On Wed, Mar 14, 2012 at 05:36:59PM -0400, Christopher Head wrote: > Hi, > I'm trying to get my DH55HC's sensors working. Detection indicates > w83627dhg-isa-0a10 as the device. According to the wiki at > <http://lm-sensors.org/wiki/VoltageLabelsAndScaling>, this chip is > capable of reading 8 mV/LSb. Here's the problem: the division ratio > doesn't make sense! In the BIOS, I observed the following values on the > 12 V rail: > > 11.828 > 11.844 > 11.859 > > The difference between these values is 15 or 16 mV. But 12 V / 0.016 > V/LSb = 750 LSb! Since these sensor chips don't read raw values above > 255, how in the world am I getting 16 mV resolution on a 12 V input? > I'm seeing similar results on my 5 V rail, which returns values just 2 > mV apart in the BIOS, and on my so-called "Memory V_SM" rail (2 mV) and > "+Vccp" rail (differences as small as 1 mV being displayed). > > Any ideas? > The BIOS may get its voltages through HECI, which uses a different set of ADCs built into the H55 PCH. Guenter _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
