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Welcome to CHIPTRONIKS Repairing Research Institute Chiptroniks is market leader in Chip Level Repair Training Laptop ,Mobile,LED LCD TV,printer,CCTV Repair Training Institute.(लैपटॉप,मोबाइल, एलईडी एलसीडी टीवी, प्रिंटर, सीसीटीवी रिपेयरिंग ट्रेनिंग सेंटर।)
When we look at communication on notebook motherboard , i think it embodies the latest communication technology developed till now. If we discuss communication(chip-to chip , chip to device) on notebook motherboard, it can be very easily understood , if we take analogue of computer network . Like in computer network , we have router, modem , LAN cable and computers are connected on LAN each with its own IP . similarly in notebook there are various chips like CPU , north bridge, south bridge, IO controller, BIOS and all need to communicate each other .And each device /chip have its own address and the process of memory address initialization occurs when bios is read at boot time. Where are the lan wires on the notebook ? its thr in form of buses and then we have differenty types of buses and the core type is same PCI or PCI Express . Lets look connection between north bridge(GMCH/MCH) and CPU , we can see DMI(Direct media interface) written on schmeatics , this is a type of PCI in board implementing below ICH5(older boards) and this connection is type of PCI Express(newer boards implementing ICH8 and more) . Now where is the router on notebook .As we know router routes/forwards the address. , similarly memory controller ( memory controller is in GMCH and newer boards In CPU) , so GMCH is the router , it lets CPU to access any components. The CPU doesnt know how many devices are thr and how much ram is thr , it just forwards the address to GMCH , and the magic is that BIOS address is hardcoded , its address has remain unchanged since the evolution of computer and CPU forwards its request at same address in any kind of boards(i3, dual core, core2 duo) . In my coming post i will give insight in more details .
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