as99127f pwm registers

MBM Support mbm at livewiredev.com
Wed Jul 23 22:06:10 CEST 2003


hi all,

I had some mail problems the last 2 days so now have 5 or 6 mails on the
asus sensor chip.

the AS99127F has only 3 temp sensors, the ASB100 has 4 and the Mozart has
only 2, so I think your detection is wrong and you think your reading a 127F
while it's a ASB100.

So I will just include what I know and what works perfect for all mbm user
so far:

- before all detections I do:  IOByte($4E,$00,IOWrite);  so set any bank
there might be to 00

AS99127F_1 & AS99127F_2 & ASB100:
- scan smbus between $29 and $2F
- if register $58 holds $31 then we have an asus (either ASB100 or AS99127F)
- if (IOByte($4F,$0,IORead)=$94) or (IOByte($4F,$0,IORead)=$06) then ASB100
- if (IOByte($4F,$0,IORead)=$12) or (IOByte($4F,$0,IORead)=$C3) then
AS99127F_1
- if (IOByte($4F,$0,IORead)=$5C) or (IOByte($4F,$0,IORead)=$A3) then
AS99127F_2

Mozart2:
- scan smbus on $77
- if register $58 holds $56 or $10 then we are talking Mozart2
- of the mozart there are 3 types:
- //Asus ASM58 Mozart-2            $58=$56 $4E=$94 $4F=$36
- //Asus AS2K129R Mozart-2         $58=$56 $4E=$94 $4F=$06
- //Asus XXXXXXXX Mozart-2         $58=$10 $4E=$5C $4F=$A3
- you can handle all 3 the exact same way!!!!!

so that is detection, next temp sensors:

ASB100:
- no diode selection option like the winbonds have
- sensor 1: offset $27 of the sensor chip
- sensor 2 & 3 are the 2 LM75's on the smbus
- sensor 4: offset $17 of the sensor chip
- remark: I noticed that on intel boards sensor 2 is used for the cpu and 4
is ignored/stuck, on amd boards sensor 4 is the cpu and sensor 2 is either
ignored or a socket temp

AS99127F_1 & AS99127F_2:
- no diode selection option like the winbonds have
- they have both are the same temperature wise
- sensor 1: offset $27 of the sensor chip
- sensor 2 & 3 are the 2 LM75's on the smbus

Mozart2:
- no diode selection option like the winbonds have
- sensor 1: offset $27 of the sensor chip
- sensor 2: offset $13 of the sensor chip

then we get the fan sensors:

ASB100:
- 3 fans, identical to the W83781D

AS99127F_1 & AS99127F_2:
- 3 fans, identical to the W83781D

Mozart2:
- 2 fans:
- fan 1: offset $28,  divisor on $A1,  divisor mask $30,  shr 4,  1350000 /
rpm / div
- fan 2: offset $29,  divisor on $A1,  divisor mask $C0,  shr 6,  1350000 /
rpm / div

and finally the voltages, this is where there is a diffrence between the 2
AS99127F versions:

ASB100:
V0V1=$20*0.016
V0V2=$21*0.016
V0V3=$22*0.016
V0V4=$23*0.016*1.68
V0V5=$24*0.016*3.8
V0V6=($25*(-0.016))*3.97
V0V7=($26*(-0.016))*1.666

AS99127F_1:
V0=AS99127F Standard 1
V0V1=$20*0.016
V0V2=$21*0.016
V0V3=$22*0.016
V0V4=$23*0.016*1.68
V0V5=$24*0.016*3.8
V0V6=($25*(-0.016))*3.97
V0V7=($26*(-0.016))*1.503

AS99127F_2:
V1=AS99127F Standard 2
V1V1=$20*0.016
V1V2=$21*0.016
V1V3=$22*0.016
V1V4=$23*0.016*1.68
V1V5=$24*0.016*3.8
V1V6=(($25*0.016)-3.6)*5.14+3.6
V1V7=(($26*0.016)-3.6)*3.14+3.6

Mozart2:
V0=Mozart2 Standard
V0V1=$20*0.016
V0V2=255
V0V3=$22*0.016
V0V4=$23*0.016*1.68
V0V5=$24*0.016*4
V0V6=255
V0V7=255

I have send a lot of info in the last month to lm_sensor users, so it's not
always clear to me who is asking this for lm_sensor or for himselves.  so if
possible maybe post this somewhere on your site/forum/anything so I can
direct requests from lm_sensor users to it.

The Asus boards are the most populair so I can say for 99.999% that the
above is correct, there "might" be a diode selection possible but never used
by Asus so far.  and believe me, if it's wrong people know my e-mail adres
very well ;)

please let me know if this was usefull and if you posted it so I have the
url :)

if you have more questions feel free to ask


Regards, Alex

- Please always attach all previous mails !
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