FUJITSU DL3750+/3850+ User Manual
Page 204
User's Manual
D-2
INTERFACE INFORMATION
Pin
Return
Signal
Direc-
Description
No. Pin No.
name
tion
1
19
Data Strobe
Input
This signal is a strobe pulse
(DSTB)
for reading data (Data 1 to 8).
The printer reads data when this
signal is low. The pulse width
must be 1 µs or more at the
receiving terminal.
2–9
20--27 Data 1 to 8
Input
Data 8 (pin 9) is the most
significant bit; however, this pin
is not used in 7-bit ASCII
communications.
Logical 1 signals must go high at
least 1 µs before the falling edge
of the Data Strobe signal and
must stay high for at least 1 µs
after the rising edge.
10
28
Acknowledge
Output
This pulse signal indicates
(ACK)
that the printer has received data
and is ready to accept the next set
of data.
This signal is also sent when the
printer is switched from offline to
online.
11
29
Busy
Output
Data cannot be received when
this signal is high. This signal is
high during data entry, when the
printer is offline, when the buffer
is full, or when an error occurs.
12
30
Paper Empty
Output
This signal is high when the
(PE)
printer is out of paper.
Compatible Mode