Stylus C40UX/C40SX/C20UX/C20SX | Revision A |
Pin No. | Signal Name | GND pin | In/Out | Functional description | |
Return | |||||
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17 | Chassis GND | - | - | Chassis GND. | |
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16, 33 | GND | - | - | Signal GND. | |
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15, 34 | NC | - | - | Not connected. | |
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*In/Out refers to the direction of signal flow from the printer's point of view.
1.4.3Parallel Interface (Reverse Channel)
| Transmission mode | : | ||||
| Adaptable connector | : See forward channel | ||||
| Synchronization |
| : Refer to the | |||
| Handshaking |
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| Data trans. timing | : Refer to the | ||||
| Signal level |
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| See forward channel | |
Connector pin assignment and signals : |
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Pin No. |
| Signal Name | ReturnG | In/ | Functional description | |
| ND Pin | Out* | ||||
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1 |
| HostClk |
| 19 | In | Host clock signal. |
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Pin No. | Signal Name | ReturnG | In/ | Functional description | |
ND Pin | Out* | ||||
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2 | DATA0 | 20 | In | The DATA0 through DATA7 signals | |
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| represent data bits 0 to 7, respectively. | |
3 | DATA1 | 21 | In | ||
Each signal is at high level when data is | |||||
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4 | DATA2 | 22 | In | logical 1 and low level when data is logical 0. | |
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| These signals are used to transfer the 1284 | |
5 | DATA3 | 23 | In | ||
extensibility request values to the printer. | |||||
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6 | DATA4 | 24 | In |
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7 | DATA5 | 25 | In |
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8 | DATA6 | 26 | In |
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9 | DATA7 | 27 | In |
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10 | PtrClk | 28 | Out | Printer clock signal. | |
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11 | PtrBusy / | 29 | Out | Printer busy signal and reverse channel | |
transfer data bit 3 or 7. | |||||
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12 | AckDataReq / | 28 | Out | Acknowledge data request signal and reverse | |
channel transfer data bit 2 or 6. | |||||
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13 | Xflag / | 28 | Out | ||
data bit 1 or 5. | |||||
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14 | HostBusy | 30 | In | Host busy signal. | |
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31 | 30 | In | Not used. | ||
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32 | 29 | Out | Data available signal and reverse channel | ||
transfer data bit 0 or 4. | |||||
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36 | 30 | In | 1284 active signal. | ||
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18 | - | Out | Pulled up to +5 V via 3.9 K ohm resistor. | ||
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35 | +5V | - | Out | Pulled up to +5 V via 3.3 K ohm resistor. | |
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17 | Chassis GND | - | - | Chassis GND. | |
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16, 33 | GND | - | - | Signal GND. | |
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15, 34 | NC | - | - | Not connected. | |
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* In/Out refers to the direction of signal flow from the printer's point of view.
PRODUCT DESCRIPTION | INTERFACE | 15 |
