1°C Multiple Temperature Sensor with Beta Compensation and Hottest of Thermal Zones
Datasheet
‘0’ (default) - REC is enabled.
‘1’ - REC is disabled.
5.16 Hottest Configuration Register
Table 5.21 Hottest Configuration Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
3Ah
R/W
Hottest
Config
-
E6HOT
E5HOT
E4HOT
E3HOT
E2HOT
E1HOT
IHOT
00h
The Hottest Configuration Register determines which External Diode Channels (if any) are compared
during the “Hottest Of” comparison that is automatically performed at the end of every conversion
cycle.
Bits 6 - 0 - ExHOT - Controls whether the External Diode X temperature data is compared during the
“Hottest Of” comparison.
‘0’ (default) - The External Diode X channel is not compared during the “Hottest Of” Comparison.
‘1’ - The External Diode X channel temperature data is compared to all other indicated channels
during the “Hottest Of” Comparison.
Bit 0 - IHOT - Controls whether the Internal Diode temperature data is compared during the “Hottest
Of” comparison.
‘0’ (default) - The Internal Diode channel is not compared during the “Hottest Of” Comparison.
‘1’ - The Internal Diode channel temperature data is compared to all other indicated channels during
the “Hottest Of” Comparison.
5.17 Channel Configuration Register
Table 5.22 Channel Configuration Register
ADDR
3Bh
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
00h
R/W
Channel
Config
REM_
HOT
-
-
-
-
EXT4_
APD
EXT2_
APD
EXT1_
APD
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).
SMSC EMC1046/EMC1047
Revision 0.69 (06-29-09)
DATA3S3HEET
SMSC [ SMSC CORPORATION ]
