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This document is a core specification for a Fully Buffered DIMM (FBD) memory system. This document, along with the other core specifications, must be treated as a whole. Information critical to a Advanced Memory Buffer design appears in the other specifications, with specific cross-references provided.

Patents(): There are known patent issues that are common to all FBDIMM related specifications. See document for link to FBDIMM Patents.

Committee(s): JC-40

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Terminology update.
This device is a one-chip spectrum analyzer that operates in the frequency range from 1 to 2 GHz.It requires no external components except some filtering of the voltage supply (one inductor, one bypass capacitor).
The frequency of the VCO is adjusted by an internal DAC. No PLL loop is used to lock the VCO to a reference frequency. A counter is used to determine the VCO frequency.

Committee(s): JC-40, JC-40.4

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This standard provides a reference specification for systems and device management capabilities found in CXL memory devices. It is intended to target, but may not be limited to, CXL memory FRUs that are based on PCIe Gen 5 and compliant to the CXL 2.0 Specification or later.

Committee(s): JC-40, JC-45

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Terminology update.

The Load Reduced DIMM (LRDIMM) Memory Buffer (MB) supports DDR3 SDRAM main memory. The Memory Buffer allows buffering of memory traffic to support large memory capacities. Unlike DDR3 Register Buffer (SSTE32882), which only buffers Command, Address, Control and Clock, the LRDIMM Memory Buffer also buffers the Data (DQ) interface between the Memory Controller and the DRAM components.

Committee(s): JC-40, JC-40.4

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