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NetBSD 6.1.5 - man page for amdtemp (netbsd section 4)

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AMDTEMP(4)			   BSD Kernel Interfaces Manual 		       AMDTEMP(4)

     amdtemp -- AMD CPU on-die digital thermal sensor

     amdtemp* at pchb?

     The amdtemp driver provides support for the on-die digital thermal sensor present on AMD K8,
     AMD Barcelona, AMD Phenom, AMD Griffin, and AMD Fusion CPUs.

     These sensors were officially introduced in AMD K8 Revision F processors, and provide 0.5
     degC accuracy.  Precision was improved in Revision G chips, which provide two more bits for
     0.25 degC steppings.  Each core has two temperature sensors, and there are up to two cores
     per CPU socket.

     AMD Barcelona, AMD Phenom, AMD Griffin, and AMD Fusion provide 0.125 degC accuracy and pro-
     vide one temperature sensor for each CPU socket.

     The amdtemp driver reports temperatures through the envsys(4) API.

	   Sensor	 Units	  Typical Use
	   CPUN sensor0  uK	  cpuN temperature

     envsys(4), envstat(8), powerd(8)

     The amdtemp driver first appeared in OpenBSD 4.4 named ``kate''.  It was then ported to
     NetBSD 5.0.  The driver has been renamed with support for newer AMD CPUs.

     The amdtemp driver was written by Constantine A. Murenin <cnst@openbsd.org> whilst at the
     University of Waterloo.  It was adapted to NetBSD by Christoph Egger.

BSD					  March 2, 2012 				      BSD
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