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Chipset
SiS651 IGUI Host Memory Controller integrates a high performance host interface
for Intel Pentium 4 processor, a high performance 2D/3D Graphic Engine, a high
performance memory controller, an AGP 4X interface, and SiS MuTIOL®
Technology connecting w/ SiS962 MuTIOL® Media IO.
SiS651 Host Interface features the AGTL & AGTL+ compliant bus driver technology
with integrated on-die termination to support Intel Pentium 4 series processors with
FSB 533/400MHz. SiS651 provides a 12-level In-Order-Queue to support maximum
outstanding transactions up to 12.
It integrated a high performance 2D/3D Graphic Engine, Video Accelerator and
Advanced Hardware Acceleration MPEGI/MPEGII Video Decoder for the Intel
Pentium 4 series based PC systems.
It also integrates a high performance 2.7GB/s DDR333 Memory controller to sustain
the bandwidth demand from the integrated GUI or external AGP master, host
processor, as well as the multi I/O masters. In addition to integrated GUI, SiS651
also can support external AGP slot with AGP 1X/2X/4X capability and Fast Write
Transactions.
A high bandwidth and mature SiS MuTIOL® technology is incorporated to connect
SiS651 and SiS962 MuTIOL® Media I/O together. SiS MuTIOL technology is
developed into three layers, the Multi-threaded I/O Link Layer delivering 1.2GB
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 SiS962 to transfer data w/ 533 MB/s bandwidth from/to Multi-
threaded I/O Link layer to/from SiS651, and the Multi-threaded I/O Link
Encoder/Decoder in SiS651 to transfer data w/ 533 MB/s from/to Multi-threaded I/O.
Key features:
PC2001 Compliance
High Performance Host Interface
•
Support Intel Pentium 4 series CPU with data transfer rate of 533/400MHz
64 bit high performance DDR-266/333 Memory Controller
•
Supports DDR333/DDR266/200 SDRAM or PC133/100 SDRAM
•
Support Up to 2 un-buffered DIMM DDR333 or up to 3 un-buffered Double-sided DIMM
DDR266/200
•
Up to 1 GB per DIMM with max. memory size up to 3 GB
•
Supports 16Mb, 64Mb, 128Mb, 256Mb, 512Mb SDRAM technology with page size from 2KB up to
16KB
•
Sustains DDR SDRAM CAS Latency at options of 2, 2.5, & 3 clocks
•
Programmable buffer strength optimizing performance and stability
•
High performance unified memory controller optimizing the DRAM bus utilization