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N/B Maintenance
N/B Maintenance
1.2.3 Core Logic_SiS650 + SiS961
1.2.3.1 SiS650 IGUI Host/Memory Controller
SiS650 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/ SiS961 MuTIOL® Media IO.
SiS650 Host Interface features the AGTL & AGTL+ compliant bus driver technology with integrated on-
die termination to support Intel Pentium 4 processors. SiS650 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 2.1GB/s DDR266 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, SiS650 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 SiS650 and SiS961 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 SiS961 to transfer data w/ 533 MB/s bandwidth from/to Multi-
threaded I/O Link layer to/from SiS650, and the Multi-threaded I/O Link Encoder/Decoder in SiS650 to
transfer data w/ 533 MB/s from/to Multi-threaded I/O Link layer to/from SiS961.
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