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1.5 ATI Radeon* Xpress 200 Chipset
The ATI Radeon Xpress 200 chipset consists of the following devices:
•
ATI Radeon Xpress 200 Northbridge
•
IXP 450 Southbridge
The ATI Radeon Xpress 200 Northbridge is a centralized controller for the system bus, the memory
bus, and the PCI Express bus. The ATI Radeon Xpress 200 Northbridge also provides integrated
graphics capabilities supporting 3D, 2D and display capabilities. The IXP 450 is a centralized
controller for the board's I/O paths. The FWH provides the nonvolatile storage of the BIOS.
For information about
The ATI Radeon Xpress 200 Northbridge
The IXP 450 Southbridge
Resources used by the chipset
1.5.1 Graphics Subsystem
The board contains two separate, mutually exclusive graphics options. Either the integrated
graphics processor (based on the ATI Radeon X300 core contained within the ATI Radeon
Xpress 200 Northbridge) is used, or a PCI Express x16 add-in card can be used.
1.5.2 Firmware Hub (FWH)
The Firmware Hub provides the nonvolatile storage of the Intel BIOS.
1.5.3 USB
The board supports up to eight USB 2.0 ports, supports UHCI and EHCI, and uses UHCI- and
EHCI-compatible drivers.
The IXP 450 Southbridge provides the USB controller for all ports. The port arrangement is as
follows:
•
Four ports are implemented with dual stacked back panel connectors adjacent to the audio
connectors
•
Four ports are routed to two separate front panel USB connectors
NOTE
Computer systems that have an unshielded cable attached to a USB port may not meet FCC
Class B requirements, even if no device is attached to the cable. Use shielded cable that meets the
requirements for full-speed devices.
For information about
The location of the USB connectors on the back panel
The location of the front panel USB connectors
Product Description
Refer to
http://www.ati.com/
http://www.ati.com/
Chapter 2
Refer to
Figure 6, page 43
Figure 7, page 44
17
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