CS5530A datasheet(13/259 Pages) AMD

13 / 259 page

AMD Geode™ CS5530A Companion Device Data Book

Architecture Overview

Revision 1.1

2.0Architecture Overview

The Geode CS5530A can be described as providing the

functional blocks as shown in Figure 1-1 on page 11.

• Processor support

• PCI bus master/slave interface

• ISA bus interface

• AT compatibility logic

• IDE controllers

• Power management:

— GPIO interfaces

— Traps, Events, Timers

• Joystick/Game port interface

• Virtual audio support hardware

• Video display, which includes MPEG accelerator,

RAMDAC, and video ports

• USB controller

2.1

Processor Support

The traditional south bridge functionality included in the

CS5530A companion device has been designed to support

the GX1processor. When combined with a GX1 processor,

the CS5530A provides a bridge which supports a standard

ISA bus and system ROM. As part of the video subsystem,

the CS5530A provides MPEG video acceleration and a

digital RGB interface, to allow direct connection to TFT

LCD panels. This chip also integrates a gamma RAM and

three DACs, allowing for direct connection of a CRT moni-

tor. Figure 2-1 shows a typical system block diagram.

For detailed information regarding processor signal con-

nections refer to Section 4.1 "Processor Interface" on page

48.

Figure 2-1. Example System Block Diagram

YUV Port

(Video)

RGB Port

PCI Interface

Memory

Memory Data Bus

PCI Bus

AMD Geode™

CS5530A

Graphics Data

Video Data

Analog RGB

Digital RGB

CRT

TFT

Flat Panel

USB

(2 Ports)

AC97

Codec

Speakers

ROM

Audio

Micro-

phone

GPIOs

Port

(Graphics)

AMD Geode™

IDE Devices

SuperI/O

BIOS

ISA Bus

Ultra DMA/33 IDE Bus

Memory

Serial

Packet

DC-DC

Battery

Clocks

or TV

NTSC/PAL

Encoder

GX1

Processor

Companion

Device

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