
TITLE : RP-300/310
Page -13 -
2.1.6 Centronics parallel interface
1) Specifications
Data transmission:
8-bit parallel
Synchronization:
STROBE pulse supplied by host computer.
Handshaking:
ACK and BUSY
Connector:
D-SUB 36(female) or equivalent
DATA Data n
Data n+1
tHold
nStrobe
tSetup tSTB
Busy Peripheral Busy
tReady tBUSY
nAck
tReply tACK tnBUSY
PIN
SIGNAL
I/O
DESCRIPTION
1
STROBE-
Input
Synchronize signal Data received
2-9
DATA0-7
Input
Data bit Transmitted 0-7
10
ACK-
Output
Data receiving competed
11
BUSY
Output
Impossible to printer data receiving
12
PE
Output
Paper empty
13
SELECT
Output
Printer’ s status for ON/OFF line
14
AUTO FEED-
Input
ND
15
GROUND
-
System Ground
16
GROUND
-
System Ground
17
NC
-
18
LOGIC-H
-
+5V
19-30
GROUND
-
System Ground
31
INIT-
Input
Initialize
32
ERROR-
Output
Printer Error
33
GROUND
-
System Ground
34
NC
-
35
+5V
-
+5V
36
SELECT IN-
Input
ND