Epson LQ-2550 Technical Manual page 266

Pin
Terminal
No.
ADO
8
AD 1
9
10
11
TM 1
21
2 0 TM2
18 RCK
19 SCK
4 o
5 o
1 o
17 o
7 AO 1 0
601 0
6
C o l o
3
2 DO 1 0
A02
13 o
602
14 0
C02 o
15
16 D02
o
22 RST
Cs
23
2 4
Vss
12 —
Table A-10. E05A09BA Terminal Functions
Description (4B)
Address bus O
Address bus 1
I Address bus 2
I Address bus 3
I CR motor synchronous pulse
PF motor synchronous pulse
I Read pulse
I Write pulse
CR motor reference voltage
#O OFF/~ (Hold)
CR motor reference voltage
# 1 OFF/ON (Speed 4)
CR motor reference voltage
#2 OFF/~ (Speed 2, 3)
CR motor coil A
CR motor coil B
CR
motor coil C
coil D
CR motor
coil A
PF motor
PF motor coil B
PF motor coil C
PF D
motor coil
I Reset signal
I
Chip select
+ 5 VDC
Ground
Pulled up
Pulled up
Pulled up
PG motor HOLD/DRIVE
Pulled up
CS motor HOLD/DRIVE
PG motor coil A
PG motor coil B
PG motor coil C
PG motor coil D
CS motor coil A
CS motor coil B
CS motor coil C
CS motor coil D
A-2 1
Description (3B)