February 2007 Toshiba Tec Corporation All Rights Reserved E-Studio166/206 - Toshiba e-STUDIO166 Service Manual

Description of input signal
Clock input
Motor rotation direction setting
Cutting off of the drive output
Excitation mode Setting-1
Resetting
Voltage to set value for the
motor current
© February 2007 TOSHIBA TEC CORPORATION All rights reserved
SCNCLK Input The scan motor is rotated by inputting the pulses (CLK).
* Internal circuit of the motor driver works when the first
pulse of the input becomes ON.
* The maximum input clock is 9000 PPS.
SCNDIR Input The direction of the motor rotation is determined by setting
the level of the signal.
"H": Clockwise direction
"L": Counterclockwise direction
* The rotation direction within 7 µsec. before the first
pulse of the CLK comes should not be changed ON
and after the last pulse goes OFF.
SCNEN Input Forcibly turn ON/OFF the excitation drive.
"H": Normal operation (Excited)
"L": Excitation drive is forcibly shut off (Not excited)
SCNMD0 Input Sets the excitation mode.
* The setting should not be changed within 7µsec. after
the first pulse of the CLK comes ON.
SCANRST Input Resets the whole system.
"L" (10 µsec. or more): Internal circuit of the driver is ini-
tialized.
* The motor drive circuit is automatically reset when the
power is turned ON.
SCNNVR Input Sets the reference current value for the constant current
detection.
Motor wire current value can be set in the range of 0 to 2.0
(A)/phase by applying the analog voltage of 0 to 5 (V).
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