Support Synchronous and Asynchronous Host/SDRAM Clock Schemes

- 100MHz and 133MHz Host Bus Frequencies

- 100MHz and 133MHz Memory Bus Frequencies

Integrated DDR SDRAM Controller

- Up to 3 DIMMs of Unbuffered PC133 SDRAM

- Max. 512MB per DIMM and up to 1.5GB System Memory

- Dynamic Pin-Out Definitions Optimized for SDRAM Trace Layout

Built-in Multi-Threaded I/O Link Bridging Internal North-Bridge, South-Bridge and External PCI Devices with 1.2GB/s Bandwidth

- Dedicated High-Speed Data Paths Connecting North-Bridge and Each South-Bridge Masters Including IDE, USB, Audio, Modem, MAC Controllers

- Streamline Internal Data Transfers To/From Memory With Parallel Transactions

- Concurrent External PCI Devices and Embedded Devices Transactions

Support AGP 2X/4X Interface

- Support Fast Write Transaction

- AGP V2.0 Compliant

- Support Graphic Window Size from 4MB to 256MB

Dual IDE Channels with ATA 33/66/100

Support Up to 6 PCI Masters

Dual USB OpenHCI Host Controllers with 6 USB Ports

Integrated Audio/Modem Controllers with AC'97 Interface

- Supports AC'97 V2.1 Audio Codec

- Supports S/PDIF-Out

- Compliant with AMR

- Audio Driver WHQL ready for Windows 98R , Windows 2000R , Windows MER

Advanced Power Management

- ACPI 1.0b and APM 1.2 Compliant

LPC 1.0 Interface

Integrated RTC

Integrated Keyboard/PS2 Mouse Controller

PC2001 Compliant

1.8V Core with Mixed 1.5V, 2.5V, and 3.3V I/O CMOS Technology

682-Ball BGA

SiS733 overview

The single chip, SiS733, provides a high performance/low cost Desktop solution for the AMD socketA series CPUs based system by integrating a high performance North Bridge, Super-South bridge and an AGP4X Slot. SiS733 supports 3-DIMM with PC133 SDRAM with bandwidth up to 1.06 GB/s and also supports an AGP Slot that supports 4X data transfers and Fast Write function.

The "Super-South Bridge" in SiS733 integrates rich peripheral controllers/accelerators/interfaces and is compliant to PC2001. SiS733 offers AC'97 compliant interface and also provides interface to Low Pin Count (LPC) operating at 33 MHz clock which is the same as PCI clock on the host, and dual USB host controllers with six USB ports that deliver better connectivity and 2 x 12Mb bandwidth. SiS733 supports up to 6 PCI masters. In addition to the PIC, the super-south bridge also incorporates I/O Advanced Programmable Interrupt controller.

The built-in fast 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. It provides the separate data path for two IDE channels that can eminently improve the performance under the multi-tasking environment.

SiS733 provides one solution to resolve the lack of I/O bandwidth for the previous PC platform with PCI bus bandwidth only up to 133MB/s. SiS733 applies the multi-threaded architecture - "Build-in Multi-threaded I/O Link" to provide enough I/O bandwidth up to 1.2GB/s and increase the hardware parallelism. It will increase efficiently the system total throughput and performance, especially for multi-tasking environment.