EMC1183 Datasheet, PDF (29/48 Pages) SMSC Corporation – Triple Channel 1°C Temperature Sensor

Triple Channel 1°C Temperature Sensor with Beta Compensation and 1.8V SMBus Communications
Datasheet
6.4
Bit 3 - LOW - This bit is set when any of the temperature channels drops below its programmed low
limit. See the Low Limit Status Register for specific channel information (Section 6.16). When set, this
bit will assert the ALERT / THERM2 pin.
Bit 2 - FAULT - This bit is asserted when a diode fault is detected on any of the external diode
channels. See the External Diode Fault Register for specific channel information (Section 6.10). When
set, this bit will assert the ALERT / THERM2 pin.
Bit 1 - THERM - This bit is set when the any of the temperature channels exceeds its programmed
Therm Limit. See the Therm Limit Status Register for specific channel information (Section 6.17).
When set, this bit will assert the THERM pin.
Configuration Register 03h / 09h
ADDR R/W
REGISTER
B7
03h
09h
R/W
Configuration
MASK_
ALL
Table 6.4 Configuration Register
B6
B5
B4
B3
B2
B1
B0
DEFAULT
-
ALERT/ RECD1
THERM2
RECD2
RANGE
DAVG_
DIS
APDD
00h
The Configuration Register controls the basic operation of the device. This register is fully accessible
at either address.
Bit 7 - MASK_ALL - Masks the ALERT / THERM2 pin from asserting.
 ‘0’ - (default) - The ALERT / THERM2 pin is not masked. If any of the appropriate status bits are
set the ALERT / THERM2 pin will be asserted.
 ‘1’ - The ALERT/ THERM2 pin is masked. It will not be asserted for any interrupt condition unless
it is configured in comparator mode. The Status Registers will be updated normally.
Bit 5 - ALERT/THERM2 - Controls the operation of the ALERT / THERM2 pin.
 ‘0’ (default) - The ALERT / THERM2 acts as an Alert pin and has interrupt behavior as described
in Section 5.5.1.
 ‘1’ - The ALERT / THERM2 acts as a THERM pin and has comparator behavior as described in
Section 5.5.2. In this mode the MASK_ALL bit is ignored.
Bit 4 - RECD1 - Disables the Resistance Error Correction (REC) for External Diode 1.
 ‘0’ (default) - REC is enabled for External Diode 1.
 ‘1’ - REC is disabled for External Diode 1.
Bit 3 - RECD2 - Disables the Resistance Error Correction (REC) for External Diode 2 and External
Diode 3.
 ‘0’ (default) - REC is enabled for External Diode 2 and External Diode 3.
 ‘1’ - REC is disabled for External Diode 2 and External Diode 3.
Bit 2 - RANGE - Configures the measurement range and data format of the temperature channels.
 ‘0’ (default) - The temperature measurement range is 0°C to +127.875°C and the data format is
binary.
 ‘1’ -The temperature measurement range is -64°C to +191.875°C and the data format is offset
binary (see Table 5.2).
Bit 1 - DAVG_DIS - Disables the dynamic averaging feature on all temperature channels.
SMSC EMC1183
29
DATASHEET
Revision 1.0 (07-11-13)