Rainbow Electronics LM81 - Manual (Page 11)

Functional Description
(Continued)
Interrupt source. In addition, the Configuration Register has
a control bit to enable or disable the hardware Interrupt.
Another hardware Interrupt line available T_CRIT_A (Critical
Temperature Alarm Output) is used to signal a catastrophic
overtemperature event. Having a dedicated interrupt for this
purpose allows for the fastest possible response time to a
thermal runaway event. This output can be enabled by set-
ting bit 4 of Extended Mode Register 1.
The Chassis Intrusion input is designed to accept an active
high signal from an external circuit that latches when the
case is removed from the computer.
2.0 INTERFACE
DS100072-7
FIGURE 4. LM81 Register Structure
LM81
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