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National Semiconductor Electronic Components Datasheet

CS5530 Datasheet

Geode CS5530 I/O Companion Multi-Function South Bridge

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April 2000
Geode™ CS5530 I/O Companion
Multi-Function South Bridge
General Description
The CS5530 I/O companion is designed to work in con- Audio is supported through PCI bus master engines which
junction with the GXLV and GXm series processors; all
members of the National Semiconductor® Geode™ family
connect to an AC97 compatible codec such as the
National Semiconductor LM4548. If industry standard
of products. Together the Geode processor and CS5530
provide a system-level solution well suited for the high
audio is required, a combination of hardware and software
called Virtual System Architecture® (VSA™) technology is
performance needs of a host of devices such as digital provided.
set-top boxes and thin client devices. Due to the low
power consumption of a GXLV processor, this solution
satisfies the needs of battery powered devices such as
National’s WebPAD™ system, a Geode GXLV proces-
sor/CS5530 based design. Also, thermal design is eased
allowing for fanless system design.
The GXLV processor’s graphics/video output is connected
to the CS5530. The CS5530 graphics/video support
includes a PLL that generates the DOT clock for the GXLV
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
The CS5530 I/O companion is a PCI-to-ISA bridge (South connected to TFT panels or NTSC/PAL encoders. The
Bridge), ACPI-compliant chipset that provides AT/ISA digital RGB output can also be connected to the National
style functionality. To those familiar with PC architecture Semiconductor CS9210 Graphics Companion (a DSTN
this enables a quicker understanding of the CS5530’s Controller) for DSTN panel support. The CS9210 is also a
architecture. The device contains state-of-the-art power member of the Geode product family.
management that enables systems, especially battery
powered systems, to significantly reduce power consump-
tion. DataSheet4U.com
Geode™ CS5530 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
CS5530 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™ CS9210
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
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.
Audio/Codec/MPU
Interface
AC97 Codec
(e.g., LM4548)
© 2000 National Semiconductor Corporation
DataSheet4 U .com
www.national.com


National Semiconductor Electronic Components Datasheet

CS5530 Datasheet

Geode CS5530 I/O Companion Multi-Function South Bridge

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www.DataSheet4U.com
et4U.com
Two bus mastering IDE controllers are included for sup-
port of up to four ATA-compliant devices. A two-port Uni-
versal Serial Bus (USB) provides high speed, Plug & Play
expansion for a variety of consumer peripheral devices
such as a keyboard, mouse, printer, and digital cameras.
If additional functions are required, such as real-time
clock, floppy disk, PS2 keyboard, and PS2 mouse, a
SuperI/O (e.g., National PC97317) can be easily con-
nected to the CS5530.
Power Management
 Intelligent system controller supports multiple power
management standards:
— Full ACPI and Legacy (APM) support
— Directly manages all GXLV and GXm processor
power states (including automatic Suspend modula-
tion 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 the GXLV and GXm Geode
series processors
 352-Terminal Tape Ball Grid Array (TBGA) 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 I/O interfaces
 AC97 codec interface:
 3.3V core
— Specification Revision 1.3, 2.0, and 2.1 compliant
interface. Note that the codec (e.g., LM4548) must
PCI-to-ISA Bridge
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 GXLV and GXm processor’s
cycle translations
graphics and video capabilities:
 PCI master for audio I/O and IDE controllers
 Subtractive agent for unclaimed transactions
 PCI-to-ISA interrupt mapper/translator
— Three independent line buffers for accelerating
video data streams
— Handles asynchronous video and graphics data
DataSheet4U.costmreams concurrently from the processor
— YUV to RGB conversion hardware
— Arbitrary X & Y interpolative scaling
AT Compatibility
— 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
— Integrated DOT clock generator
Bus Mastering IDE Controllers
 Two controllers with support for up to four IDE devices
— Digital RGB interface drives TFT panels or standard
NTSC/PAL encoders
 Independent timing for master and slave devices for
both channels
 PCI bus master burst reads and writes
 Ultra DMA/33 (ATA-4) support
 Multiword DMA support
Universal Serial Bus
 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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DataSheet4 U .com
2
Revision 4.1


Part Number CS5530
Description Geode CS5530 I/O Companion Multi-Function South Bridge
Maker National Semiconductor
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CS5530 Datasheet PDF






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