System card is composed with above figure structure and main functions are as the followings.
Main Functions of SOC (DC1250)
It controls entire program flow by reading execution codes from flash memory (serial and NAND
flash).
It controls image handling part that handles images by reading the document.
DD2 memory controller is built in to support maximum of 128M capacity and DD2-400 speed.
It controls various motors.
A programmable timer for CIS Scanner I/F control is built-in.
Pixel output control logic is configured for LSU Control.
It performs UART communication with Control Panel to accept user input and express status.
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