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AM-300DE
5 – 6
2.1.4 Scanner I/F block
1) CIS I/F block
1) CIS I/F block
The CIS is controlled through buffer (IC14) by Main CPU (IC1), and
the output video signal from CIS is input into AFE block of Main CPU
(IC1). CIS LED is controlled through LED driving circuit (IC36,
Q29~Q34) by Main CPU (IC1).
the output video signal from CIS is input into AFE block of Main CPU
(IC1). CIS LED is controlled through LED driving circuit (IC36,
Q29~Q34) by Main CPU (IC1).
2) Scanner Motor control
MTD2007F (IC12): pin-28 HSOP (Scanner Motor Driver)
The scanner motor is driven by this Motor Driver which is the constant
current motor driver with bipolar, chopper system the rotation speed
and its timing of the scanner motor are controlled by Main CPU (IC1).
current motor driver with bipolar, chopper system the rotation speed
and its timing of the scanner motor are controlled by Main CPU (IC1).
2.1.5 Panel I/F block
The strobe signals for LCD control and key scanning of the operation
panel PWB unit are output from the GPIO port of the Main CPU (IC1).
The key switch sense signals from panel unit is connected to periph-
eral bus via buffer IC (IC14).
panel PWB unit are output from the GPIO port of the Main CPU (IC1).
The key switch sense signals from panel unit is connected to periph-
eral bus via buffer IC (IC14).
CIS
Main CPU
(IC1)
Image sensor
LED R/G/B
LED Driving
circuit
Buffer IC
(IC14)
Video signal
AFE
BLOCK
Fig. 2
Main CPU
(IC1)
Motor Driver
(IC12)IC12
(IC12)IC12
)
Scanner
Motor
Motor Driver
(IC12)
Fig. 3
Main CPU
(IC1)
Buffer IC
(IC14)
Operation
Panel
PWB
unit
LCD
Strobe Signal
Control Signal
Control Signal
Control
Signal
Key Sense
Signal
Peripheral
Bus
Fig. 4
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