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IC131 |
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| RW/ROM |
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| 30 | DC OFST |
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| 29 | RFDCI |
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| B | – |
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| + | 28 | RFDCO | ||
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| C | + | |||
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| DVC |
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| D | DVC |
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| VCC |
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| VOFST | RW/ROM |
| 27 | VC |
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LD | 1 | VC |
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| 26 | RFC |
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| EQ | 25 | VFC |
PD | 2 | APC AMP |
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| 24 | BST |
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| EQ ON/OFF |
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EQ IN | 3 |
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| RFAC | 23 | RFG |
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AC SUM | 4 |
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| VCC | 22 | VCC | |
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| AMP |
| B | VOFST |
| 21 | CEI |
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| C | – |
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GND | 5 |
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| A | – |
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| + | 20 | CE | ||||
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| D | + | |||
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A | 6 | A |
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| VC |
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B | 7 |
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C |
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C | 8 |
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D |
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D | 9 |
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| 19 | TE BAL | ||
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E | 10 |
| GM |
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| 18 | TE |
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F | 11 |
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SW | 12 |
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RW/ROM |
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DVCC | 13 |
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| DVC |
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| VOFST |
| 17 | FEI | |
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DVC | 14 |
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| A |
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| + | 16 | FE | ||||
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| C |
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| DVC |
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| VC |
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RFAC | 15 |
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| RW/ROM |
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IC631 BA6956AN (MAIN BOARD)
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| TSD |
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| CONTROL LOGIC |
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1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
VREF | OUT2 | RNF | OUT1 | VM | VCC | FIN | GND | RIN |
22