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Title	Document #	Date
DDR5 Serial Presence Detect (SPD) Contents Terminology update Release Number: Version 1.1	JESD400-5A.01	Jan 2023
This standard describes the serial presence detect (SPD) values for all DDR5 memory modules. In this context, “modules” applies to memory modules like traditional Dual In-line Memory Modules (DIMMs) or solder-down motherboard applications. The SPD data provides critical information about all modules on the memory channel and is intended to be used by the system's BIOS in order to properly initialize and optimize the system memory channels. Committee(s): JC-45 Free download. Registration or login required.
240-Pin PC3-6400/PC3-8500/PC3-10600/PC3-12800/PC3-14900/PC3-17000 DDR3 SDRAM Unbuffered DIMM Design Specification	MODULE4.20.19	May 2021
Release No. 31. Item 2131.03, 2078.04, 2131.06 This revision contains terminology updates only. Committee(s): JC-45, JC-45.2, JC-45.3 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required.
240-Pin PC2-5300/PC2-6400 DDR2 SDRAM Unbuffered DIMM Design Specification	MODULE4.20.13	May 2021
Release 31. Item 2167.05 This revision contains terminology updates only. Committee(s): JC-45, JC-45.2, JC-45.3 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required.
SPD Annex L: Serial Presence Detect (SPD) for DDR4 SDRAM Modules, Release 6 Release Number: 30	SPD4.1.2.L-6	Nov 2020
This annex describes the serial presence detect (SPD) values for all DDR4 modules covered in Document Release 6. Differences between module types are encapsulated in subsections of this annex. These presence detect values are those referenced in the SPD standard document for ‘Specific Features’. Item 2220.01H. Committee(s): JC-45 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required.
Annex M: Serial Presence Detect (SPD) for LPDDR3 and LPDDR4 SDRAM Modules, Release 1 Release Number: 25	SPD4.1.2.M-1	Nov 2015
Committee Document Reference Title: LPDDR3 and LPDDR4 SPD Document Release 1 Device Type Identifier: LP-DIMM Revision 1.0 This Annex describes the serial presence detect (SPD) values for all LPDDR modules. Differences between module types are encapsulated in subsections of this annex. These presence detect values are those referenced in the SPD standard document for ‘Specific Features’. The following SPD fields will be documented in the order presented in Section 2, with the exception of bytes 128~255 which are documented in separate sections, one for each family of module types. Further description of Byte 2 is found in Annex A of the SPD standard. Item 2254.01 Committee(s): JC-45 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required.
204-Pin DDR3 SDRAM Unbuffered SODIMM Design Specification	MODULE4.20.18	May 2014
Release No. 24; Item 2114.44 Committee(s): JC-45, JC-45.3 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required.
SPD Annex K - Serial Presence Detect (SPD) for DDR3 SDRAM Modules, Release 6	SPD4.1.2.11	Feb 2014
Release No. 24. Item 2065.47A Committee(s): JC-45 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required.
SPD Annex L: Serial Presence Detect (SPD) for DDR4 SDRAM Modules, Release 2 Release Number: 23A	SPD4.1.2.L-2	Jan 2014
This annex describes the serial presence detect (SPD) values for all DDR4 modules covered in Document Release 2. Differences between module types are encapsulated in subsections of this annex. These presence detect values are those referenced in the SPD standard document for ‘Specific Features’. (This release is editorial changes only). Committee(s): JC-45 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required.
SPD Annex L: Serial Presence Detect (SPD) for DDR4 SDRAM Modules, Release 1 Release Number: 23	SPD4.1.2.L-1	Nov 2013
This annex describes the serial presence detect (SPD) values for all DDR4 modules covered in Document Release 1. Differences between module types are encapsulated in subsections of this annex. These presence detect values are those referenced in the SPD standard document for ‘Specific Features’. Item 2220.01 Committee(s): JC-45 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required.
Annex N, R/C N, in 240-Pin PC3-6400/PC3-8500/PC3-10600/PC3-12800 DDR3 SDRAM Registered DIMM Design Specification. Item 2145.22	MODULE4.20.20.N	Sep 2012
Release No. 22. Item 2145.35 Committee(s): JC-45, JC-45.1 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required.
204-Pin EP3-6400/EP3-8500/EP3-10600/EP3-12800 DDR3 SDRAM 72b-S0-DIMM Design Specification	MODULE4.20.21	Aug 2012
Release 22. Item 2189.17 Committee(s): JC-45, JC-45.1 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required.
240-Pin PC3-6400/PC3-8500/PC3-10600/PC3-12800/PC3-14900/PC3-17000 DDR3 SDRAM Registered DIMM Design Specification	MODULE4.20.20	Feb 2012
Release No. 22. Item 2082.94A Committee(s): JC-45, JC-45.1 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required.
Annex AB, R/C AB in 240-Pin PC3-6400/PC3-8500/PC3-10600/PC3-12800/PC3-14900/PC3-17000 DDR3 SDRAM Registered DIMM Design Specification	MODULE4.20.20.AB	May 2011
Release No. 21 Item 2202.01 Committee(s): JC-45.1 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required.
Annex J, R/C J in 240-Pin PC3-6400/PC3-8500/PC3-10600/PC3-12800/PC3-14900/PC3-17000 DDR3 SDRAM Registered DIMM Design Specification.	MODULE4.20.20.J	May 2011
Release No. 21 Item 2082.93 Committee(s): JC-45, JC-45.1 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required.
240-Pin PC2-6400/PC2-5300/PC2-4200/PC2-3200 DDR2 SDRAM Registered DIMM Design Standard, Rev 4.04.	MODULE4.20.10	Jan 2010
Release No. 19A. Items 2133.37, 2191.00, 2191.02, 2129.12, 2113.33. Committee(s): JC-45, JC-45.1 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required.
Annex W, R/C W, in 240-Pin PC3-6400/PC3-8500/PC3-10600/PC3-12800 DDR3 SDRAM Registered DIMM Design Specification. Item 2156.07	MODULE4.20.20.W	Aug 2009
Release No. 19 Committee(s): JC-45, JC-45.1 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required.
Annex Y, R/C Y, in 240-Pin PC3-6400/PC3-8500/PC3-10600/PC3-12800 DDR3 SDRAM Registered DIMM Design Specification. Item 2156.06	MODULE4.20.20.Y	Aug 2009
Release No. 19 Committee(s): JC-45.1, JC-45 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required.
200-Pin DDR2 SDRAM Unbuffered SODIMM Design Specification	MODULE4.20.11	Jun 2008
Release No. 18. Item 2168.01 Committee(s): JC-45, JC-45.3 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required.
144-Pin EP2-2100 DDR2 SDRAM 32b S0DIMM Design Specification, Rev 1.0. Item 2043.09.	MODULE4.20.16	Feb 2007
Release No. 16 Committee(s): JC-45, JC-45.3 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required.
SPD Annex J: Serial Presence Detect for DDR2 SDRAM	SPD4.1.2.10	Jan 2007
Release No. 17 Committee(s): JC-42, JC-45 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required.

