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AMD Geode™ LX Processors Data Book 11
1
Overview 33234H
1.0Overview
1.1 General Description
AMD Geode™ LX processors are integrated x86 proces-
sors specifically designed to power embedded devices for
entertainment, education, and business. Serving the needs
of consumers and business professionals alike, it’s an
excellent solution for embedded applications, such as thin
clients, interactive set-top boxes, single board computers,
and mobile computing devices.
Available with a core voltage of 1.2V, 1.25V, or 1.4V it offers
extremely low typical power consumption leading to longer
battery life and enabling small form-factor, fanless designs.
While the processor core provides maximum compatibility
with the vast amount of Internet content available, the intel-
ligent integration of several other functions, including
graphics and video datapaths, offers a true system-level
multimedia solution.
For implementation details and suggestions for this device,
see the supporting documentation (i.e., application notes,
schematics, etc.) on the AMD Embedded Developer Sup-
port Web site (http://wwwd.amd.com/dev
, NDA required).
Figure 1-1. Internal Block Diagram
GeodeLink™ Interface Unit 0
GeodeLink™ Interface Unit 1
GeodeLink™
Control
Diagnostic
Test
Power Mgmnt
GeodeLink™
SDCLKs
TLB
Integer
Unit
MMU
Load/Store
FPU
64 KB L1 D-cache
64 KB L1 I-cache
Bus Controller
CPU Core
Alpha Compositing
ROP Unit
BLT Engine
Graphics Processor (GP)
Timing
Palette RAM
Compression Buffer
Display Controller (DC)
Alpha Blender
Video Mixer
Video Scalar
Video Processor (VP)
RGB YUV
Graphics Filter/Scaling
(GLIU0)
(GLIU1)
Memory
Clock Module
CPU PLL
System PLL
TFT/VOP
3x8-Bit DAC
CRT
GeodeLink™
PCI
Video Input
SYSREF
DOTREF
Test/Reset
Interface
Processor (GLCP)
PCI Bridge
(GLPCI)
Controller (GLMC)
Port (VIP)
DOTCLK PLL
128 KB L2 cache
1 KB
LUT
Rotation BLT
Companion I/F
VIP
HW VGA
128-bit AES
TFT
Controller/
Video
Output
Port (VOP)
AMD Geode™
Companion
Device
64-Bit
DDR
Security Block
Random Number
Generator
EEPROM on package
64-bit DDR SDRAM
(CBC/ECB)
Tr ue
(optional)