W83697HFFDC Information Storage Devices, Inc, W83697HFFDC Datasheet - Page 103

• Manufacturer Part Number: W83697HFFDC
• Description: LPC Interface I/o Plus Game/midi Port, Fan Control, Flash ROM I/f
• Manufacturer: Information Storage Devices, Inc

9.6 OVT# interrupt mode
The OVT# signal is only related with temperature sensor 2.
9.6.1
modes
(1) Comparator Mode(Default):
(2) Interrupt Mode:
Temperature sensor 2 and 3 Over-Temperature output (OVT#) in ACPI mode
The priority of this mode is higher than Comparator mode and Interrupt mode .
Setting Bank1/2 CR[52h] bit 2 to 0 will set OVT# signal to comparator mode. Temperature
exceeding T
9.12)
Setting Bank1/2 CR[52h] bit 2 to 1 will set OVT# signal to interrupt mode. Setting Temperature
exceeding T
sensor 2 or sensor 3 registers. Temperature exceeding T
going below T
sensor2 or sensor 3 registers. Once the OVT# is activated by exceeding T
temperature remains above T
Setting CR[4Ch] bit 1 to 1 will set OVT# signal to ACPI mode. At this mode, temperature exceeding
one level of temperature separation, starting from 0 degree, causes the OVT# output activated.
OVT# will be activated again once temperature exceeding the next level. OVT# output will act the
same manner when temperature goes down.
current level, the OVT# will not act.(Refer the arrow in the figure). The granularity of temperature
separation between each OVT# output signal can be programmed at Bank0 CR[5Fh].
The W83697HF temperature sensor 2 Over-Temperature (OVT#) has the following
O
O
HYST
causes the OVT# output activated until the temperature is less than T
causes the OVT# output activated indefinitely until reset by reading temperature
will also cause the OVT# activated indefinitely until reset by reading temperature
HYST
, the OVT# will not be activated again.( Figure 9.12)
- 94 -
(Figure 17,18). If temperature goes around the
O
, then OVT# reset, and then temperature
Publication Release Date: Feb. 2002
W83697HF/F
O
, then reset, if the
HYST
Revision 0.70
. ( Figure