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| INV |
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VRT | R1 |
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| R/2 |
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| (LSB) | |
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| R | 0 |
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| P1D0 |
| R |
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| P1D1 | |
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| 1 | 6 bits |
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| P1D2 | |
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| R |
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| 8 bits | LATCH A | 8 bits | TTLOUT | P1D3 |
| R | 63 |
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VRM3 |
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| P1D4 | |||
| R | 64 |
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| 65 |
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| P1D5 |
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| 6 bits | LATCH + ENCODER |
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| P1D6 |
| R |
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| R | 126 | ENCODER |
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| P1D7 | |
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VRM2 | R | 127 |
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VIN | R | 128 |
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| 129 |
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| P2D0 | ||
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| 6 |
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| R |
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| P2D1 |
VRM1 | R | 191 |
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| P2D2 |
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| R | 192 |
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| LATCH B | 8 bits | TTLOUT | P2D3 |
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| 193 | 6 bits |
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| P2D4 | |||
| R |
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| P2D5 |
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| R |
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| P2D6 | |
| R/2 | 255 |
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VRB |
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| P2D7 |
| R2 |
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| (MSB) |
(ECL) |
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CLK |
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| DELAY |
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(TTL) |
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| 1/2 |
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(ECL) |
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| TTL | CLK OUT |
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| OUT | ||
NRSET |
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| SELECTOR |
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(TTL) |
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| SELECT |
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| Fig. |
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