Intel E3845 FH8065301487715 Fiche De Données
Codes de produits
FH8065301487715
Thermal Management
Intel
®
Atom™ Processor E3800 Product Family
Datasheet
109
Note:
DTS encoding of 127 always represents T
J-MAX
.If T
J-MAX
is at 110
o
C instead of 90
o
C
then the encoding 127 from DTS indicates 110
o
C, 137 indicates 90
O
C and so forth.
Thermal trip points are of two types:
•
Hard Trip: The Catastrophic trip points generated by DTS’s based on predefined
temperature setting defined in fuses.
temperature setting defined in fuses.
•
Programmable Trips: four programmable trip settings (Hot, Aux2, Aux1, Aux0)
that can be set by firmware/software. Default value for Hot Trip is from Fuses.
that can be set by firmware/software. Default value for Hot Trip is from Fuses.
Note:
DTS accuracy is around 8
o
C under 60
o
C and around 6
o
C above 60
o
C.
8.3
SoC Programmable Trips
Programmable trips can be programmed to cause different actions when triggered to
reduce temperature of the die.
reduce temperature of the die.
8.3.1
Aux3 Trip
By default, the Aux 3 (Hot Trip) point is set by fuses but the software/firmware has an
option to set these to a different value.
option to set these to a different value.
This trip point is enabled by firmware to monitor and control the system temperature
while the rest of the system is being set up.
while the rest of the system is being set up.
8.3.2
Aux2, Aux1, Aux0 Trip
These are fully programmable trip points for general hardware protection mechanisms.
The programmable trips are only active after software/firmware enables the trip.
The programmable trips are only active after software/firmware enables the trip.
Note:
Unlike Aux3, the Aux[2:0] trip registers are defaulted to zero. To prevent spurious
results, software/firmware should program the trip values prior to enabling the trip
point.
results, software/firmware should program the trip values prior to enabling the trip
point.
177
40
ο
C
187
30
ο
C
197
20
ο
C
207
10
ο
C
Table 62. Temperature Reading Based on DTS (If T
J-MAX
=90
ο
C) (Sheet 2 of 2)
DTS Counter Value
Temperature Reading