ADM1024 View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
ADM1024 Datasheet PDF : 32 Pages
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ADM1024
Bit Name
0 START
1 INT_Enable
2 THERM
Enable
3 INT_Clear
4 RESET
5 Reserved
6 THERM CLR
7 Initialization
Table IX. Register 40h, Configuration Register 1 (Power-On Default = 08h)
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
Logic 1 enables startup of ADM1024; Logic 0 places it in standby mode. Caution: The outputs of
the interrupt pins will not be cleared if the user writes a 0 to this location after an interrupt has
occurred (see “INT Clear” bit). At startup, limit checking functions and scanning begins. Note,
all high and low limits should be set into the ADM1024 prior to turning on this bit (Power-On
Default = 0).
Logic 1 enables the INT_output. 1 = Enabled 0 = Disabled (Power-On Default = 0).
0 = THERM disabled
1 = THERM enabled
During Interrupt Service Routine (ISR), this bit is asserted Logic 1 to clear INT output without
affecting the contents of the Interrupt Status Register. The device will stop monitoring. It will
resume upon clearing of this bit. (Power-On Default = 0)
Setting this bit generates a low going 45 ms reset pulse at Pin 12. This bit is self-clearing and
power-on default is 0.
Default = 0
A 1 clears the THERM output without changing the Status Register contents.
Logic 1 restores power-on default values to the Configuration Register, Interrupt Status Registers,
Interrupt Mask Registers, Fan Divisor Register, and the Temperature Configuration Register. This
bit automatically clears itself since the power-on default is 0.
Table X. Register 41h, Interrupt Status Register 1 (Power-On Default = 00h)
Bit Name
R/W
Description
0 2.5 V/External Temp2 Error Read Only A 1 indicates that a High or Low limit has been exceeded.
1 VCCP1 Error
2 VCC Error
3 5 V Error
Read Only
Read Only
Read Only
A 1 indicates that a High or Low limit has been exceeded.
A 1 indicates that a High or Low limit has been exceeded.
A 1 indicates that a High or Low limit has been exceeded.
4 Internal Temp Error
Read Only A 1 indicates that a temperature interrupt has been set, or that a High or Low
limit has been exceeded.
5 External Temp1 Error
Read Only A 1 indicates that a temperature interrupt has been set, or that a High or Low
limit has been exceeded.
6 FAN1/AIN1 Error
Read Only A 1 indicates that a High or Low limit has been exceeded.
7 FAN2/AIN2 Error
Read Only A 1 indicates that a High or Low limit has been exceeded.
Table XI. Register 42h, Interrupt Status Register 2 (Power-On Default = 00h)
Bit Name
R/W
Description
0 12 V Error
1 VCCP2 Error
2 Reserved
3 Reserved
4 Chassis Error
5 THERM Interrupt
6 D1 Fault
7 D2 Fault
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
A 1 indicates a High or Low limit has been exceeded.
A 1 indicates a High or Low limit has been exceeded.
Undefined
Undefined
A 1 indicates Chassis Intrusion has gone high.
Indicates that THERM pin has been pulled low by an external source.
Short or Open-Circuit Sensor Diode D1
Short or Open-Circuit Sensor Diode D2
NOTES
1. Any time the Status Register is read out, the conditions (i.e., Register) that are read are automatically reset. In the case of the channel priority indication, if two or
more channels were out of limits, then another indication would automatically be generated if it was not handled during the ISR.
2. In the Mask Register, the errant voltage interrupt may be disabled until the operator has time to clear the errant condition or set the limit higher/lower.
–26–
REV. B
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