Developer Manual/I2C: Difference between revisions
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=== Introduction === | === Introduction === | ||
SMBUS and I2C are closely related buses. The SPD (Serial Presence Detect) of the DIMM's are I2C devices that need to be read during RAM | SMBUS and I2C are closely related buses. The SPD (Serial Presence Detect) of the DIMM's are I2C devices that need to be read during [[Developer Manual/RAM init]]. | ||
For characterizing I2C on a unsupported motherboard I used the following tools: | For characterizing I2C on a unsupported motherboard I used the following tools: | ||
* sensors-detect (lm-sensors) | * sensors-detect (lm-sensors) | ||
* i2cdetect | * i2cdetect (i2c-tools) | ||
* i2cdump | * i2cdump (i2c-tools) | ||
Using this tools on a normal bios on the motherboard its easy to identify the appropriate address for the SPD data. | Using this tools on a normal bios on the motherboard its easy to identify the appropriate address for the SPD data. | ||
Latest revision as of 11:26, 11 April 2011
Introduction
SMBUS and I2C are closely related buses. The SPD (Serial Presence Detect) of the DIMM's are I2C devices that need to be read during Developer Manual/RAM init.
For characterizing I2C on a unsupported motherboard I used the following tools:
- sensors-detect (lm-sensors)
- i2cdetect (i2c-tools)
- i2cdump (i2c-tools)
Using this tools on a normal bios on the motherboard its easy to identify the appropriate address for the SPD data.