CBM-253 User’s Manual
28
CITIZEN
5.2 Parallel
interface
Specifications (Conform to Centronics)
Data transmission format
: 8-bit parallel
Synchronizing system
: According to the strobe pulses
Handshaking
: According to the BUSY signal
Signal level
: TTL level
Compatible interface connectors
Printer side
: Ribbon connector 57-40360 (DDK) equivalent product
Cable side
: Ribbon connector 57-30360 (DDK) equivalent product
Connector' s pin configuration
Connector pin
Signal name
Input/output
Function
l *STB
Input
Strobe
signal
2~9 DATA
1-8
Input
Input
data
10
*ACK
Output
Request for next data
11
BUSY
Output
Processing is taking place
12
PE
Output
Paper end
13 (See note)
+5V
Output
+5V DC
14-15
N/C
16 GND
Ground
17
FG
Frame ground
18
N/C
19-30
GND
Twisted pair return signals
31 *RESET
Input
Reset
32
* FAULT
Output
Error
33 GND
Ground
34
COMPULSION
Output
COMPULSION signal
35 (See note)
+5V
Output
+5V DC
36
N/C
The * mark represents a negative logic.
N/C means not connected.
Note: Shied type cables should be used.
Note: Pins 13 and 35 can not be used by the user (Pulled up by 3.3K )
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