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EMC2103 Datasheet(PDF) 35 Page - SMSC Corporation

Part # EMC2103
Description  RPM-Based Fan Controller with HW Thermal Shutdown
PDF  84 Pages
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Manufacturer  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

EMC2103 Datasheet(HTML) 35 Page - SMSC Corporation

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RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
SMSC EMC2103
35
Revision 0.85 (01-29-08)
DATASHEET
Chapter 6 Register Set
6.1
Register Map
The following registers are accessible through the SMBus Interface. All register bits marked as ‘-’ will
always read ‘0’. A write to these bits will have no effect.
APPLICATION NOTE: All registers denoted with a ** are specific to the EMC2103-2 only. Writing to these registers
by the EMC2103-1 will have no affect and reading from them will return ‘00h’.
Table 6.1 EMC2103 Register Set
ADDR
R/W
REGISTER
NAME
FUNCTION
DEFAULT
VALUE
LOCK
PAGE
Temperature Registers
00h
R
Internal Temp
Reading High
Byte
Stores the integer data of the Internal
Diode
00h
No
Page 42
01h
R
Internal Temp
Reading Low Byte
Stores the fractional data of the
Internal Diode
00h
No
Page 42
02h
R
External Diode 1
Temp Reading
High Byte
Stores the integer data of External
Diode 1
00h
No
Page 42
03h
R
External Diode 1
Temp Reading
Low Byte
Stores the fractional data of External
Diode 1
00h
No
Page 42
04h **
R
External Diode 2
Temp Reading
High Byte **
Stores the integer data of External
Diode 2
00h
No
Page 42
05h **
R
External Diode 2
Temp Reading
Low Byte **
Stores the fractional data of External
Diode 2
00h
No
Page 42
06h **
R
External Diode 3
Temp Reading
High Byte **
Stores the integer data of External
Diode 3
00h
No
Page 42
07h **
R
External Diode 3
Temp Reading
Low Byte **
Stores the fractional data of External
Diode 3
00h
No
Page 42
0Ah
R
Critical/Thermal
Shutdown
Temperature
Stores the calculated Critical/Thermal
Shutdown temperature high limit
derived from TRIP_SET pin voltage
N/A
No
Page 43
0Ch
R/W
Pushed
Temperature 1
Stores the integer data for Pushed
Temperature 1 to drive the LUT
00h
No
Page 43
0Dh
R/W
Pushed
Temperature 2
Stores the integer data for Pushed
Temperature 2 to drive the LUT
00h
No
Page 43
10h
R
TRIP_SET
Voltage
Stores the measured voltage on the
TRIP_SET pin
FFh
No
Page 44



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