Rockhopper II series printers – Maintenance Manual
33
AP-74065, Rev. 1.2, 27/09/04
3.3. INTERFACE SPECIFICATIONS
This section explains the specifications for the interfaces supported by this product.
3.3.1. Centronics Bidirection Parallel Interface:IEEE1284)
(1) Interface Specifications
Item
Specifications
Transmission modes
Compatible , Nibble , ECP Mode
Data length
8 bits
Transmission direction
Unidirectional (receiving only), Bidirectional
Connector pin number
(2) Table of parallel interface pin numbers and signals
Pin
number
Connection
signal
Signal direction
Pin
number
Connection signal
Signal
direction
1 STROBE
To
printer
Å
19
SG
2
DATA1
To and from printer
Å
Æ
20
SG
3
DATA2
To and from printer
Å
Æ
21
SG
4
DATA3
To and from printer
Å
Æ
22
SG
5
DATA4
To and from printer
Å
Æ
23
SG
6
DATA5
To and from printer
Å
Æ
24
SG
7
DATA6
To and from printer
Å
Æ
25
SG
8
DATA7
To and from printer
Å
Æ
26
SG
9
DATA8
To and from printer
Å
Æ
27
SG
10 ACK
From
printer
Æ
28
SG
11 BUSY From
printer
Æ
29
SG
12
P ERROR
From printer
Æ
30
SG
13 SELECTED
From
printer
Æ
31
INIT
To
printer
Å
14 AUTOFD To
printer
Å
32
FAULT
From
printer
Æ
15
Not connected
33
Not connected
16 SG
34
Not
connected
17 FG
35
Not
connected
18 +5V
36
SELECTIN To
printer
Å
(3) Recommended Centronics cable specifications
Item
Specifications
Interface Dual-direction
Parallel Interface:IEEE1284
Structure
AWG28×18 (twisted pair wiring)
Shield construction
Metallic tape + weaving (double shielded cable)
Characteristic impedance
62
Ω
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