Summary of Product
Service Manual
4-13
Samsung Electronics
4.3 Main Board
Main controller part is organized with Asic (SPGPi) part, Memory part, and Engine interface part, and it is functions as a
Bus control, I/O handling, Drivers, and PC interface by CPU.
Memory access has program memory (supports 32bit operation) and working memory (supports 32bit operation).
SPGPv3
- It is a main CPU and an Asic of ARM1020 core which has a CPU core CLK with
over 300MHz and a System bus with 100MHz.
It uses 3.3V for operation voltage and I/O,It uses 80MHz for system bus CLK.
SDRAM
- Main memory.SDCLK is 80MHz.
NAND Flash ROM
- Program Memory
ISP1582 USB-IC
- It uses USB2.0 peripheral controller and 12MHz USB Clock.
A3977
- It is an exit motor driver IC and controls the motion of exit motor.
Regulator
- It supplies the core voltage to CPU by converting 3.3V to 1.3V.
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