The single chipset, SiS550 family, provides a high performance/low cost SoC (System on Chip) solution by integrating an x86 compatible processor, high performance North Bridge, advanced hardware GUI engine and Super-South bridge. In addition, SiS550 family complies with Easy PC Initiative that supports Instantly Available/OnNow PC technology, USB, Legacy Removal, CIR, Memory Stick, Smart Card and Slotless Design for a variety of IA (Information Appliance) applications.

SiS550 family integrates a high-performance processor that supports x86 instruction set with 3 integer units, 3-way superscalar architecture, and a fully pipelined floating point unit. In addition, the processor is a power-efficient design that optimizes the power consumption for information appliance applications.

By integrating the Ultra-AGP™ technology, SiS550 family delivers high performance GUI-memory bandwidth. Furthermore, SiS550 family provides powerful slice layer decoding DVD accelerator to improve the DVD playback performance (**). In addition to providing the standard interface for CRT monitors, SiS550 family also provides the Digital Flat Panel Port (DFP) for a standard interface between a personal computer and a digital flat panel monitor. To extend functionality and flexibility, SiS also provides the !¡±Video Bridge!¡L (SiS301/SiS302) to support the NTSC/PAL Video Output, Digital LCD Monitor and Secondary CRT Monitor, which reduces the external Panel Link transmitter and TV-Out encoder for cost effected solution. SiS550 family also adopts Share System Memory Architecture that can flexibly utilize the frame buffer size up to 128MB.

The "Super-South Bridge" in SiS550 family integrates wealthy peripheral controllers /accelerators /interfaces. SiS550 family offers AC 97 compliant interface that comprises digital audio engine with hardware DirectSound
accelerator, on-chip sample rate converter, and professional wavetable along with separate modem DMA controller. SiS550 family also provides interface to Low Pin Count (LPC) operating at 33 MHz clock that is the same as PCI clock on the host, the USB host controller with three USB ports and CIR controller deliver better connectivity and wireless flexibility. Furthermore, SiS550 family includes Memory Stick controller (*) and Smart Card (*) controller for various applications.

The built-in fast PCI IDE controller supports the ATA PIO/DMA, and the Ultra DMA33/66/100 function that supports the data transfer rate up to 100 MB/s.

Note (*): The features are only supported by SiS551/SiS552, please refer to system block diagram and feature list for more infomation.

Note (**): The features are only supported by SiS552, please refer to system block diagram and feature list for more information.