Dual Channel 1°C Temperature Sensor with Beta Compensation and 1.8V SMBus Communications
Datasheet
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 6 - RUN / STOP - Controls Active/Standby modes.
‘0’ (default) - The device is in Active mode and converting on all channels.
‘1’ - The device is in Standby mode and not converting.
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 - RECD - Disables the Resistance Error Correction (REC) for the External Diode.
‘0’ (default) - REC is enabled for the External Diode.
‘1’ - REC is disabled for the External Diode.
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.
‘0’ (default) - The dynamic averaging feature is enabled. All temperature channels will be converted
with an averaging factor that is based on the conversion rate as shown in Table 6.6.
‘1’ - The dynamic averaging feature is disabled. All temperature channels will be converted with a
maximum averaging factor of 1x (equivalent to 11-bit conversion). For higher conversion rates, this
averaging factor will be reduced as shown in Table 6.6.
6.5
Conversion Rate Register 04h / 0Ah
Table 6.5 Conversion Rate Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
04h
0Ah
Conversion
Rate
06h
(4/sec)
R/W
-
-
-
-
CONV[3:0]
The Conversion Rate Register controls how often the temperature measurement channels are updated
and compared against the limits. This register is fully accessible at either address.
Bits 3-0 - CONV[3:0] - Determines the conversion rate as shown in Table 6.6.
SMSC EMC1182
29
Revision 1.0 (07-11-13)
DATASHEET
SMSC [ SMSC CORPORATION ]
