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Technical Manual
7. HARDWARE DESCRIPTION
7.1. GEODE SC1200 Processor
The ePanel-mgx Board operates with the National Semiconductor® Geode™ SC1200 processor (with inte-
grated North Bridge and I/O Companion Multi-Function South Bridge ):
GEODE SC1200 Processor:
• Supports Intel's MMX instruction set extension for the acceleration of multimedia applications
• 16 kByte unified L1 cache
• PCI Host Controller
• 2D Graphics Accelerator and Display controller
• SDRAM interface tightly coupled to CPU core and graphics subsystem for maximum efficiency
• Provides 16-bit XpressAUDIO subsystem:
Integrated South Bridge :
• 3.3V or 5.0V PCI bus compatible
• 5.0V tolerant I/O interfaces
• PCI 2.1 compliant
• Supports PCI initiator-to-ISA and ISA master-to-PCI cycle translations
• PCI master for audio I/O and IDE controllers
• PCI-to-ISA interrupt mapper/translator distributed DMA supported
• Two 8259A-equivalent interrupt controllers
• 8254-equivalent timer
• Two 8237-equivalent DMA controllers
• Boot ROM and keyboard chip select
• Two controllers with support for up to four IDE devices
• Independent timing for master and slave devices for both channels
• PCI bus master burst reads and writes
• AC97 codec interface (Specification Revision 1.3, 2.0, and 2.1 compliant interface)
• Three independent USB interfaces
– Open Host Controller Interface (OpenHCI) specification compliant
– Second generation proven core design
7.1.1. Memory configuration
The ePanel-mgx uses only Small Outline Dual Inline Memory Modules (SO-DIMMs). One socket is available for
3.3V (power level) unbuffered Synchronous Dynamic Random Access Memory (SDRAM) of either 64, 128 or
256 MByte. Specification of the SDRAM module refers to PC-133 standard.
ePanel-mgx
Page 32 of 45 Pages
Hardware description
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