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SiS SiS755 - Chipset Special - Design Wins
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SiS755 Chipset, the latest core logic chipset for the AMD64 platform by SiS, optimizes the HyperTransport technology with the unique HyperStreaming technology developed by SiS. It greatly improves the data processing efficiency and computing power for both AMD Opteron processor-based workstation platform and the new AMD Athlon 64 processor. Coupled with SiS’s newest south bridge chipset SiS964, SiS755 enhances the performance of the whole system by granting full compatibility and efficiency of the peripheral devices.

The communication core of a PC system is the core logic chipset, which adds to the innovation resulting from microprocessor technology. Through the collaboration with the core logic chipset, the system is able to showcase the overall system capabilities precisely. The SiS755 Chipset, employed with SiS’s brand new HyperStreaming Engine technology, integrates seamlessly with the
AMD Athlon 64 processor’s HyperTransport technology as well as the 8/16-bits connection technology to deliver the Front Side Bus (FSB) transmission speed of up to 6.4GB/sec (1,600MT). It not only works closely with the AMD Opteron and AMD Athlon 64 processors to enable the optimal performance of bandwidth, but also achieves low-latency and high-efficiency data transmission. The AGP 8X interface allows the system to adopt the most advanced graphic cards in the market for the optimal graphic transmission. Moreover, the mature MuTIOL1G technology, also developed by SiS, promises the smoothest data transfer between South and North Bridges.

In addressing most of the users’ concerns on I/O throughput as well as system response time in the network environment, SiS755 brings greater system performance through the tight integration of HyperStreaming and
HyperTransport technology. Compared with other products of the same class on the market, SiS755 is definitely one of the top-notch chipsets for the AMD64 platform.

Along with the latest South Bridge Chipset SiS964, SiS755 accelerates the entire system. Integrated with Serial ATA high-speed transfer interface, the brand-new South Bridge Chipset SiS964 not only supports Dual-Channel parallel ATA, but also adds two independent Serial ATA150 connection ports, which offer storage devices with data transmission speed up to 150MB/sec. Other special features include 8 built-in USB2.0 ports, which meet the requirement for increasing peripheral device connections, full 5.1 channel surround sound, V.90 modem and Ethernet network. The SiS964 also supports Multiple RAID disk array modes, including RAID0, RAID1, and JBOD, which further enhances the stability and performance of the operating environment.

Product Overview 
The SiS755, a
HyperTransport to AGP/MuTIOL Bridge, integrates a high performance HyperTransport™ interface for AMD Athlon 64 / AMD Opteron processor family, AGP interface, and SiS MuTIOL Technology, which connects with SiS964 MuTIOL Media IO.
The
HyperTransport interface of SiS755 features the HyperTransport complaint bus driver technology to support AMD Athlon 64 / AMD Opteron processors up to 1.6GT/s data rate.

The AGP interface of SiS755 can support external AGP slot with AGP 4X/8X capability and Fast Write Transactions. SiS MuTIOL, a high bandwidth and mature technology, is incorporated to connect SiS755 and SiS964 MuTIOL Media IO together.

SiS MuTIOL technology is developed into three layers, the Multi-Threaded I/O Link Layer delivering 1.2 GB/s bandwidth to connect embedded DMA Master devices and external PCI masters to interface to Multi-Threaded I/O Link Layer, the Multi-Threaded I/O Link Encoder/Decoder in SiS964 to transfer data with 1GB/s bandwidth from/to Multi-Threaded I/O Link Layer to/from SiS755, and the Multi-Threaded I/O Link Encoder/Decoder in SiS755 to transfer data with 1GB/s from/to memory sub-system to/from the Multi-Threaded I/O Link Encoder/Decoder in SiS964.
Features

Features

Benefits

CPU supported

AMD Athlon 64 & AMD Opteron

MuTIOL 1G® technology

Proprietary Interconnect between SiS755 and SiS964. SiS MuTIOL® 1G deliver 1GB/s bandwidth.

AGP8X upgrade flexibility

Make system performance upgrade and user's facilitation. Support Maximum AGP interface bandwidth 2.1GB/s. Backwards compatible with AGP 4X.

Integrated SATA Controller with RAID functions.

Provide 2 independent SATA ports, compliant with SATA 1.0 Specification.Support RAID 0, 1 and JBOD.

ATA133 enhancement

Fastest storage support. Increasing data/file transfer rate.

AC97 Controller

Hollywood 3D stereo enriches audio surrounding with up to six channels.

ACR(Advanced Communications Riser) card support

Allow multiple configurations on a single card to extend USB, LAN, HomePNA, modem, and audio for greater flexibility. Compatible to PCI with minimum design changes.

Integrated Communication Controller for LAN or HPNA use

MII interface used for 10/100Mbps LAN or 1/10Mbps HomePNA function. Reaching cost-effective solution and design elasticity.

Integrated USB2.0 Controllers

Support eight dynamically switch USB2.0/ 1.1 ports, to achieve real legacy free systems.

04/22/04 Tech Report
12/23/03
HWUpgrade
11/23/03
AnandTech
12/16/03
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755A01-6EKSR
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