System Overview
3.2.3 Asic(SPGPm) Specification
3.2.3.1 Introduction
Jupiter4E is
1.One Chip Laser Beam Printer Controller
-GDI only
-AMBA AHB used for high speed bus transactions between masters and slaves
-AMBA APB used for low speed bus transactions between ARM core and peripherals
-3 PLLs ( 2 Dithered PLL and 1 General PLL)
first for CPU(150MHz), AHB(75MHz), APB(75MHz),
second for USB(48MHz)
third for PVC(59MHz)
-75MHz system operation
-1.8V power operation
-3.3V tolerant input and
-SDRAM and IO Address / Data signals multiplexing
2.Integrated ARM940T 32-bit RISC embedded processor core
-150MHz core frequency operation
-Harvard Architecture Cache : 4KByte Instruction cache, 4KByte Data cache
-Single memory bus architecture
3.Built in Flash Memory
-4MBits (128Kx32bits)
-Serial programming mode using flash programmer tool
-Internally flash memory read / write operation support
-Programmable access timing control
4.32MB Special function Register Area
5.Directly connected to 3 external IO banks (IOC)
-32 MB size in each IO bank
-Programmable setup, access, hold timing
-Programmable recovery time for slow devices
-Allows to access peripheral devices such as GPIO control logic
6.Directly connected to 1 external ROM bank (ROMC)
-32 MB size for one ROM bank
-One external flash memory attachable.
7.Directly connected to two SDRAM banks (SDRAMC)
-Extensible architecture
-Two external SDRAM attachable.
-SDRAM controller supports
-Up to 32MB per bank.
-Support for SDRAM configurations including programmable column address
-Programmable refresh interval
Service Manual | ||
Samsung Electronics | ||
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