For signal description and pin assignment, refer to the
table below:
Table 5. Signal description and pin assignmentSignal | Return | Signal | Direction | Description | |
Pin | Pin | ||||
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| |||
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| |
1 | 19 | STROBE | IN | The STROBE pulses to read | |
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| data. Pulse width must be more | |
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| than 0.5 µseconds at the | |
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| receiving terminal. | |
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| |
2 | 20 | DATA 1 | IN | These signals represent data in | |
3 | 21 | DATA 2 | IN | bits 1 to 8 of parallel data, | |
4 | 22 | DATA 3 | IN | respectively. Each signal is high | |
5 | 23 | DATA 4 | IN | when data is logical 1 and low | |
6 | 24 | DATA 5 | IN | when it is logical 0. | |
7 | 25 | DATA 6 | IN |
| |
8 | 26 | DATA 7 | IN |
| |
9 | 27 | DATA 8 | IN |
| |
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| |
10 | 28 | ACKNLG | OUT | About a | |
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| Low indicates that data has | |
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| been received and that the | |
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| interface card is ready to accept | |
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| more data. This signal is output | |
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| paired together with a BUSY | |
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| signal. | |
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| |
11 |
| BUSY | OUT | A high signal indicates that the | |
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| interface card cannot receive | |
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| data. The signal goes high in | |
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| the following cases: | |
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| 1) During data entry (along | |
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| with each character) | |
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| 2) When OFF LINE | |
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| (or PAUSE) | |
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| 3) During | |
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| |
12 |
| PE | OUT | A high signal indicates that the | |
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| printer is out of paper. | |
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12