A. Specifications
❏ | Parallel interface specifications |
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• | Input connector |
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| 1817 1615141312 1110 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
| 3635 3433323130 2928 2726252423 22 212019 |
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| SIGNAL | IN/OUT | PIN |
| SIGNAL | IN/OUT | ||||
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| 1 |
| STROBE | IN | 19 |
| GND |
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| 2 |
| DATA 1 | IN | 20 |
| GND |
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| 3 |
| DATA 2 | IN | 21 |
| GND |
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| 4 |
| DATA 3 | IN | 22 |
| GND |
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| 5 |
| DATA 4 | IN | 23 |
| GND |
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| 6 |
| DATA 5 | IN | 24 |
| GND |
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| 7 |
| DATA 6 | IN | 25 |
| GND |
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| 8 |
| DATA 7 | IN | 26 |
| GND |
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| 9 |
| DATA 8 | IN | 27 |
| GND |
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| 10 |
| ACK | OUT | 28 |
| GND |
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| 11 |
| BUSY | OUT | 29 |
| GND |
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| 12 |
| PE | OUT | 30 |
| HIGH |
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| 13 |
| SELECT | OUT | 31 |
| INITIAL | IN | |||||
| 14 |
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| IN | 32 |
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| OUT | |
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| AUTOFEED |
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| ERROR |
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| 15 |
| HIGH |
| 33 |
| HIGH |
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| 16 |
| LOW |
| 34 |
| NC |
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| 17 |
| CHASSIS GND |
| 35 |
| HIGH |
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| 18 |
| HIGH |
| 36 |
| SELECT IN | IN | |||||
Notes: |
| 1. HIGH is pulled up to + 5V by 2.2k Ω resistor. |
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2.LOW is pulled down to GND by 2.2kΩ resistor.
3.NC stands for no connection.
4.CHASSIS GND and GND are connected in the printer.
5.SELECT IN signal is HIGH to accept a control code.
Bidirectional (IEEE1284 Nibble mode) is available.
•Data input timing chart and input condition
Data input |
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STROBE |
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DATA |
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BUSY |
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ACK |
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| 1 ∝s |
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| 0 ∝s min. |
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| max. | |||
1 ∝s min. | 1 ∝s min. | 7 - 10 ∝s | ||
Initialization |
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INITIAL |
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BUSY |
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ACK |
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| 50 ∝s max. |
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| 50 ∝s min. |
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| 7 - 10 ∝s |
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| 100 |
+5V |
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AUTO FEED | 2.2k | 74LS04 | |
SELECT IN | |||
or equivalent | |||
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Input |
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| +5V |
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STORBE | 2.2k | 74LS14 | |
| or equivalent | ||
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Input | 100 |
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| 330pF |
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| +5V |
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INITIAL | 2.2k | 74LS14 | |
or equivalent | |||
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Input | 100 |
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| 1000pF |
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| Inside printer |
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