Datasheet

LM96080
www.ti.com SNAS465D –SEPTEMBER 2009–REVISED MARCH 2013
Interrupt Status Register 2—Address 02h
Power on default <7:0> = 0000 0000 binary
Bit Name Read/Write Description
0 Hot Temperature Read Only A one indicates a High or Low limit has been exceeded. Only “One-Time Interrupt” and
“Default Interrupt” modes are supported (see Temperature Interrupts and Interrupt Outputs).
The mode is set by bit-6 of the Interrupt Mask Register 2 (address 04h).
1 BTI Read Only A one indicates that an interrupt has occurred from the Board Temperature Interrupt (BTI)
input pin. BTI can be tied to the OS output of multiple LM75 chips.
2 FAN1 Read Only A one indicates that a fan count limit has been exceeded.
3 FAN2 Read Only A one indicates that a fan count limit has been exceeded.
4 GPI (Chassis Read Only A one indicates GPI (Chassis Intrusion) has gone high.
Intrusion)
5 OS bit Read Only A one indicates a High or a Low OS Temperature limit has been exceed. Only “One-Time
Interrupt” and “Default Interrupt” modes are supported (see Temperature Interrupts and
Interrupt Outputs). The mode is set by bit 7 of the Interrupt Mask Register 2.
6 Reserved Read Only
7 Reserved Read Only
Interrupt Mask Register 1—Address 03h
Power on default <7:0> = 0000 0000 binary
Bit Name Read/Write Description
0 IN0 Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
1 IN1 Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
2 IN2 Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
3 IN3 Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
4 IN4 Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
5 IN5 Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
6 IN6 Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
7 INT_IN Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
Interrupt Mask Register 2—Address 04h
Power on default <7:0> = 0000 0000 binary
Bit Name Read/Write Description
0 Hot Temperature Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
1 BTI Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
2 FAN1 Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
3 FAN2 Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
4 GPI (Chassis Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
Intrusion)
5 OS bit Read/Write A one disables the corresponding interrupt status bit for INT interrupt.
6 Hot Temperature Read/Write
A zero selects the default interrupt mode which gives the user an interrupt if the temperature
Interrupt Mode
goes above the hot limit. The interrupt will be cleared once the status register is read, but it will
Select
again be generated when the next conversion has completed. It will continue to do so until the
temperature goes below the hysteresis limit.
A one selects the one time interrupt mode which only gives the user one interrupt when it goes
above the hot limit. The interrupt will be cleared once the status register is read. Another interrupt
will not be generated until the temperature goes below the hysteresis limit. It will also be cleared
if the status register is read. No more interrupts will be generated until the temperature goes
above the hot limit again. The corresponding bit will be cleared in the status register every time it
is read but may not set again when the next conversion is done. (Refer to Figure 21).
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