SouthBridge is a reference to a Chipset on a PC Motherboard. It is a set of Microchips designed for a single feature and synthetic as a single uNit. This Chipset controls or manages enter and Output (I/O). Examples of I/O Interface connections managed through southbridge are USB, serial, IDE and ISA. These are the slower skills of the motherboard. It is placed on the Northbridge of the PCI Bus and isn't always at once connected to the CPU, but linked to the CPU via the northbridge.
Southbridge is certainly one of two chipsets generally known as northbridge/southbridge. Northbridge is a chipset conTrolling the Processor, reminiscence, PCI bus, degree 2 Cache and AGP (improved photos port) Functions.
The call comes from the original 1991 Intel motherboard layout. This layout had the PCI local bus (the Backbone) inside the middle and the CPU, Memory/cache and other high overall perFormance-vital Components located above or to the north. The much less overall performance-essential additives were positioned below, or to the south of, the PCI local bus. Bridges to those two sets of components from the backbone are often referred to as southbridge and northbridge, even though cutting-edge structure has cHanged the PCI bus backbone with quicker I/O buses.
Motherboard diagrams may commonly seek advice from the southbridge because the I/O Controller hub and the northbridge as the reminiscence Controller hub.
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