emc1413 Standard Microsystems Corp., emc1413 Datasheet - Page 40

• Manufacturer Part Number: emc1413
• Description: 1?c Temperature Sensor With Beta Compensation And Selectable Address
• Manufacturer: Standard Microsystems Corp.

ADDR.
37h
Revision 1.37 (12-23-09)
6.17
6.18
ADDR.
40h
R/W
R-C
REGISTER
The ALERT pin will be set if the programmed number of consecutive alert counts have been met and
any of these status bits are set.
The status bits will remain set until read unless the ALERT pin is configured as a comparator output
(see
Bit 3 - E3LOW - This bit is set when the External Diode 3 channel drops below its programmed low
limit.
Bit 2 - E2LOW - This bit is set when the External Diode 2 channel drops below its programmed low
limit.
Bit 1 - E1LOW - This bit is set when the External Diode 1 channel drops below its programmed low
limit.
Bit 0 - ILOW - This bit is set when the Internal Diode channel drops below its programmed low limit.
The THERM Limit Status Register contains the status bits that are set when a temperature channel
THERM Limit is exceeded. If any of these bits are set, then the THERM status bit in the Status Register
is set. Reading from the THERM Limit Status Register will not clear the status bits. Once the
temperature drops below the THERM Limit minus the THERM Hysteresis, the corresponding status
bits will be automatically cleared. The THERM bit in the Status Register will be cleared when all
individual channel THERM bits are cleared.
Bit 3 - E3THERM - This bit is set when the External Diode 3 channel exceeds it’s programmed THERM
Limit. When set, this bit will assert the THERM pin.
Bit 2 - E2THERM - This bit is set when the External Diode 2 channel exceeds it’s programmed THERM
Limit. When set, this bit will assert the THERM pin.
Bit 1 - E1THERM - This bit is set when the External Diode 1 channel exceeds it’s programmed THERM
limit. When set, this bit will assert the THERM pin.
Bit 0- ITHERM - This bit is set when the Internal Diode channel exceeds it’s programmed THERM limit.
When set, this bit will assert the THERM pin.
R/W
The Filter Configuration Register controls the digital filter on the External Diode 1 channel.
Bits 1-0 - FILTER[1:0] - Control the level of digital filtering that is applied to the External Diode
temperature measurements as shown in
Filter Step Response" and Figure 5.5, "Temperature Filter Impulse Response" for examples on the filter
behavior.
THERM Limit Status Register
Filter Control Register
R/W
THERM
Status
Limit
Section 5.3.2, "ALERT Pin Comparator
Filter Control
REGISTER
B7
-
Table 6.22 THERM Limit Status Register
Table 6.23 Filter Configuration Register
B6
-
B7
-
B5
-
DATASHEET
B6
-
1°C Temperature Sensor with Beta Compensation and Selectable Address
B4
-
Table 6.24, "Filter
40
B5
-
Mode").
THERM
-E3
B3
B4
-
B3
-
THERM
Settings". See Figure 5.4, "Temperature
B2
E2
B2
-
THERM
FILTER[1:0]
B1
B1
E1
SMSC EMC1413 / EMC1414
B0
ITHERM
B0
DEFAULT
Datasheet
00h
DEFAULT
00h