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National Semiconductor Electronic Components Datasheet

CS5530A Datasheet

Geode CS5530A I/O Companion Multi-Function South Bridge

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May 2001
Revision 1.1
Geode™ CS5530A I/O Companion
Multi-Function South Bridge
General Description
The CS5530A I/O companion is designed to work in con-
junction with a GX-series processor (i.e., GX1, GXLV,
GXm); all members of the National Semiconductor®
Geode™ family of products. Together, the Geode proces-
sor and CS5530A provide a system-level solution 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 GX-series pro-
cessors, this solution satisfies the needs of battery pow-
ered devices such as National’s WebPAD™ system, and
thermal design is eased allowing for fanless system
design.
The CS5530A I/O companion 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 consump-
tion.
Audio is supported through PCI bus master engines which
connect to an AC97 compatible codec such as the National
Semiconductor LM4548. If industry standard audio is
required, a combination of hardware and software called
Virtual System Architecture® (VSA™) technology is pro-
vided.
The Geode GX-series processors’ graphics/video output is
connected to the CS5530A. The CS5530A graphics/video
support includes a PLL that generates the DOT clock for
the GX-series processors (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. The digital RGB output can also be connected to
the National Semiconductor Geode CS9211 graphics com-
panion (a flat panel display controller) for DSTN panel sup-
port.
DataSheet4U.com
Geode™ CS5530A Internal Block Diagram
PCI Bus
DataShee
USB
GPIOs
GPCS
PCI to USB Macro
Pwr Mgmt, Traps,
Events, and Timers
PCI to X-Bus / X-Bus to PCI Bridge
X-Bus
CS5530A Support
PCI Configuration
Registers
Active Decode
Address Mapper
X-Bus Arbiter
Graphics
and Video
from CPU
Display
Display Interface
MPEG, DOT Clock
CSC and SCL
RGB/FP Interface
Geode™ CS9211
Graphics Companion
AT Compatibility Logic
ISA Bus Interface
AT Ports, ISA Megacells
Ultra DMA/33
IDE
Interface
Joystick
Joystick / Game Port
ISA Bus
PC97317 SIO
IDE
Audio/Codec/MPU
Interface
AC97 Codec
(e.g., LM4548)
DataSheet4U.comNational Semiconductor and Virtual System Architecture are registered trademarks of National Semiconductor Corporation.
Geode, VSA and WebPAD are trademarks of National Semiconductor Corporation.
For a complete listing of National Semiconductor trademarks, please visit www.national.com/trademarks.
© 2001 National Semiconductor Corporation
DataSheet4 U .com
www.national.com


National Semiconductor Electronic Components Datasheet

CS5530A Datasheet

Geode CS5530A I/O Companion Multi-Function South Bridge

No Preview Available !

www.DataSheet4U.com
et4U.com
Two bus mastering IDE controllers are included for support
of up to four ATA-compliant devices. A two-port Universal
Serial Bus (USB) provides high speed, Plug & Play expan-
sion for a variety of consumer peripheral devices such as a
keyboard, mouse, printer, and digital camera. If additional
functions are required like real-time clock, floppy disk, PS2
keyboard, and PS2 mouse, a SuperI/O such as the
National PC97317 can be easily connected to the
CS5530A.
Power Management
 Intelligent system controller supports multiple power
management standards:
— Full ACPI and Legacy (APM) support
— Directly manages all GX-series processors’ power
states (including automatic Suspend modulation for
optimal performance/thermal balancing)
 I/O traps and idle timers for peripheral power
management
Features
 Up to eight GPIOs for system control:
— All eight are configurable as external wakeup events
General Features
 Designed for use with National’s Geode GX-series
processors
 352 PBGA (Plastic Ball Grid Array) package
 3.3V or 5.0V PCI bus compatible
 Dedicated inputs for keyboard and mouse wakeup
events
XpressAUDIO
 Provides "back-end" hardware support via six buffered
PCI bus masters
 5.0V tolerant on all inputs
 3.3V core
PCI-to-ISA Bridge
 AC97 codec interface:
— Specification Revision 1.3, 2.0, and 2.1 compliant
interface. Note that the codec (e.g., LM4548) must
have SRC (sample rate conversion) support
 PCI 2.1 compliant
Display Subsystem Extensions
 Supports PCI initiator-to-ISA and ISA master-to-PCI
 Complements the GX-series processors’ graphics and
cycle translations
video capabilities:
 PCI master for audio I/O and IDE controllers
— Three independent line buffers for accelerating video
data streams
 Subtractive agent for unclaimed transactions
 PCI-to-ISA interrupt mapper/translator
— Handles asynchronous video and graphics data
DataSheet4U.cosmtreams concurrently from the processor
— YUV to RGB conversion hardware
AT Compatibility
— Arbitrary X & Y interpolative scaling
— Color keying for graphics/video overlay
 Two 8259A-equivalent interrupt controllers
 VDACs / Display interface:
 8254-equivalent timer
 Two 8237-equivalent DMA controllers
— Three integrated DACs
— Gamma RAM:
– Provides gamma correction for graphics data
 Boot ROM and keyboard chip select
 Extended ROM to 16 MB
streams
– Provides brightness/contrast correction for video
data streams
Bus Mastering IDE Controllers
— Integrated DOT clock generator
— Digital RGB interface drives TFT panels or standard
 Two controllers with support for up to four IDE devices
 Independent timing for master and slave devices for
NTSC/PAL encoders
— Up to 1280x1024 @ 85 Hz
both channels
Universal Serial Bus
 PCI bus master burst reads and writes
 Ultra DMA/33 (ATA-4) support
 Multiword DMA support
 Two independent USB interfaces:
— Open Host Controller Interface (OpenHCI)
specification compliant
— Second generation proven core design
 Programmed I/O (PIO) Modes 0-4 support
DataShee
DataSheet4U.com
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2
Revision 1.1


Part Number CS5530A
Description Geode CS5530A I/O Companion Multi-Function South Bridge
Maker National Semiconductor
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CS5530A Datasheet PDF






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