9
3) Interface Connector and function
No
SIGNAL
DIR.
FUNCTION
1
/STROBE
IN
l
STROBE Pulse is occurred on reading data.
l
HIGH on normal , LOW on reading data
2
DATA0
IN
l
Parallel data bits
l
“1”on HIGH, “0”on LOW.
3
DATA1
IN
4
DATA2
IN
5
DATA3
IN
6
DATA4
IN
7
DATA5
IN
8
DATA6
IN
9
DATA7
IN
10
ACK
OUT
l
Ready signal to receive data.
l
HIGH on normal , LOW on operatong.
11
BUSY
OUT
l
Indicate Whether printer could receive data
or not.
l
Can not receive on HIGH, can do it on LOW
12
PE
OUT
l
Paper is or not
l
No paper on HIGH, set it on LOW.
13
SLCT
OUT
l
Whether printer is ON-LINE or not . (NC)
14
/AUTO FD
IN
l
1Line space is advanced on auto-feed. (NC)
15
/ERROR
OUT
l
Checking printer “ ERROR”
16
/INIT
IN
l
Hardware Reset in printer.(NC)
17
SLCT IN
IN
l
Select printer on LOW. (NC)
18~25
GND
-
Signal Ground
10
4) Signal Timing Chart
;
;
;
;
5
µ
s 5
µ
s
BUSY
/ACK
DATA
/STB
0.5
µ
s(min) 0.5
µ
s(min)
