W83792AG Nuvoton Technology Corporation of America, W83792AG Datasheet - Page 47

• Manufacturer Part Number: W83792AG
• Description: IC MONITOR H/W 48-LQFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83792AG

• Output Type: I²C™
• Function: Hardware Monitor
• Topology: ADC, Fan Control, Register Bank
• Sensor Type: External
• Sensing Temperature: External Sensor
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Temperature Sensor Function: Temp Sensor
• Resolution: 10b
• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8.15 SMI#/OVT# Property Select -- Index 4Ch (Bank 0)
Reset Condition: Resume Reset.
Register 4Ch selects SMI modes, OVT modes, OVT sources and OVT polarity.
If OVT_MD selects ACPI mode, register 5Eh determines the temperature interval between each OVT
is issued. Default sets to 5, that is, every time temperature reaches 5*n degree, an OVT will be issued.
IRQ/OVT Polarity
BIT
7-6
ACPI Difference
MNEMONIC
TEMP_SMI_MD
[1:0]
NAME
BANK INDEX ATTR
0
0
4C
5E
R/W
ATTRIBUTE
RW
RW
0(Comp Interrupt) 0(Comparator)
reserve
TEMP_SMI_MD
BIT 7
0
Temperature SMI# Mode Select.
<00> - Comparator Interrupt Mode:(Default)
limit causes and interrupt and this interrupt will be reset by
reading all the Interrupt Status.
<01> - Two Time Interrupt Mode:
mode with hysteresis type. Temperature exceeding T
causes an interrupt and then temperature going below
T
has been reset by reading all the interrupt Status
Register. Once an interrupt event has occurred by
exceeding T
above the T
<10> - One Time Interrupt Mode:
mode with hysteresis type. Temperature exceeding T
(Over-temperature, defined in Bank 1/2) causes an
interrupt and then temperature going below T
(Hysteresis temperature, defined in Bank 1/2) will not
cause an interrupt. Once an interrupt event has occurred
by exceeding T
will not occur again until the temperature exceeding T
HYST
BIT 6
Temperature 1/2/3 exceeds T
This bit use in temperature sensor 1/2/3 interrupt
This bit use in temperature sensor 1/2/3 interrupt
will also cause an interrupt if the previous interrupt
- 41 -
BIT 5
OVT_MD
HYST
O
DIFFREG (ACPI Increment Difference)
, then reset, if the temperature remains
.
O
BIT 4
, then going below T
DESCRIPTION
Publication Release Date: April 26, 2006
EN_OVT3 EN_OVT2 EN_OVT1 OVTPOL
W83792AD/AG/D/G
BIT 3
0
5
BIT 2
0
O
(Over-temperature)
HYST
, and interrupt
BIT 1
0
Revision 0.9
BIT 0
O
HYST
.
1
O
O
,