Interconnect Signals
Table 3-4. Connector J2 Interconnect Signals (LCP2 Adapter) (Continued)
Pin | Signal | Signal Name and Description | |
Number | Mnemonic | ||
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20 | PRACK* | DATA ACKNOWLEDGE (Printer) - a low level | |
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| input pulse indicating that the next character | |
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| may be sent. | |
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| |
21 | PRPE | PAPER EMPTY (Printer) - out of paper. | |
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| |
22 | PRBSY | BUSY (Printer) - an input signal indicating that | |
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| the printer cannot receive data. | |
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| |
23 | INPRIME* | INPUT PRIME (Printer) - an output signal that | |
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| clears the printer buffer and initializes the logic. | |
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| |
24 | PRSEL | SELECTED (Printer) - an input signal indicating | |
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| that the printer is selected. | |
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| |
25 | GND | GROUND | |
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| |
26 | PRFAULT* | FAULT (Printer) - an input signal that indicates | |
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| a printer fault condition. | |
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| |
27 | GND | GROUND | |
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| |
28 | TXD3 | TRANSMIT DATA (serial port 3) - data to be | |
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| transmitted is furnished on this line to the | |
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| modem from the terminal. | |
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| |
29 | GND | GROUND | |
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|
| |
30 | RXD3 | RECEIVE DATA (serial port 3) - data that is | |
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| demodulated from the receive line is presented | |
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| to the terminal by the modem. | |
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|
| |
31 | CTS3 | CLEAR TO SEND (serial port 3) - CTS is a | |
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| function supplied to the terminal by the modem, | |
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| and indicates that it is permissible to begin | |
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| transmission of a message. When using a | |
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| modem, CTS follows the | |
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| RTS after a time delay. | |
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|
| |
32 | RTS3 | REQUEST TO SEND (serial port 3) - RTS is | |
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| supplied by the terminal to the modem when it | |
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| is required to transmit a message. With RTS off, | |
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| the modem carrier remains off. When RTS is | |
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| turned on, the modem immediately turns on the | |
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| carrier. | |
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| |
33 | DCD3 | DATA CARRIER DETECT (serial port 3) - sent | |
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| by the modem to the terminal to indicate that a | |
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| valid carrier is being received. | |
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|
3 |
MVME712A/D3 |