Citizen Systems CBM-253 - Manual (Page 40)

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 )