Intel Netstructure MPRTM0020 Rear Transition module manual Acronyms and Terms Sheet 2, I2C

Document Organization
Table 1.	Acronyms and Terms (Sheet 2 of 2)
	Term	Definition
	Hot Swap	A specific specification from the PICMG 3.0 Spec.
	I2C	A two-wire serial bus. Licensed by Phillips Semiconductors.
	IA-32	32-bit Intel® Architecture
	I/O	Input/Output
	IPMB	Intelligent Platform Management Bus. The bus that interconnects all boards in the chassis
		to the Shelf Manager.
		Intelligent Platform Management Bus Channel 0 as defined in the IPMI v1.5 specification.
	IPMB-0	This is the logical aggregation of IPMB-A and IPMB-B. The use of IPMB Channels 1 through
		7 are not defined in this specification.
	IPMB-R	Local IPMI link that is on the “carrier” side of the IPMC device. The IPMC shall proxy for all
		IPMB-R devices (AMCs and RTM).
	IPMC	Intelligent Platform Management Controller. The portion of a FRU that interfaces to the
		AdvancedTCA* IPMB-0 and represents that FRU and any device subsidiary to it.
	IPMI	Intelligent Platform Management Interface. The overall specification for doing point-to-point
		management communication within the chassis over and I2C bus.
	JBOD	Just a Bunch of Drives
	Node Slot	Any standard slot other than a fabric slot
	OOS	Out of Service
	PCI	Peripheral Component Interconnect. Bus technology used to interconnect components in a
		computer.
	PICMG	PCI Industrial Computer Manufacturers Group
	PMC	PCI Mezzanine Card
	Power Module	Either a power supply or a power entry module
	RMC	RTM Management Controller. The IPMI controller on an RTM, similar to an MMC.
	RMCP	Remote Management Control Protocol. Defined by IPMI 1.5.
	RMD	RTM Management Device. A non-intelligent device (typically an ADM1026) that
		communicates over I2C to the Front Board IPMC, rather than using IPMB like an RMC does.
	RTM	Rear Transition Module
	SAS	Serial Attached SCSI
	SDR	Sensor Data Record. An IPMI term. Used to describe the name, meaning, and units of
		measure for a particular data value provided by a PM or BMC.
	SEL	Sensor Event Log. An IPMI defined term. Maintained by the BMC.
	Shelf	A shelf is equivalent to a chassis.
		A pluggable board that provides management functions, allowing the chassis backplane to
		remain passive. Although the term implies a dedicated module, the Shelf Manager may be
	Shelf Manager	one function of a multi-function module. For example, the Shelf Manager and a switch can
		be combined in a single physical module. The Shelf Manager performs the BMC function
		within the chassis and provides remote management capabilities.
	SMBus	A two-wire serial bus with slightly different electrical and timing characteristics than I2C. This
		technology is owned by Intel Corporation.
	SMC	Satellite Management Controller. Defined by IPMI. Also known as a peripheral controller or
		peripheral management controller.
	Switch Slot	See “Fabric Slot”
	TPS	Technical Product Specification

8 Intel NetStructure® MPRTM0020 Technical Product Specification – April 2006