Standards & Documents Search

DDR5 Serial Presence Detect (SPD) Contents

240-Pin PC3-6400/PC3-8500/PC3-10600/PC3-12800/PC3-14900/PC3-17000 DDR3 SDRAM Unbuffered DIMM Design Specification

240-Pin PC2-5300/PC2-6400 DDR2 SDRAM Unbuffered DIMM Design Specification

SPD Annex L: Serial Presence Detect (SPD) for DDR4 SDRAM Modules, Release 6

Annex M: Serial Presence Detect (SPD) for LPDDR3 and LPDDR4 SDRAM Modules, Release 1

204-Pin DDR3 SDRAM Unbuffered SODIMM Design Specification

SPD Annex K - Serial Presence Detect (SPD) for DDR3 SDRAM Modules, Release 6

SPD Annex L: Serial Presence Detect (SPD) for DDR4 SDRAM Modules, Release 2

SPD Annex L: Serial Presence Detect (SPD) for DDR4 SDRAM Modules, Release 1

Annex N, R/C N, in 240-Pin PC3-6400/PC3-8500/PC3-10600/PC3-12800 DDR3 SDRAM Registered DIMM Design Specification. Item 2145.22

204-Pin EP3-6400/EP3-8500/EP3-10600/EP3-12800 DDR3 SDRAM 72b-S0-DIMM Design Specification

240-Pin PC3-6400/PC3-8500/PC3-10600/PC3-12800/PC3-14900/PC3-17000 DDR3 SDRAM Registered DIMM Design Specification

Annex AB, R/C AB in 240-Pin PC3-6400/PC3-8500/PC3-10600/PC3-12800/PC3-14900/PC3-17000 DDR3 SDRAM Registered DIMM Design Specification

Annex J, R/C J in 240-Pin PC3-6400/PC3-8500/PC3-10600/PC3-12800/PC3-14900/PC3-17000 DDR3 SDRAM Registered DIMM Design Specification.

240-Pin PC2-6400/PC2-5300/PC2-4200/PC2-3200 DDR2 SDRAM Registered DIMM Design Standard, Rev 4.04.

Annex W, R/C W, in 240-Pin PC3-6400/PC3-8500/PC3-10600/PC3-12800 DDR3 SDRAM Registered DIMM Design Specification. Item 2156.07

Annex Y, R/C Y, in 240-Pin PC3-6400/PC3-8500/PC3-10600/PC3-12800 DDR3 SDRAM Registered DIMM Design Specification. Item 2156.06

200-Pin DDR2 SDRAM Unbuffered SODIMM Design Specification

144-Pin EP2-2100 DDR2 SDRAM 32b S0DIMM Design Specification, Rev 1.0. Item 2043.09.

SPD Annex J: Serial Presence Detect for DDR2 SDRAM

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