J4 Engine Board
Pin No. | Signal |
| Pin No. | Signal |
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1 | NO CONNECTION |
| 16 | CMD |
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2 | NO CONNECTION |
| 17 | CTBSY |
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3 | NO CONNECTION |
| 18 | |
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4 | NO CONNECTION |
| 19 | SRCLK |
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5 | GND |
| 20 | GND |
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6 | RESET* |
| 21 | GND |
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7 | GND |
| 22 | R VIDEO* |
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8 | GND |
| 23 | +5 V dc |
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9 | GND |
| 24 | GND |
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10 | RHSYNC* |
| 25 | +5 V dc |
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11 | EPRDY* |
| 26 | GND |
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12 | PRRDY* |
| 27 | +5 V dc |
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13 | TOD* |
| 28 | CPRDY |
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14 | ETBSY* |
| 29 | +5 V dc |
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15 | STS* |
| 30 | NO CONNECTION |
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Connector | Pin No. | Signal |
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J3 Pullup Power | 1 | +5 V dc |
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| 2 | +5 V dc JUMPER |
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| 3 | NO CONNECTION |
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Connector Locations
