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Title	Document #	Date
LPDDR5/5X Serial Presence Detect (SPD) Contents Release Number: 1.0	JESD406-5A	Nov 2024
This publication describes the serial presence detect (SPD) values for all LPDDR5/5X 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 use by the system's BIOS in order to properly initialize and optimize the system memory channels. The storage capacity of the SPD non-volatile memory is limited, so a number of techniques are employed to optimize the use of these bytes, including overlays and run length limited coding. A list of RAND License Assurance/Disclosure Forms is available to JEDEC members on the restricted Members' website. Non-members may obtain individual Assurance/Disclosure forms by requesting them from the JEDEC office. Committee(s): JC-45 Free download. Registration or login required.
SPD General Standard.	SPD4.1.2	Jul 2008
Release No. 19. Item 2065.26 A list of RAND License Assurance/Disclosure Forms is available to JEDEC members on the restricted Members' website. Non-members may obtain individual Assurance/Disclosure forms by requesting them from the JEDEC office. 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 A list of RAND License Assurance/Disclosure Forms is available to JEDEC members on the restricted Members' website. Non-members may obtain individual Assurance/Disclosure forms by requesting them from the JEDEC office. 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). A list of RAND License Assurance/Disclosure Forms is available to JEDEC members on the restricted Members' website. Non-members may obtain individual Assurance/Disclosure forms by requesting them from the JEDEC office. 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 A list of RAND License Assurance/Disclosure Forms is available to JEDEC members on the restricted Members' website. Non-members may obtain individual Assurance/Disclosure forms by requesting them from the JEDEC office. Committee(s): JC-45, JC-45.3 JESD21-C Solid State Memory Documents Main Page Free download. Registration or login required.

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