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Intel IA-32 User Manual

Page 524

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13-14 Vol. 3A

POWER AND THERMAL MANAGEMENT

THERMTRIP# Interrupt Enable (bit 2, R/W) — When a catastrophic cooling failure
occurs, the processor will automatically shutdown. Bit 2 = 0 disables the feature; bit 2 = 1
enables the feature.

FORCPR# Interrupt Enable (bit 3, R/W) — When a source external to the processor
asserts PROCHOT#, the processor will throttle. Bit 3 = 0 disables the feature; bit 3 = 1
enables the feature.

Overheat Interrupt Enable (bit 4, R/W) — Enables the generation of an interrupt when
an overheat temperature [>Tj(Max)] is reached. Bit 4 = 0 disables the feature; bit 4 = 1
enables the feature.

Threshold #1 Value (bits 14:8, R/W) — A temperature relative to Tj(Max) used to
generate an interrupt when the Threshold #1 Interrupt Enable bit is set and the actual
relative temperature reaches or crosses this value.

Threshold #1 Interrupt Enable (bit 15, R/W) — Enables the generation of an interrupt
when the actual temperature relative to Tj(Max) reaches the value specified in Threshold
#1 value. Bit 15 = 0 disables the feature; bit 15 = 1 enables the feature.

Threshold #2 Value (bits 22:16, R/W) — A temperature relative to Tj(Max) used to
generate an interrupt when the Threshold #2 Interrupt Enable bit is set and the actual
relative temperature reaches or crosses this value.

Threshold #2 Interrupt Enable (bit 23, R/W) — Enables the generation of an interrupt
when the actual temperature relative to Tj(Max) reaches the value specified in Threshold
#2 value. Bit 23 = 0 disables the feature; bit 23 = 1 enables the feature.