GXM Datasheet, PDF (2/244 Pages) National Semiconductor (TI) – Geode™ GXm Processor Integrated x86 Solution with MMX Support

Features
General Features

Packaged in:
— 352-Terminal Ball Grid Array (BGA) or
— 320-Pin Staggered Pin Grid Array (SPGA)

0.35-micron four layer metal CMOS process

Split rail design (3.3V I/O and 2.9V core)
32-Bit x86 Processor

Supports the MMX instruction set extension for the
acceleration of multimedia applications

Speeds offered up to 266 MHz

16 KB unified L1 cache

Integrated Floating Point Unit (FPU)

Re-entrant System Management Mode (SMM)
enhanced for VSA
PCI Controller

Fixed, rotating, hybrid, or ping-pong arbitration

Supports up to three PCI bus masters

Synchronous CPU and PCI bus clock frequency

Supports concurrency between PCI master and L1
cache
Power Management

Designed to support CS5530 power management
architecture

CPU only Suspend or full 3V Suspend supported:
— Clocks to CPU core stopped for CPU Suspend
— All on-chip clocks stopped for 3V Suspend
— Suspend refresh supported for 3V Suspend
Virtual Systems Architecture Technology

Architecture allows OS independent (software) virtual-
ization of hardware functions

Provides compatible high performance legacy VGA
core functionality
Note: GUI (Graphical User Interface) graphics accel-
eration is pure hardware.

Provides 16-bit XpressAUDIO subsystem
2D Graphics Accelerator

Graphics pipeline performance significantly increased
over previous generations by pipelining burst
reads/writes

Accelerates BitBLTs, line draw, text

Supports all 256 raster operations

Supports transparent BLTs

Runs at core clock frequency

Full VGA and VESA mode support

Special "Driver level” instructions utilize internal
scratchpad for enhanced performance
Display Controller

Video Generator (VG) improves memory efficiency for
display refresh with SDRAM

Supports a separate MPEG1 video buffer and data
path to enable video acceleration in the CS5530

Internal palette RAM for use with the CS5530

Direct interface to CS5530 for CRT and TFT flat panel
support which eliminates need for external RAMDAC

Hardware frame buffer compressor/decompressor

Hardware cursor

Supports up to 1280x1024x8 bpp and 1024x768x16
bpp
XpressRAM Subsystem

Memory control/interface directly from CPU

64-Bit wide memory bus

Support for:
— Two 168-pin unbuffered DIMMs
— Up to 16 open banks simultaneously
— Single or 16-byte reads (burst length of two)
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