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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.
SPD5118 HUB AND SERIAL PRESENCE DETECT DEVICE STANDARD Release Number: Version 1.5	JESD300-5B	Jul 2022
This standard defines the specifications of interface parameters, signaling protocols, and features for DDR5 Serial Presence Detect EEPROM with Hub function (SPD5 Hub) and integrated Temperature Sensor (TS) as used for memory module applications. The Hub feature allows isolation of a local bus from a Controller host bus. The designation SPD5118 or generic term SPD5 Hub refers to the devices specified by this standard. Committee Item 600.02A Committee(s): JC-40.1 Free download. Registration or login required.
Definition of the EE1002 and EE1002A Serial Presence Detect (SPD) EEPROMs	SPD4.1.3-01	May 2022
Release No. 19.01. Item 1739.02E, Terminology update. This standard defines the specifications of interface parameters, signaling protocols, and features for Serial Presence Detect (SPD) EEPROMs as used for memory module applications. Committee(s): JC-42, JC-42.4 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.

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