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SMBus is a two-wire bus for lightweight communication with low-bandwidth devices on a motherboard, derived from I²C. Learn about its electrical, timing, and protocol differences from I²C, and its applications in power management, system enumeration, and platform management standards.
A bus (or databus) is a communication system that transfers data between components inside a computer, or between computers. Learn about the different types of buses, such as address bus, memory bus, system bus, expansion bus, and peripheral bus, and their features and examples.
A control bus is part of the system bus used by CPUs for communicating with other devices within the computer. It carries commands from the CPU and returns status signals from the devices, and has various lines such as read, write, byte enable, and interrupt request.
Learn about the Windows Driver Model (WDM), a framework for device drivers that was introduced with Windows 98 and Windows 2000. WDM drivers are layered in a stack and communicate with each other via I/O request packets (IRPs).
In computing, an input–output memory management unit (IOMMU) is a memory management unit (MMU) connecting a direct-memory-access–capable (DMA-capable) I/O bus to the main memory. Like a traditional MMU, which translates CPU -visible virtual addresses to physical addresses , the IOMMU maps device-visible virtual addresses (also called device ...
HECI is a technology for Active Management Technology (AMT) in Intel chipsets that support Core 2 Duo microprocessors. It allows the host OS to communicate directly with the Management Engine (ME) integrated in the chipset via a bi-directional bus.
AMBA is an open-standard, on-chip interconnect specification for the connection and management of functional blocks in system-on-a-chip (SoC) designs. It supports various buses and interfaces for different performance, power and coherency requirements, and is widely used in embedded microcontrollers and processors.
System Management BIOS (SMBIOS) is a specification that defines data structures and access methods for reading management information from the BIOS of a computer. It is produced by the Distributed Management Task Force (DMTF) and used by various operating systems and software utilities.
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