A-6 Specifications Appendix APin assignmentsThe following table lists the signals and input/output status of thepin assignments used for parallel communication. (The names inparentheses show the signals when you use the MultiPASS 1000 asa normal printer.)No. Signal I/O No. Signal I/O1 (STROBE) IN 19 STROBE-RET1HOSTCLK2 (DATA 1) IN/OUT 20 DATA 1-RET3 (DATA 2) IN/OUT 21 DATA 2-RET4 (DATA 3) IN/OUT 22 DATA 3-RET5 (DATA 4) IN/OUT 23 DATA 4-RET6 (DATA 5) IN/OUT 24 DATA 5-RET7 (DATA 6) IN/OUT 25 DATA 6-RET8 (DATA 7) IN/OUT 26 DATA 7-RET9 (DATA 8) IN/OUT 27 DATA 8-RET10 (ACKNLG) OUT 28 ACKNLG-RETPTRCLK11 (BUSY) PTRBUSY OUT 29 BUSY-RET12 (P.E.) OUT 30 PAPER END-RETACK DATA REQ13 (SELECT) XFLAG OUT 31 (INIT) IN14 (AUTO FEED XT2) 32 (ERROR) OUTHOST BUSY DATA AVAIL15 NO CONNECTION 33 GND16 GND 34 NO CONNECTION17 GND 35 +5.0V3 OUT18 PERIPHERAL 36 (SELECT IN2)LOGIC HIGH4 1284 ACTIVE1 All RETs are connected to GND.2 These signals are valid only in Epson LQ printer control mode.3 The level is raised to +5.0V at 3.3k Ω register.4 The level is raised to +5V at 390 Ω register.
