W83783S Information Storage Devices, Inc, W83783S Datasheet - Page 22

• Manufacturer Part Number: W83783S
• Description: H/w Monitor: 3 Temp.(thermal Diode), 6 Vol., 2 PWM Fan Control
• Manufacturer: Information Storage Devices, Inc

6.5.1 The W83783S temperature sensor 2 SMI# interrupt has two modes:
(2) Two-Times Interrupt Mode
(1) Comparator Interrupt Mode
Setting the T
the Comparator Interrupt Mode. Temperature exceeds T
interrupt and this interrupt will be reset by reading all the Interrupt Status Register. Once an
interrupt event has occurred by exceeding T
T
has occurred by exceeding T
will continue to occur in this manner until the temperature goes below T
Setting the T
Mode. Temperature exceeding T
will also cause an interrupt if the previous interrupt has been reset by reading all the interrupt
Status Register. Once an interrupt event has occurred by exceeding T
temperature remains above the T
T
127'C
SMI#
HYST
O
T
OI
Figure 15-1. Comparator Interrupt Mode
, the interrupt will occur again when the next conversion has completed. If an interrupt event
HYST
HYST
(Temperature Hysteresis) limit to 127øC will set temperature sensor 1 SMI# to
*
lower than T
*
*
O
O
and not reset, the interrupts will not occur again. The interrupts
O
will set temperature sensor 1 SMI# to the Two-Times Interrupt
HYST
*Interrupt Reset when Interrupt Status Registers are read
causes an interrupt and then temperature going below T
, the interrupt will not occur. (Figure 15-2 )
- 17 -
*
O
, then reset, if the temperature remains above the
SMI#
T
T
HYST
OI
O
(Over Temperature) Limit causes an
Figure 15-2. Two-Times Interrupt Mode
Publication Release Date: April 1999
*
O
. (Figure 15-1 )
O
, then reset, if the
W83783S
Preliminary
Revision 0.55
*
HYST
*