1°C Multiple Temperature Sensor with Beta Compensation and Hottest of Thermal Zones
Datasheet
The Hottest Temperature Registers store the measured hottest temperature of all the selected external
diode channels (see Section 5.16). If no External diodes are selected then the High Byte Register will
read 80h. The data format is the same as the temperature channels.
5.12 Hottest Temperature Status Register
Table 5.17 Hottest Temperature Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
34h
R
Hottest
Temperature
Status
-
EXT6
EXT5
EXT4
EXT3
EXT2
EXT1
INT
00h
The Hottest Temperature Status Register flags which external diode temperature is hottest. If multiple
temperature channels measure the same temperature and are equal to the hottest temperature, then
hottest status will be based on the measurement order.
Bit 6 - EXT6 - The External Diode 6 channel is the hottest.
Bit 4 - EXT5 - The External Diode 5 channel is the hottest.
Bit 3 - EXT4 - The External Diode 4 channel is the hottest.
Bit 3 - EXT3 - The External Diode 3 channel is the hottest.
Bit 2 - EXT2 - The External Diode 2 channel is the hottest.
Bit 1 - EXT1 - The External Diode 1 channel is the hottest.
Bit 0 - INT - The Internal Diode channel is the hottest.
5.13 High Limit Status Register
Table 5.18 High Limit Status Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
35h
R-C
High Limit
Status
-
E6
HIGH
E5
HIGH
E4
HIGH
E3
HIGH
E2
HIGH
E1
HIGH
I
00h
HIGH
The High Limit Status Register contains the status bits that are set when a temperature channel high
limit is exceeded for a number of consecutive readings as set by the consecutive alert counts (see
Section 5.9). If any of these bits are set, then the HIGH status bit in the Status Register is set. Reading
from the High Limit Status Register will clear all bits if the error condition has been removed. Reading
from the register will also clear the HIGH status bit in the Status Register.
Bit 6 - E6HIGH - This bit is set when the External Diode 6 channel meets or exceeds its programmed
high limit.
Bit 5 - E5HIGH - This bit is set when the External Diode 5 channel meets or exceeds its programmed
high limit.
Bit 4 - E4HIGH - This bit is set when the External Diode 4 channel meets or exceeds its programmed
high limit.
Bit 3 - E3HIGH - This bit is set when the External Diode 3 channel meets or exceeds its programmed
high limit.
SMSC EMC1046/EMC1047
Revision 0.69 (06-29-09)
DATA3S1HEET
SMSC [ SMSC CORPORATION ]
