The Motherboard o
circuitboard which connects the most important components of the
Large
computer ie CPU memory and
connectors for other peripherals
connected via busses purpose8 transport data
Has evolved
quickly due to quest for faster cheaper and smaller
components that produce better results
Purpose 1 Role of the Motherboard
Provides a platform to co ordinate interaction between component
achieved via chipsets
Chipsets
Set of chips used on a motherboard to connect componets
Controller Hardware
Circuitry responsible for managing a specific hardware part ofcomp
e controller labelled
g
DMA memory managed by memory
allows hardware to acess DDirect
of CPU memory
independently
hence CPU can do other enhance Memory
paccess
thing performance
CDMA
Chipset containslogic circuits to support the
purpose for which the motherboard is
type one of processors
designed usually only suppurts type
companies the manufacture CPUs North and Southbridge
chips that hold were
Intel combined logic
motherboard chipset
was created
AMP North S Southbridge
Cabo manufacture have different functions
for own processors
chipsets supporting different components
haveto belong to one
specific chipset
Cpu
accelerated
n
FSB
f front side bus
graphics 1 V
port AGP c RAM
North c
bridge
USBPYE
Southbridge Negacy
ISAS I E BIOS
, All motherboard components are connected to
or Cas in
Northbridge
need for fasterSoutbridge
operation connected diagram
to Nb
no need for immediate fast connected to Sb
processing
Hardware components have own controlling
that works with chipset circuitry
Northbridge
Nb chip Memory Controller Hub connectsto
CPU
RAM AND produced
graphics card Unified Media
Southbridge Iterface CUMI
interconnect as a
Functions link between Fusion
controller CPU S FusionController
memory
PCI Express controller HubCECH their
AGP bus controller version of the Sb
Interface for data transfer with Sb chip
Southbridge
also called I10 Controller Hub CICH or Platform
controller Hub PCH
connected to NB
in charge of controlling I10 devices and on board devices
ie storage ports
USB ports
on board audio
On board LAN
PCI bus Cif available
PCI Express lanes C 7
Real time clock CRTC
CMOS
BIOS memory
Legacy devices such as interrupt controller and DMA
controller on
ISA slots old motherboards
Otherintegrated devices the motherboard might have
SB connected to ROM chip CBIOS and Super IN chip
which is in charge of controlling legacy devices
The Inter Architecture
CommunicationBridge between NB and SB is done via PCI bus
bandwidth shared between all PCI devices
when highend video cards and high performance hard disk
drives were launched bottelneck situation accured
Solution video cards 3 creation of new busconnected to NB
Accelerated graphics Port DGP
circuitboard which connects the most important components of the
Large
computer ie CPU memory and
connectors for other peripherals
connected via busses purpose8 transport data
Has evolved
quickly due to quest for faster cheaper and smaller
components that produce better results
Purpose 1 Role of the Motherboard
Provides a platform to co ordinate interaction between component
achieved via chipsets
Chipsets
Set of chips used on a motherboard to connect componets
Controller Hardware
Circuitry responsible for managing a specific hardware part ofcomp
e controller labelled
g
DMA memory managed by memory
allows hardware to acess DDirect
of CPU memory
independently
hence CPU can do other enhance Memory
paccess
thing performance
CDMA
Chipset containslogic circuits to support the
purpose for which the motherboard is
type one of processors
designed usually only suppurts type
companies the manufacture CPUs North and Southbridge
chips that hold were
Intel combined logic
motherboard chipset
was created
AMP North S Southbridge
Cabo manufacture have different functions
for own processors
chipsets supporting different components
haveto belong to one
specific chipset
Cpu
accelerated
n
FSB
f front side bus
graphics 1 V
port AGP c RAM
North c
bridge
USBPYE
Southbridge Negacy
ISAS I E BIOS
, All motherboard components are connected to
or Cas in
Northbridge
need for fasterSoutbridge
operation connected diagram
to Nb
no need for immediate fast connected to Sb
processing
Hardware components have own controlling
that works with chipset circuitry
Northbridge
Nb chip Memory Controller Hub connectsto
CPU
RAM AND produced
graphics card Unified Media
Southbridge Iterface CUMI
interconnect as a
Functions link between Fusion
controller CPU S FusionController
memory
PCI Express controller HubCECH their
AGP bus controller version of the Sb
Interface for data transfer with Sb chip
Southbridge
also called I10 Controller Hub CICH or Platform
controller Hub PCH
connected to NB
in charge of controlling I10 devices and on board devices
ie storage ports
USB ports
on board audio
On board LAN
PCI bus Cif available
PCI Express lanes C 7
Real time clock CRTC
CMOS
BIOS memory
Legacy devices such as interrupt controller and DMA
controller on
ISA slots old motherboards
Otherintegrated devices the motherboard might have
SB connected to ROM chip CBIOS and Super IN chip
which is in charge of controlling legacy devices
The Inter Architecture
CommunicationBridge between NB and SB is done via PCI bus
bandwidth shared between all PCI devices
when highend video cards and high performance hard disk
drives were launched bottelneck situation accured
Solution video cards 3 creation of new busconnected to NB
Accelerated graphics Port DGP
