Epson ActionLaser 1600, Руководство по обслуживанию

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Printer Features
Table 1-9. Parallel Interface Pin Assignments
Pin Signal
No.
Name
I/O
Description
1
STROBE IN HostClk: This signal is the strobe pulse used to read
request extension values from the host computer during
negotiation.
2-9
DATA 1-8 IN These signals are the data bits for the request extension
values during negotiation. The printer supports following
values:
0000 0100: Request Device ID (in nibble mode sending)
0000 0000: Request nibble mode.
10
ACKNLG
O U T PtrClk: Printer clock for data sending.
11 BUSY OUT PtrBusy: The printer sends data bits 3 and 7 during data
transfer to host computer.
12 PE OUT AckDataReq: The printer sends data bits 2 and 6 during
data transfer to host computer.
13 SLCT OUT Xflag: The printer sends data bits 2 and 6 during data
transfer to host computer.
14 AUTO-FEED IN
HostBusy:
This signal informs the printer of the host
computer’s state. When the signal is HIGH, the host
computer cannot accept data.
15 NC — Not used.
16 GND — Logic ground level.
17 CHASSIS — Connected to the printer chassis. The printer chassis
GND
GND and the signal GND are connected to each other.
18 NC — Not connected.
19-30 GND — Ground level for the twisted pair return signal.
31 INIT
IN
nlnit: Fixed to the HIGH level
32
ERROR
OUT nDataAvail: Printer sends data bits 0 and 4 during data
transfer to host computer.
33 GND — The same as for pins 19 to 30.
34 NC — Not used.
35 +5 —
Pulled up to +5 V through 1.0K-ohm resistance.
36
SLCT IN IN 1284Active: If this signal is set to HIGH, the printer is
active P1284 (reverse mode).
EPSON ActionLaser 1600 Service Manual
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