Epson 610 manual Control Circuit, Major ICs, Location Functions

EPSON Perfection 610 Rev. B

2.1.4 Control Circuit

The CPU (IC11) of this scanner is a one-tip 16-bit bus CPU operating at 20MHz. ASIC (IC7) manages input signal correction, image processing, and controlling the CCD sensor board and USB interface. Table 2-3shows the major IC functions.

Table 2-3. Major ICs

IC	Location		Functions
		CPU
M37920	IC11	24-bit Address Bus
		16-bit Data Bus
SDM4260CLU-6S	IC3	DRAM 256k x 16bit
BA033FP-E2	IC9	Regulator IC (3.3 VDC)
NJM78M05DLA-TE1	IC12	Regulator IC (5 VDC)
		ASIC: Manages the following:
		• Input image signal correction
		•	CCD control
E02A32SA	IC7	•	USB interface control
		•	Image processing
		•	Memory control
		•	Data in/output control
A3957SLBTR	IC1, 2	CR motor driver IC
M51953A	IC8	Reset IC
AD9816JS	IC24	12-bit A/D converter
M27C1001-10F1	IC5	Program ROM (128k x 8bit)
SG-8002PHC	CR1	48MHz clock for E02A32SA
CSTCS20.00	CR2	20MHz clock for CPU.
EE-SX1041	PC1	CR home position sensor

			R e g u l aRt eo gr u(lIaCt9o )r ( I
			3 . 3 V D C			5 V D C
			D R A M		C L K
					( C R 1 )
			( I C 3 )
	I m a g e		D a t a
C C D	( R / G / B )
	B o a r d					U S B
		A M P .
				E 0 2 A 3 2 ( I C 7 )
			A d d r e s s			B u s
L a m p				D a t a B u s
&
I n v e r t e r B o a r d
	C R	C R	M o t o r			P R O M
	M o t o D r i v e r C P U ( I C 1 1 )
		( I C 1 ,		2 )		( I C 5 )
			H . P .	S e nRseosre t I C
			( P C 1C)L K		( I C 8 )
				(C R) 2

Figure 2-6. Control Circuit Diagram

Operating Principles Engine Mechanism 20