Geode™ SC2200
Thin Client On a Chip
General Description
The Geode™ SC2200 Thin Client On a Chip device is a
member of the National Semiconductor® IA (Information
Appliance) On a Chip family of fully integrated x86 system
chips. The Geode SC2200 includes:
• The Geode GX1 processor module combines advanced
CPU performance with Intel MMX support, fully accelerated 2D graphics, a 64-bit synchronous DRAM
(SDRAM) interface, a PCI bus controller, and a display
controller.
• A low-power CRT and TFT Video Processor module with
a Video Input Port (VIP), and a hardware video accelerator for scaling, filtering, and color space conversion.
• The Core Logic module includes: PC/AT functionality, a
USB interface, an IDE interface, a PCI bus interface, an
LPC bus interface, Advanced Configuration Power Interface (ACPI) version 1.0 compliant power management,
and an audio codec interface.
• The SuperI/O module has: three Serial Ports (UART1,
UART2, and UART3 with fast infrared), a Parallel Port,
two ACCESS.bus (ACB) interfaces, and a Real-Time
Clock (RTC).
The block diagram shows the relationships between the
modules.
These features, combined with the device’s small form factor and low power consumption, make it ideal as the core
for a thin client application.
Block Diagram
GX1
Video Processor
Memory Controller
2D Graphics
Accelerator
CPU
Core
CRT I/F
Display
Controller
Video
Mixer
Video
Scaling
TFT I/F
Config.
Block
PCI Bus
Controller
Video Input Port (VIP)
Host Interface
Fast-PCI Bus
Clock & Reset Logic
Fast X-Bus
Core Logic
IDE I/F
RTC
ACB1
I/F
PCI/Sub-ISA
Bus I/F
PCI Bus
Bridge
USB
Parallel
Port
PIT
PIC
SuperI/O
DMAC
GPIO
UART1
Pwr Mgmnt
Audio Codec I/F
ACB2
I/F
Configuration
LPC I/F
ISA Bus I/F
UART2
ISA Bus
I/F
X-Bus
UART3
& IR
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Geode and VSA are trademarks of National Semiconductor Corporation.
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© 2003 National Semiconductor Corporation
www.national.com
Geode™ SC2200 Thin Client On a Chip
May 2003
Revision 4.1
