Intel IA-32 - Manual (Page 522)

13-12 Vol. 3A
POWER AND THERMAL MANAGEMENT
been asserted since a previous RESET or the last time software cleared the bit. Software
may clear this bit by writing a zero.
•
PROCHOT# or FORCEPR# Event (bit 2, RO) — Indicates whether PROCHOT# or
FORCEPR# is being asserted. If bit 2 = 1, PROCHOT# or FORCEPR# has been asserted.
•
PROCHOT# or FORCEPR# Log (bit3, R/WC0) — Sticky bit that indicates whether
PROCHOT# or FORCEPR# has been asserted since the last clearing of this bit or a reset.
If bit 3 = 1, PROCHOT# or FORCEPR# has been asserted. Software may clear this bit by
writing a zero.
•
Out-Of-Spec Status (bit 4, RO) — Indicates whether the overheat detector output signal
is currently active. If bit 4 = 1, the overheat detector output signal is currently active.
•
Out-Of-Spec Status Log (bit 5, R/WC0) — Sticky bit that indicates whether the overheat
detector output signal has been asserted since the last clearing of this bit or reset. If
bit 5 = 1, the output signal has been asserted. Software may clear this bit by writing a zero.
•
Thermal Threshold #1 Status (bit 6, RO) — Indicates whether the actual temperature is
currently higher than the value set in Thermal Threshold #1. If bit 6 = 0, the actual
temperature is lower. If bit 6 = 0, the actual temperature is greater than or equal to TT#1.
•
Thermal Threshold #1 Log (bit 7, R/WC0) — Sticky bit that indicates whether the
Thermal Threshold #1 has been reached since the last clearing of this bit or a reset. If
bit 7 = 1, the Threshold #1 has been reached. Software may clear this bit by writing a zero.
•
Thermal Threshold #2 Status (bit 8, RO) — Indicates whether actual temperature is
currently higher than the value set in Thermal Threshold #2. If bit 8 = 0, the actual
temperature is lower. If bit 8 = 0, the actual temperature is greater than or equal to TT#2.
Figure 13-8. IA32_THERM_STATUS Register
63 0
Reserved
15
Reading Valid
1 2 3 4 5 8 10 16 22 23 27
Resolution in Deg. Celsius
Digital Readout
Thermal Threshold #2 Log
Thermal Threshold #2 Status
Thermal Threshold #1 Log
Thermal Threshold #1 Status
Out of Spec Status Log
6 7 9 31 32
Out of Spec Status
PROCHOT# or FORCEPR# Log
PROCHOT# or FORCEPR# Event
Thermal Status Log
Thermal Status