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serial presence detect (SPD)

Serial Presence Detect (SPD) is a method standardized by the Joint Electron Device Engineering Council (JEDEC) for detecting the memory configuration when booting a personalcomputer

.The Serial Presence Detect method, which was introduced with SDRAM technology, is an alternative to the previous Parallel Presence Dete

ct(PPD) method. SPD is implemented in a small EEPROM that contains accurate information about the memory latch, its memory capacity, supply voltage, addressing

, and about allowable frequency and timing parameters. In addition, the SPDcontains manufacturer data, codes

and part numbers. The motherboard 's Basic Input/Output System (BIOS) can read the SPD chip via the System Management Bus (SMBus).

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Englisch: serial presence detect - SPD
Updated at: 26.09.2006
#Words: 125
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Translations: DE