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New MiniITX Board


There are three data transfer speeds for the I2C bus: standard, fast-mode, and high-speed mode. Standard is 100 Kbps. Fast-mode is 400 Kbps, and high-speed mode supports speeds up to 3.4 Mbps. All are backward compatible. The I2C bus supports 7-bit and 10-bit address space devices and devices that operate under different voltages.



100kHz and 400kHz are *maximum* frequency for standard and high-speed

  • I2C* busses. What your VIA bridge really is is an SMBus, so it must run

at a speed between 10kHz and 100kHz if I remember correctly.

As a matter of fact, I already measured both my VIA and Intel SMBus chips at 16kHz, exactly like you. So I am not surprised at all by what you are reporting.

kernel patch UNTESTED: http://archives.andrew.net.au/lm-sensors/msg29186.html