Samsung SCX-4200 Series - Page 26

Samsung Electronics
Service Manual
System Overview
3-10
3) SDRAM : is used as Page Buffer in Printing, Scan Buffer in Scanning and System Working Memory Area
- Size: 8Mbyte
- 3.5 MB: System Working Memory Area and Scan Buffer
- 4.5 MB: Printing System Working Memory Area
- Max Frequency: 133MHz
CPU
(
ARM7TDMI)
DMA Controller
(IP_DMAC)
DATA-BUS
Scanner
Analog Signal
Sensor
Control
Signal
MEMORY
CONTROLLER
IP_TOP
DATA-BUS
ADDR-BUS
ADDR-BUS
IP_TOP interface
IP_MAIN
IP_SFR
Motor
Motro
Control
Signal