT | V . REG | AM OSC | FM BAND WIDTH | AM RF IN | AM MIX OUT | AM IF IN | AM AGC | FM/AM DET OUT | AM MPX IN | FM MPX IN | VCO STOP |
24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 |
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| OSC |
| MIX |
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| VREG |
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| SD |
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| AM | AGC |
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| DET |
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| SW | 1/2 |
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| PD |
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| LED |
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| DECODER | VCO | |
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| DET |
| DRIVER | COMP |
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| SD |
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| DET |
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1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
FM IN | VCC | FM SD ADJ | GND | FM DET | TUNED | STEREO | REQ MUTE | IF OUT | R OUT | L OUT | AM/FM |
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IC102 LC72130 (MAIN BOARD)
XOUT | VSS | AOUT2 | AIN2 | PD2 | PD1 | AIN1 | AOUT1 | VDD | FMIN | AMIN | I02 |
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24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 |
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| SWALLOW COUNTER |
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| 1/16.1/17 4bits |
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| POWER |
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| REFERENCE |
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| ON | 1/2 |
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| DIVIDER |
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| RESET |
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| SWALLOW COUNTER |
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| 1/16.1/17 4bits |
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| REFERENCE |
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| DIVIDER |
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| PHASE DETECTOR |
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| CHARGE PUMP |
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| C 2 B |
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| DATA SHIFT REGISTER |
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| C | B | ||
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| I / F |
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| LATCH |
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| I / F | ||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
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XIN | B05 | CE | D1 | CL | D0 | B01 | B02 | B03 | B04 | I01 | IFIN |
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