Epson LQ-2550 Technical Manual page 145

2.3.8.1 E05A09BA Gate Array (MCU: 3B)
The E05A09BA gate array has the same functions as the MCU (4B) described in Section 2.3.7.1. This
assignments for the MCU (3 B).
See A. 1.1.9 in Appendix for details of the MCU.
H H x
L L
H
L — —
------
N U I tS: 1 . X : Not CIWlrl(?U.
2. When the power is first applied or when INIT goes LOW, RST goes LOW.
ADO S297 m
x x x
L L L L
H
H L
H
H L L
H
H L
H
H L L L
H
H L
H
H L L
H
H L
H
L L L
L
H
H L
H
— — — —
Function
No change
PG motor
H
rotation
L
direction
PG motor
H
phase
L
switching
CS motor
H
rotation
L
direction
CS motor
H
phase
L
switching
H OUT = H
selection
L
H OUT = H
selection
L
H OUT = H
selection
L
H OUT = H
selection
L
H
AO1 to DO1
output logic
L Negative logic
H Same as the RST
signal input
L
Not used
— Resets the internal circuit
reset and disables the
output
2-99
Remark
Narrow to wide
Platen gap
Wide to narrow
2-2
1-2 Not used
Ribbon
2-2
1-2 Not used
Pull-up (Not used)
OUT = L
PG motor
hold
OUT = L PG motor drive
Pull-up (Not used)
OUT = L
motor hold
CS
OUT = L CS motor drive
Positive NPN
logic
PNP (Not used)