Parallel Interface; Port Pin Assignment - Mita DP-2800 Service Manual

Parallel interface

The printer uses a bi-directional parallel interface for high-speed data transmission for the
host computer. This interface includes the buffers which are compatible with the IEEE 1284
standards. The parallel interface provides support for the ECP and nibble modes in this
standards.

Port pin assignment

The pins of the parallel interface connector carry the signals listed below.
No. Terminal
1 nStrobe
2 Data1
3 Data2
4 Data3
5 Data4
6 Data5
7 Data6
8 Data7
9 Data8
10 nAck
11 Busy
12 PError
13 Select
14 nAutoFd
15 Not defined
16 Logic ground
17 Chassis ground
18 Peri-logic power (VCC)
*: Negative logic
**: Maximum rated current for pin 18 is 0.25A (fused).
***: Pin 17 is grounded through a chip bead or a chip resistor.
Signal No.
(STBIN1/2*)
(PAD0)
(PAD1)
(PAD2)
(PAD3)
(PAD4)
(PAD5)
(PAD6)
(PAD7)
(ACKOUT)
(BUSYOUT)
(PERROR)
(SELECT)
(AUTOFD*)
NC
GND
(GND)
Terminal
19 Ground
20 Ground
21 Ground
22 Ground
23 Ground
24 Ground
25 Ground
26 Ground
27 Ground
28 Ground
29 Ground
30 Ground
31 nInit
32 nFault
33 Not defined
34 Not defined
35 Not defined
36 nSelect In
5A2
Signal
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
(INIT*)
(FAULT*)
Pull-up (1kW)
NC
Pull-up (1kW)
(SELECTI*)
A-1