1.2.6 CHIPSET To reduce number of chips on the motherboard Microprocessor is communication & processing are integrated into 2 or 3 chips These chips integrated with microprocessor Chip contain more than one logic like DMA logic Timer Logic Interrupt logic Peripheral interfaces logic These chips are called as chipset Chip manufactures are Intel VIA technologies (cyrix) Acer labs(ALI) Silicion integrated systems(SIS) OPT1 Chipset connected with processor On board memory System bus Audio & video Input/output ports INTEL PROCESSOR Advantages: Reduce chip count in a computer Reduce power requirement They shorten the signal paths and allow the circuits to operate at higher speeds Improvement reliability Reduce construction cost EXAMPLE CIRCUIT FOR INTEL CHIP 1) Intel 440GX chipset Processor support – Pentium II/III xenon processor multi processor support 2 processor Functional blocks – host bridge controller DMA interrupt controller time Memory support – SDRAM memory (2GB) Bus support – 100 MHZ system bus, PCI bus at 33MHZ Video and audio support – AGP devices Input/Output support – 2 USB ports 2) Intel 440BX chipset Processor support – Pentium II/III xenon processor multi processor support 2 processor Functional blocks: – AGA host bridge controller Memory support – 1GB of SDRAM/DIMM memory Bus support – 100 MHZ system bus, PCI bus at 33MHZ Video and audio support – AGP devices Input/Output support – 2 USB ports 3) Intel 440 ZX chipset Processor support – Pentium II/III processor Functional blocks – AGA host bridge controller Memory support – 256 MB memory 4) Intel 440 FX chipset Processor support – Pentium II and Pentium preprocessor Functional blocks – Data bus accelerator Memory support – 1GB of EDORAM with ECC memory Bus support – 100 MHZ system bus, PCI bus at 33MHZ Video and audio support – Improved MPEG and audio performance Input/Output support – 2 USB ports 5) Intel 440 LX chipset Processor support – Pentium II Functional blocks: – Interrupt controller Timer Enhanced DMA Memory support – 1GB of SDRAM with ECC memory Bus support – Graphics bus, PCI bus at 33MHZ Video and audio support – AGP 1x/2x Input/Output support –USB ports PCI-ISA-IDE 6) Intel 450 series chipset Processor support – Pentium II /Pentium preprocessor Functional blocks – AGA host bridge controller Interrupt controller Timer Enhanced DMA Memory support – 450 GX- 8 GB with ECC Bus support – 2 PCI bus Video and audio support – AGP devices Input/Output support –USB ports 7) Intel 810 series chipset Processor support – Pentium II /Pentium preprocessor Functional blocks– Memory controller hub & controller hub & firmware Memory support – 512 MB memory Bus support – PCI bus Video and audio support – AGP2.0 devices Input/Output support –dual USB ports 8) Intel 815 series chipset Processor support – Pentium III Functional blocks – Memory controller hub Memory support – 512 MB memory Bus support – PCI bus Input/Output support –2 USB ports 9) Intel 820 series chipset Processor support – Pentium II /Pentium preprocessor Functional blocks – controller hub Memory suppor – 1GB system memory Bus support – 133 MHZ system bus Video and audio support – AGP 4X Input/Output support –dual USB ports 10) Intel 850 series chipset Processor support – Pentium IV Functional blocks – Memory controller hub Memory support – 2GB of RDRAM Bus support – four 100 MHZ system bus Video and audio support – AGP 4X Input/Output support –four USB ports .