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From: Rudolf Marek <r.marek@assembler.cz>
To: lm-sensors@vger.kernel.org
Subject: Re: [lm-sensors] About the Asus F2A85 temperature sensor (it8603e)
Date: Thu, 07 Nov 2013 23:35:26 +0000	[thread overview]
Message-ID: <527C23BE.9030308@assembler.cz> (raw)

>

> P.S. I have reason to believe that the it87 device we are talking about is
> actually an emulation running on an 8051 co-processor, specifically the EC
> (Embedded Controller) in the AMD A85 Hudson chipset. The it87 emulation is
> poorly written in the 8051 code and can result in unexpected effects -- bugs.
> I have specifically seen the sensor stop updating (as if it just stopped
> sampling values).

No, the chip is real, just look to the corner near audio connectors ;) The chip 
is derivate of IT8728 it seems. It has lower pin count and lower number of 
features. There are just two input temperatures and 3 fan inputs/pwms. Voltages 
are all there. It looks like the voltages have fixed functions for inputs 
because they are also used in the voltage under/over voltage protections.

I'm tempted to treat this chip as IT8728F. Does anyone have a datasheet of IT8728F?

Thanks
Rudolf

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             reply	other threads:[~2013-11-07 23:35 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-11-07 23:35 Rudolf Marek [this message]
2013-11-07 23:49 ` [lm-sensors] About the Asus F2A85 temperature sensor (it8603e) David Hubbard
2013-11-08  0:07 ` Rudolf Marek

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