IT8705F Data Sheet and Help
Mark D. Studebaker
mds at paradyne.com
Wed Oct 31 03:19:35 CET 2001
Vref is known so I backed into some formulas based on the 2V
nominal value in the datasheet.
I put the formulas in sensors.conf.eg in CVS.
Also, for the temp, try changing the sensor type,
"Mark D. Studebaker" wrote:
> ITE http://www.ite.com.tw
> See figure 10-4 and the following formulas in the 8705 and 8712
> The 8705 datasheet I have has the wrong formula, the 8712 is right.
> You need to know Rin, Rf, and Vref to compute the correct formula.
> Unfortunately, since the datasheet doesn't give the board designer a
> recommendation, you will have to find and measure the values on
> your board.
> I'll put the formulas in sensors.conf.eg so others can find it.
> Kris Kersey wrote:
> > Guys,
> > Could you help me get the math right on several of the IT8705F
> > sensors? The readout of my sensors is below. There are definate problems
> > with -12V, -5V, and Temp2/CPU. It also seems that the Vcore 1 could be
> > slightly off. On my motherboard (SOYO K7V DRAGON Plus!) I also wanted
> > note that there was no need to compute in2. Finally, in the headers,
> > there is an IN8 define and it doesn't appear that it should be
> > there. Help is appreciated but a link to the datasheet would also be nice
> > if you don't have the time.
> > it87-isa-0290
> > Adapter: ISA adapter
> > Algorithm: ISA algorithm
> > VCore 1: +1.85 V (min = +1.66 V, max = +1.82 V) ALARM
> > VCore 2: +2.48 V (min = +2.40 V, max = +2.60 V)
> > +3.3V: +3.31 V (min = +3.13 V, max = +3.45 V)
> > +5V: +5.02 V (min = +4.72 V, max = +5.24 V)
> > +12V: +12.00 V (min = +11.36 V, max = +12.60 V)
> > -12V: -7.34 V (min = -11.38 V, max = -12.53 V) ALARM
> > -5V: -6.61 V (min = -4.70 V, max = -5.15 V) ALARM
> > Stdby: +4.99 V (min = +4.72 V, max = +5.24 V)
> > fan1: 0 RPM (min = 0 RPM, div = 2)
> > fan2: 5818 RPM (min = 3000 RPM, div = 2)
> > Temp1/MB: +40C (min = +20C, max = +40C)
> > Temp2/CPU: +114C (min = +25C, max = +45C)
> > I used the latest sensors.conf.eg from CVS for above. Note the changes
> > mentioned.
> > Thanks,
> > Kris Kersey
> > LinuxHardware.org Site Manager
> > augustus at linuxhardware.org
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