User manual VIA KM266 WHITE PAPER

[. . . ] V-MAP: Based on the unique VIA Modular Architecture Platform (V-MAP), the VIA ProSavageDDR KM266 provides OEMs and SIs with unparalleled flexibility and scalability for existing and future PC designs. A choice of three South Bridge options with differing combinations of integrated communication and networking support enable a variety of different configurations and therefore price points. [. . . ] Virtual Channel Memory and Error Correcting Code (ECC) memory are also supported, as is PC100 and PC133 SDRAM. With such flexible memory support, the VIA ProSavageDDR KM266 gives OEMs and SIs maximum scalability to allow the construction of a full spectrum of high-performance and low-cost systems from mainstream consumer and commercial desktops to high-end workstations. VIA ProSavageDDR KM266 South Bridge The VIA ProSavageDDR KM266 is capable of interfacing to any VIA V -Link South Bridge, including the VT8233, VT8233C and VT8233A, as well as future South Bridge designs. The VT8233 and VT8233C are highly integrated network-ready South Bridges that feature two high-speed ATA-100 IDE controllers (4 IDE devices total), six USB ports, 6 PCI slots, Low Pin Count (LPC) interface, and an I/O Advanced Programmable Interrupt Controller (APIC). Advanced Configuration and Power Interface (ACPI) and Advanced Power Management (APM) are also integrated into all VT8233 family products. The VT8233C adds an integrated 3Com® Ethernet MAC controller, providing high quality and ultra reliable 10/100 Mbps network support. All VIA V-Link South Bridges feature high quality, 6 channel AC/97 2. 2 sound support, as well as an MC/97 software modem interface. These features, along with 10/100 Ethernet and HomePNA support, can be harnessed through the use of an ACR (advanced communication riser) slot, or can be integrated directly onto the system board. The enhanced IDE controllers on the VT8233 and VT8233C support all Ultra-DMA 33/66/100 devices including as CD-ROMS, DVD-ROMs, and hard disk drives. ATA100 is the fastest IDE standard currently available on the market, and allows each separate IDE controller on the VT8233 and VT8233C to burst up to 100MB/s, for a total of 200MB/s of bandwidth. Each controller also supports up to two devices, for a total of four ATA-100 capable drives. The three USB hubs offering a combined 36 Mbps of bandwidth on the VT8233 family provide additional flexibility by allowing the user to add up to six USB devices to the system, such as keyboards, mice, drives, digital cameras, scanners, speakers, modems, joysticks, and MP3 players. VT8233A The VT8233A is the first South Bridge Chip to support Ultra ATA-133, the new IDE interface that offers 33% more bandwidth for data transfer between storage devices and CPU. The enhanced IDE controller supports all Ultra-DMA 33/66/100/133 devices Page 5 VIA ProSavageDDR KM266 Chipset White Paper including HDDs, CD-ROMS and DVD-ROMs as well as new generation BigDriveTM HDDs that break the existing 137GB limit on hard drive capacity and enable an exponential increase in data storage capacity for personal computing devices. [. . . ] Also, due to its evolutionary, parallel technology, the latency of DDR is quite low compared to competing serial memory technologies. All grades of DDR SDRAM operate at 2. 5 volts, as opposed to 3. 3V for PC100 and PC133. [. . . ]