GX1 Datasheet, PDF (1/247 Pages) National Semiconductor (TI) – Processor Series Low Power Integrated x86 Solution

April 2000
Geode™ GX1 Processor Series
Low Power Integrated x86 Solution
General Description
The National Semiconductor^® Geode™ GX1 processor
series is a line of integrated processors specifically
designed to power information appliances for entertain-
ment, education, and business. Serving the needs of con-
sumers and business professionals alike, it’s the perfect
solution for IA (information appliance) applications such as
thin clients, interactive set-top boxes, and personal internet
access devices.
The Geode GX1 processor series is divided into three main
categories as defined by the core operating voltage. Avail-
able with core voltages of 2.0V, 1.8V, and 1.6V, it offers
extremely low typical power consumption (1.2W, 1.0W, and
0.8W, respectively) leading to longer battery life and
enabling small form-factor, fanless designs. Typical power
consumption is defined as an average, measured running
Microsoft Windows at 80% Active Idle (Suspend-on-Halt)
with a display resolution of 800x600x8 bpp at 75 Hz.
Geode™ GX1 Processor Internal Block Diagram
SYSCLK
Clock Module
SYSCLK
multiplied
by “A”
Core
Clocks
X-Bus
Clocks
16 KB
Unified L1
Cache
(128)
C-Bus (64)
x86 Compatible Core
Integer
TLB
Unit
Instruction
Fetch
MMU
Load/Store
INT/NMI
Interrupt
Control
FP_Error
Floating Point
Unit
INTR
IRQ13
SMI#
SUSP#
SUSPA#
Power
Management
Control
Core Suspend
Core Acknowledge
X-Bus Suspend
X-Bus Acknowledge
X-Bus (32)
Arbiter
Write
Buffers
X-Bus
Controller
Read
Buffers
Arbiter
PCI Host
Controller
2D Accelerator
VGA
BLT Engine
ROP Unit
X-Bus CLK
divide by “B”
Display Controller
Compression Buffer
Palette RAM
Timing Generator
3
PCI
REQ/GNT Bus
Pairs
4
SDRAM
Clocks
64-bit
SDRAM
RGB
YUV
Geode™ Graphics
Companion Interface
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