1°C Multiple Temperature Sensor with HW Thermal Shutdown & Hottest of Thermal Zones
Datasheet
The Channel Configuration Register determines which external diode channels are active in the device.
Bit 7 - REM_HOT - Enables circuitry that will remember the last temperature channel that was
determined to be the Hottest and flag an error if the hottest temperature channel changes.
‘0’ (default) - The HOTTEST status bit will not be asserted if the hottest temperature channel
changes.
‘1’ - If the hottest temperature channel changes, then the HOTTEST status bit will be asserted.
Bit 2 - EXT4_APD - Enables the DP4 / DN5 and DN4 / DP5 pins to support two anti-parallel diode
connections versus a single diode connection.
‘0’ (default) - The DP4 / DN5 and DN4 / DP5 pins do not support two anti-parallel diode
connections. The pins will only monitor a single external diode (External Diode 4).
‘1’ - The DP4 / DN5 and DN4 / DP5 pins support two anti-parallel diode connections (External
Diode 4 and External Diode 5).
Bit 1 - EXT2_APD- Enables the DP2 / DN3 and DN2 / DP3 pins to support two anti-parallel diode
connections versus a single diode connection.
‘0’ (default) - The DP2 / DN3 and DN2 / DP3 pins do not support two anti-parallel diode
connections. The pins will only monitor a single external diode (External Diode 2).
‘1’ - The DP2 / DN3 and DN2 / DP3 pins support two anti-parallel diode connections (External
Diode 2 and External Diode 3).
Bit 0 - EXT1_APD (EMC1047 only)- Enables the DP1 / DN6 and DN1 / DP6 pins to support two anti-
parallel diode connections versus a single diode connection.
‘0’ (default) - The DP1 / DN6 and DN1 / DP6 pins do not support two anti-parallel diode
connections. The pins will only monitor a single external diode (External Diode 1).
‘1’ - The DP1 / DN6 and DN1 / DP6 pins support two anti-parallel diode connections (External
Diode 1 and External Diode 6.
5.18 Filter Control Register
Table 5.23 Filter Control Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
40h
R/W
Filter Control
-
AVG6 AVG5 AVG4
_EN _EN _EN
AVG
3_EN
AVG2
_EN
AVG
1_EN
-
00h
The Filter Configuration Register controls the digital filter on the external diode channels.
Bits 6 - 0 - AVGx_EN- Control the digital averaging that is applied to the External Diode X temperature
measurements.
‘0’ (default) - Digital Averaging is disabled.
‘1’ - Digital averaging is enabled as a 4x running average for the External Diode X channel.
Revision 0.62 (03-05-08)
SMSC EMC1046/EMC1047
DATA3S4HEET
SMSC [ SMSC CORPORATION ]
