04446.pdf

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DMP 2102
(260-2817)
SIGNAL
DATA STROBE -N
DATA BIT 1
─┐
│
DATA BIT 2
│
│
DATA BIT 3
│
│
DATA BIT 4
├─
│
DATA BIT 5
│
│
DATA BIT 6
│
│
DATA BIT 7
│
│
DATA BIT 8
─┘
ACKNOWLEDGE -N
BUSY
Pinouts
SIGNAL DIRECTION
TO PRINTER
Faxback Doc. # 4446
FUNCTION
PIN NUMBER
1
2
3
4
5
6
7
8
9
10
11
Samples the input data when
changing from low to high.
TO PRINTER
Indicates the input data. High
level signal shows a 1, and low
level signal shows a 0.
FROM PRINTER
FROM PRINTER
12
13
PAPER END
BUSY -N
SELECT
FROM PRINTER
FROM PRINTER
FROM PRINTER
At a low level, indicates that
a character input is complete
or that a function operation is
finished. At a high level, data
reception is impossible. At a
low level, data reception is
possible.
At a high level, indicates
paper end.
Tandy mode: At a low level,
data reception is impossible.
At a high level, data reception
is possible.
IBM mode: At a high level,
indicates that the printer is
in select mode (data reception
possible).
Tandy mode
IBM mode
Signal ground
14
16
17
18
NC
AUTO LF -N
OV
CHASSIS GROUND
+5V
NC
FRAME GROUND
FROM PRINTER
--
Tandy Mode: +5V power supply
(Max. 50 mA)
IBM mode
Twisted pair return (for pins
#1 through 11).
19-30
31
OV
NC
--
Tandy mode
INPUT PRIME-N
TO PRINTER
IBM Mode:When this goes low,
the printer control section is
initialized. The low level
period should be more than 0.5
ms.
This signal goes from high to
low lever when paper end.
Tandy Mode
IBM Mode
Unused pine (No connection)
Tandy Mode
IBM Mode
Tandy Mode
IBM Mode
32
33
15,34
35
36
FAULT-N
INIT
OV
NC
NC
Pulled High
NC
SLCTIN-N
FROM PRINTER
TO PRINTER
--
--
--
--
--
--
* IBM interface mode is achieved by moving jumpers located inside the print-
er. See your local Radio Shack Service Center for this change.
* Parallel Interface Level
low level 0.0V ~ +0.8V
high level +2.4V ~ +5.0V
(jlc-07/26/93)

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