H/W Structure Abd Descriptions - Samsung SCX-4200 Series Service Manual

3.2 H/W Structure and Descriptions
SCX-4200 is roughly made up Main Control part, Operation Panel part, Scanner part, PC interface part and
Power part. Each Part is separated Module which focus on common and standard design of different kind products.
The main control part is 1 CPU,1 board adopting Chorus 2 Chip which is exclusive MFP ASIC . Scanner part is
composed Platen and is connected with Main Cantroller by Harness.
3.2.1 CPU Part
1) CPU : Use 16/32Bit RISC Processor, Chorus 2,which is exclusive controller to execute Printer and to execute
operation block by flash memory within system program, and to control whole system.
- Main function block
- Completely Integrated System for Embedded Applications,
- 16/32 Bit Risc Architecture, Efficient and Powerful ARM7 Core.
- LSU Interface Module for Interfacing PVC with LSU
- 5 Channel General Purpose DMA Controllers for High Speed I/O
- Operation Frequency: System: 66MHz, Bus: 66MHz
- Operation Voltage : 3.3V
2) Flash Memory : Record System Program, and download System Program by PC INTERFACE..
- Size: 1M Byte
- Access time: 70 nsec
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