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This standard defines the electrical and mechanical requirements for 288-position, 1.1 Volt (VDD and VDDQ), DDR5 Registered (RDIMM), Double Data Rate (DDR), Synchronous DRAM Dual In-Line Memory Modules (DIMM). These Registered DDR5 SDRAM DIMMs are intended for use in server, workstation, and database environments.

Committee(s): JC-45, JC-45.1

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This standard, JESD305-R8-RCE, DDR5 Registered Dual Inline Memory Module with 8-bit ECC (EC8 RDIMM) Raw Card E Annex, defines the design detail of x8, 2 Package Rank DDR5 RDIMM with 8-bit ECC. The common feature of DDR5 RDIMM, such as the connector pinout, can be found in the JESD305, DDR5 Registered Dual Inline Memory Module (RDIMM) Common Standard.

Committee(s): JC-45, JC-45.1

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Terminology update.  

This standard defines standard specifications of DC interface parameters, switching parameters, and test loading for definition of the SSTUB32869 registered buffer with parity for driving heavy load on high density DDR2 RDIMM applications. A typical application would be a 36 SDRAM planar DIMM.

Committee(s): JC-40

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Terminology update.

This standard defines standard specifications of DC interface parameters, switching parameters, and test loading for definition of the SSTU32864 configurable registered buffer for DDR2 RDIMM applications.

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

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Terminology update.  
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. The purpose is to provide a standard for the SSTUB32868 (see Note) logic device, for uniformity, multiplicity of sources, elimination of confusion, ease of device specification, and ease of use.

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. SSTU32S2868 denotes a single-die implementation and SSTU32D868 denotes a dual-die implementation. This is a minor editorial revision as shown in Annex A of the document.

Committee(s): JC-40

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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 specification defines the electrical and mechanical requirements for Raw Card D, 288-pin, 1.2 Volt (VDD), Registered, Double Data Rate, Synchronous DRAM Dual In-Line Memory Modules (DDR4 SDRAM RDIMMs). These DDR4 Registered DIMMs (RDIMMs) are intended for use as main memory when installed in PCs. Item 2149.08c

Committee(s): JC-45, JC-45.1

JESD21-C Solid State Memory Documents Main Page

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Item 2241.06B

This specification defines the electrical and mechanical requirements for Raw Card G, 288-pin, 1.2 Volt (VDD), Registered, Double Data Rate, Synchronous DRAM Dual In-Line Memory Modules (DDR4 SDRAM RDIMMs). These DDR4 Registered DIMMs (RDIMMs) are intended for use as main memory when installed in PCs.

Committee(s): JC-45.1

JESD21-C Solid State Memory Documents Main Page

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