Lexmark Optra T614 Technical Reference - Page 316
mands to the printer., puter when data is transferred successfully and three lines to report printer
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8-13 Interfaces The following illustration shows the pin assignments for connecting the 25-pin connector to the 36-pin connector. The symbol * indicates an active low signal. Printer Side Computer Side 36-Pin Connector 1284-B 25-Pin Connector Note: Lexmark IEEE 1284 compliant cables are supported up to 20 feet. Cable lengths greater than 20 feet are not supported. The cable drawing to the left is a functional representation of the Lexmark cables; it does not reflect correct pairing of leads or unused pairs. The parallel interface consists of an 8-bit parallel data bus with the following characteristics: • Uses 17 of the 36 positions on the printer connector, as follows: - The host system controls 12 lines, which it uses to send data and commands to the printer. - The printer controls five lines. The printer uses two lines to notify the computer when data is transferred successfully and three lines to report printer status. • Controls synchronization with an externally supplied STROBE* pulse.