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ADM1024ARUZ Datasheet(PDF) 20 Page - ON Semiconductor

Part No. ADM1024ARUZ
Description  System Hardware Monitor with Remote Diode Thermal Sensing
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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ADM1024ARUZ Datasheet(HTML) 20 Page - ON Semiconductor

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ADM1024
http://onsemi.com
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Figure 32. Interrupt Register Structure
INT
16 MASK BITS
VALUE
4
5
6
7
VID4/IRQ4
6
7
THERM
THERM
VID0–VID4
REGISTERS
CHANNEL
MODE
REGISTER
CONFIGURATION
REGISTER 2
FROM
VALUE
AND LIMIT
REGISTERS
HIGH
LIMIT
1 = OUT
INT. TEMP
EXT. TEMP1
FAN1/AIN1
FAN2/AIN2
RESERVED
RESERVED
CI
D1 FAULT
D2 FAULT
2.5V/EXT.
TEMP 2
VCCP1
VCC
+5.0VIN
+12VIN
VCCP2
MASKING
DATA
FROM BUS
INTERRUPT MASK
REGISTERS 1 AND 2
(SAME BIT ORDER AS
STATUS REGISTERS)
MASK GATING y 11
STATUS
BIT
MASK
BIT
INT_ENABLE
INT_CLEAR
CONFIGURATION
REGISTER 1
THERM
CLEAR
THERM
0
1
2
3
4
5
6
7
INTERRUPT
STATUS
REGISTER 2
0
1
2
3
4
5
6
7
INTERRUPT
STATUS
REGISTER 1
LOW
LIMIT
OF
LIMIT
VID2/IRQ2
VID3/IRQ3
VID0/IRQ0
VID1/IRQ1
Temperature Interrupt Modes
The ADM1024 has two distinct methods of producing
interrupts for out−of−limit temperature measurements from
the internal or external sensors. Temperature errors can
generate an interrupt on the INT pin along with other
interrupts, but there is also a separate THERM pin that
generates an interrupt only for temperature errors.
Operation of the INT output for temperature interrupts is
illustrated in Figure 33 Assuming that the temperature starts
off within the programmed limits and that temperature
interrupt sources are not masked, INT will go low if the
temperature measured by any of the internal or external
sensors exceeds the programmed high temperature limit for
that sensor, or the hardware limits in register 13h, 14h, 17h,
or 18h.
Figure 33. Operation of INT for Temperature
Interrupts
TEMP
HIGH LIMIT
LOW LIMIT
INT
1
1
1
1
1
1
1005C
905C
805C
705C
605C
505C
405C
ACPI
CONTROL METHODS
CLEAR EVENT
1ACPI AND DEFAULT CONTROL METHODS
ADJUST TEMPERATURE LIMIT VALUES.


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