Fujitsu DL6400Pro User Manual page 180

Pin Return Signal
number pin Compatible mode
number
32 — Fault
Data Available
33 — Signal Ground
(SG)
34 — —
35 — +5 VR
36 — SLCT-IN
User's Manual
Table C–1 Parallel interface signals (Continued)
Direction
Nibble mode
Output
—
—
Output
Input
1284 Active
Notes:
1. Left-aligned signal names are in compati mode and right-aligned
ones are in nibble mode.
2. The direction (input and output) refers to the printer.
3. Return line: Twisted-pair return line connected to the signal
ground level.
Description
This signal goes low under the following
printer conditions:
(1) Offline
(2) Paper out
(3) Cut-sheet feeder error
(4) Other printer error
Reverse data transfer phase:
This signal is set low when the printer is
ready to send data to the host. During
the data transfer, it is used as data bit 0
(LSB), then data bit 4.
Reverse idle phase:
This signal is used to indicate that data is
available.
Logic ground level (0 V)
No connection
Pulled up to +5 V through a 3.3 k
resistor
Not used
This signal goes high to cause the printer
to enter the reverse data transfer phase
(nibble mode).
Parallel Interface
INTERFACE
INFORMATION
C-5