Samsung ML-1665 Service Manual page 28

(a) Asic(Jupiter4e)
• CPU Core : Use 32Bit RISC Processor of Jupiter4e, and control system by operating Operation Block of
the System Program inside Flash Memory.
- Main Function Block:
▶ Completely Integrated System for Embedded Applications,
▶ 32 Bit Risc Architecture, Efficient and Powerful ARM9 CPU
▶ LSU Interface Module for Interfacing PVC with LSU
▶ 2 Channel General Purpose DMA Controller for High Speed I/O
▶ Dual Memory Bus Architecture
- Operation Frequency : 150MHz
- Operation Voltage : 3.3V
- POWER ON RESET TIME : 6.6ms below
(b) Memory
1) Flash Memory
Store System Program and can be download System Program through PC Interface
- Capacity : 0.5M Byte
- Access Time : 70 nsec
2) SDRAM
When Printing, use Band Buffer, System Working Memory Area .
- 8M capa : 8M Byte basic.
8M :Printing System Working Memory Area
- Access Time : 60 nsec
Service Manual
Product spec and feature
2-18
Samsung Electronics