Toshiba e-STUDIO 206 - Scanner Operation and Drive Circuit

e-STUDIO166/206 © February 2007 TOSHIBA TEC CORPORATION All rights reserved
SCANNER
6 - 6
6.4.2 Scan motor drive circuit
The scan motor (M1) is a 2-phase stepping motor and is driven by the motor driver (IC2).
Fig. 6-3
M
VDD
SG
VSS
MODE2
RESETB
MODE1
CWB
ENABLE
CLOCK
VREF
Excitation mode setting-2 (Fixed at "H")
SCANRST: Resetting
SCNMD0: Excitation mode Setting-1
SCNDIR: Motor rotation direction setting
SCNEN: Cutting off of the drive output
SCNCLK: Clock input
SCNMVR:
Voltage to set value for the motor current
PG1
PG2
Driver IC
IC2
B
B
A
A
B
B
A
A
+24V+5V
GND
GND
GND
+5V
IC53
SoC
IC23
ASIC
MAIN board