Section 7: Interface Specifications
Page 7-8
LD610 User’s Technical Reference
7.3 IEEE 1284 PARALLEL INTERFACE (cont’d)
7.3.3 Input/Output Signals
The details of each signal line for the Centronics standard (Compatible Mode) are as follows.
Note that each signal line complies with the IEEE1284 standard.
Signal
I/O
Description
STROBE
Input
Synchronization signal that requires low active pulse to read
DATA1 ~ DATA8
DATA 1 ~ DATA 8
Input
Data entry of 8bits parallel:
DATA1 --LSB (lowest bit)
DATA8 --MSB (highest bit)
ACK
Output
Low active pulse signal indicating the completion of receive data
import
BUSY
Output
High active signal indicating that the printer is not ready to
receive data
PE
Output
High active signal indicating paper shortage
SELECT
Output
High active signal indicating that the printer is ready to receive
data
AUTOFD
Input
Signal for the IEEE1284 standard
CHASSIS GND
Connecting to framework ground
PERIPHERAL LOGIC
HIGH
Output
+5V voltage on the printer side
SIGNAL GND
Connecting to each signal ground
INIT
Input
Low active pulse signal requesting to reset the printer
FAULT
Output
Low active pulse signal indicating an error in the printer
SELECTIN
Input
Signal for the IEEE1284 standard