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This standard provides the functional definition, ball-out configuration and package outline, signal definitions and input/output characteristics for a 28-bit 1:2 registered driver with parity suitable for use on DDR2 RDIMMs. The SSTU32865 integrates the functional equivalent of two SSTU32864 devices (as defined in JESD82-7) into a single device, thereby easing layout and board design constraints especially on high density RDIMMs such as dual rank, by four configurations. Moreover, the optional use of a parity function is provided for, permitting detection and reporting of parity errors across its 22 data inputs. JESD82-9 specifies a 160-pin Thin-profile, fine-pitch ball-grid array (TFBGA) package. This is a minor editorial revision as shown in Annex A of the document.

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

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This standard defines standard specifications of dc interface parameters, switching parameters, and test loading for definition of the SSTUA32866 registered buffer with parity test for DDR2 RDIMM applications. The purpose is to provide a standard for the SSTUA32866 (see Note) logic device, for uniformity, multiplicity of sources, elimination of confusion, ease of device specification, and ease of use. This is a minor editorial revision as shown in Annex A of the document.

Committee(s): JC-40, JC-40.3

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This document defines standard specifications of DC interface parameters, switching parameters, and test loading for definition of the DDR5 Registering Clock Driver (RCD) with parity for driving address and control nets on DDR5 RDIMM and LRDIMM applications. The DDR5RCD01 Device ID is DID = 0x0051.

Committee(s): JC-40.4

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This standard defines standard specifications for features and functionality, DC and AC interface parameters and test loading for definition of the DDR4 data buffer for driving DQ and DQS nets on DDR4 LRDIMM applications. Any TBDs as of this document, are under discussion by formulating committee. Item 314.11D

*If you downloaded this file between 8/7/2019 and 8/14/2019, please download again, the publication date on the document was incorrected and has been fixed.

Patents(): A complete list of Assurance/Disclosure Forms is available to JEDEC members in the Members Area. Non-members can obtain individual Assurance/Disclosure Forms on request from the JEDEC office.

Committee(s): JC-40.4

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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. The Memory Buffer interface is responsible for memory requests to and from the local DIMM. LRDIMM provides a high memory bandwidth, large capacity channel solution for DDR3 main memory systems. LRDIMM uses commodity DRAMs isolated from the channel behind the Memory Buffer on the DIMM.

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

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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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This standard defines standard specifications of dc interface parameters, switching parameters, and test loading for definition of the SSTUB32868 registered buffer with parity test for DDR2 RDIMM applications.

Committee(s): JC-40

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This standard defines standard specifications of dc interface parameters, switching parameters, and test loading for definition of the SSTUB32865 registered buffer with parity for 2 rank by 4 or similar high-density DDR2 RDIMM applications. The SSTUB32865 is identical in functionality to the SSTU32865 but specifies tighter timing characteristics and a higher application frequency of up to 410MHz.

Committee(s): JC-40

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This standard defines standard specifications of dc interface parameters, switching parameters, and test loading for definition of the SSTUB32866 registered buffer with parity test for DDR2 RDIMM applications.

Committee(s): JC-40

Free download. Registration or login required.