Serial presence detect - Wikipedia
In computing, serial presence detect (SPD) is a standardized way to automatically access information about a memory module. Earlier 72-pin SIMMs included five pins that provided five bits of parallel presence detect (PPD) data, but the 168-pin DIMM standard changed to a serial presence detect to encode more information.
PC SDRAM Serial Presence Detect (SPD) Specification Nov, 1999 5 of 30 Revision 1.2B 1.0 Introduction This specification defines the Serial Presence Detect (SPD) electrical and Data Structure requirements for Synchronous DRAM Dual In-Line Memory Modules (SDRAM DIMMs) and Small-outline Memory Modules (SO-DIMM).
Serial Presence Detect (SPD) standard is intended for use on any memory module, independent of memory technology or module form factor. At the point of standardization of any given memory module, SPD being defined within this standard, may be easily implemented if so chosen.
Understanding DDR4 Serial Presence Detect (SPD) Table
Serial Presence Detect (SPD) data is probably the most misunderstood subject in the memory module industry. Most people only know it as the little Eeprom device on the DIMM that often kept the module from working properly in the computer. On the contrary, it is quite the opposite.
Annex L: Serial Presence Detect (SPD) for DDR4 SDRAM Modules DDR4 SPD ...
Timing parameters in the SPD represent the operation of the module including all DRAMs and support devices at the lowest supported supply voltage (see SPD byte 11), and are valid from tCKAVGmin to tCKAVGmax (see SPD bytes 18 and 19).
Serial Presence Detect | JEDEC
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.
SIMCHECK II SPD MANAGEMENT - memorytesters.com
SIMCHECK's SPD Management mode is the operational mode to read and program SPD data. When SIMCHECK operates as a stand alone unit, you can read SPD data from a master module into a buffer in SIMCHECK's own memory, and then use the buffer's data to verify or program SPD chips on other modules.
Understanding DDR3 Serial Presence Detect (SPD) Table
Serial Presence Detect (SPD) data is probably the most misunderstood subject in the memory module industry. Most people only know it as the little Eeprom device on the DIMM that often kept the module from working properly in the computer.
Application Note INN-8668-APN3 - SDRAM SPD Data Standards
May 10, 2005 · The Serial Presence Detect (SPD) device is a small 8-pin 256-byte EEPROM chip, mounted on a 168-pin DIMM module or a 144-pin SO DIMM module. It contains important information about the module's speed, size, addressing mode and various other parameters, so that the motherboard memory controller (chipset) can better access the memory device.
Serial Presence Detect Technical Reference SMMU001 January 1998 Printed on Recycled Paper