W83791D Datasheet, PDF (35/46 Pages) Winbond – W83791D Winbond H/W Monitoring IC

W83791D
Preliminary
TOI
TOI
THYST
THYST
SMI#
*
*
SMI#
*
*
*
*
*Interrupt Reset when Interrupt Status Registers are read
*
*
Figure 12-3. Comparator Interrupt Mode
T_OI
Figure 12-4. Two-Times Interrupt Mode
T_HYST
SMI#
*
*
*Interrupt Reset when Interrupt Status Registers are read
Figure 12-5. One-Time Interrupt Mode
Note. The IRQ interrupt action like SMI# , but the IRQ is level signal.
6.8.6
Over-Temperature (OVT#) for W83791D temperature sensor 1/2/3
(1) Comparator Mode:
Temperature exceeding T_O causes the OVT# output activated until the temperature is less than T_HYST. (Figure
13)
(2) Interrupt Mode:
Temperature exceeding T_O causes the OVT# output activated indefinitely until reset by reading temperature
sensor 1 or sensor 2 or sensor 3 registers. Temperature exceeding T_O, then OVT# reset, and then temperature going
below T_HYST will also cause the OVT# activated indefinitely until reset by reading temperature sensor 1 or sensor 2
or sensor 3 registers. Once the OVT# is activated by exceeding T_O, then reset, if the temperature remains above
T_HYST, the OVT# will not be activated again.( Figure 13)
(3) ACPI Mode
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Publication Release Date: Aug, 2001
Revision 0.41