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VIAENV(4)		 BSD Kernel Interfaces Manual		     VIAENV(4)

NAME
     viaenv — VIA VT82C686A/VT8231 Hardware Monitor and Power Management Timer

SYNOPSIS
     viaenv* at pci? dev ? function ?

DESCRIPTION
     The viaenv is an envsys(4) compatible driver for the Hardware Monitor and
     the Power Management timer in the VIA VT82C686A and VT8231 South Bridges.

     The device has 10 sensors:

	   Sensor    Units    Typical Use
	   TSENS1    uK	      CPU temperature
	   TSENS2    uK	      System temperature
	   TSENS3    uK	      ?
	   FAN1	     RPM      CPU fan
	   FAN2	     RPM      System fan
	   VSENS1    uV DC    CPU core voltage (2.0V)
	   VSENS2    uV DC    North Bridge core voltage (2.5V)
	   Vcore     uV DC    Internal core voltage (3.3V)
	   VSENS3    uV DC    +5V
	   VSENS4    uV DC    +12V

     Sensor data is updated every 1.5 seconds.

SEE ALSO
     envsys(4), envstat(8)

HISTORY
     The viaenv device appeared in NetBSD 1.5.

BUGS
     Interrupt support is unimplemented, as is support for setting values.

BSD			       January 20, 2007				   BSD

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