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AMD Geode™ CS5530A Companion Device Data Book

AMD Geode™ CS5530A Companion Device

Revision 1.1

1.0AMD Geode™ CS5530A

Companion Device

1.1

General Description

The AMD Geode™ CS5530A companion device is

designed to work in conjunction with an AMD Geode™

GX1 processor. Together, the Geode GX1 processor and

CS5530A companion device provide a system-level solu-

tion well suited for the high performance needs of a host of

devices which include digital set-top boxes and thin client

devices. Due to the low power consumption of the GX1

processor, this solution satisfies the needs of battery pow-

ered devices such as AMD’s WebPAD system, and thermal

design is eased allowing for fanless system design.

The CS5530A is a PCI-to-ISA bridge (South Bridge), ACPI-

compliant chipset that provides AT/ISA style functionality.

The device contains state-of-the-art power management

that enables systems, especially battery powered systems,

to significantly reduce power consumption.

Audio is supported through PCI bus master engines that

connect to an AC97 compatible codec. If industry standard

audio is required, a combination of hardware and software

called Virtual System Architecture™ (VSA) technology is

provided.

The Geode GX1 processor’s graphics/video output is con-

nected to the CS5530A. The CS5530A graphics/video sup-

port includes a PLL that generates the DOT clock for the

GX1 processor (where the graphics controller is located),

video acceleration hardware, gamma RAM plus three

DACs for RGB output to CRT, and digital RGB that can be

directly connected to TFT panels or NTSC/PAL encoders.

Figure 1-1. Block Diagram

X-Bus

ISA Bus

PCI Bus

USB

PCI to X-Bus / X-Bus to PCI Bridge

PCI to USB Macro

Active Decode

Address Mapper

Audio/Codec/MPU

Interface

Pwr Mgmt, Traps,

Events, and Timers

IDE

Interface

Display Interface

MPEG, DOT Clock

CSC and SCL

RGB/FP Interface

AT Compatibility Logic

ISA Bus Interface

AT Ports, ISA Megacells

TFT/CRT

PCI Configuration

Registers

Graphics

and Video

from CPU

X-Bus Arbiter

CS5530A Support

GPIOs

IDE

AC97 Codec

Ultra DMA/33

Joystick / Game Port

Joystick

GPCS

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