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4 User's Reference
SLCT IN
HIGH*
NC
GND
FAULT
INIT
GND
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
HIGH***
GND
GND
NC
AUTO FEED
SLCT
PERROR
BUSY
ACK
D7
D6
D5
D4
D3
D2
D1
D0
STROBE
Interface Specifications
Parallel Connector
(in compliance with specifications of Centronics)
Signal
number
Signal
number
Terminal
number
Pin Connection
1
19
18
36
3.3K
+5V
=
*
3.9K
+5V
=
***
Standard Bidirectional parallel interface (compliant with IEEE 1284: nibble mode)
Input signals STROBE (1BIT), DATA (8BITS), SLCT IN, AUTO FEED, INIT
Output signals BUSY (1BIT), ACK (1BIT), FAULT, SLCT, PERROR
Level of input output signals TTL level
Transmission method Asynchronous