EMC2103-2-AP-TR Standard Microsystems (SMSC), EMC2103-2-AP-TR Datasheet - Page 35

• Manufacturer Part Number: EMC2103-2-AP-TR
• Description: CLOSED LOOP RPM FAN CONTROLLER
• Manufacturer: Standard Microsystems (SMSC)

RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
Chapter 6 Register Set
APPLICATION NOTE: All registers denoted with a ** are specific to the EMC2103-2 only. Writing to these registers
SMSC EMC2103
6.1
ADDR
04h **
05h **
06h **
07h **
0Ah
0Ch
0Dh
00h
01h
02h
03h
10h
R/W
R/W
R/W
R
R
R
R
R
R
R
R
R
R
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.
Register Map
Reading Low Byte
External Diode 1
External Diode 1
External Diode 2
External Diode 2
External Diode 3
External Diode 3
Critical/Thermal
Temp Reading
Temp Reading
Temp Reading
Temp Reading
Temp Reading
Temp Reading
Temperature 1
Temperature 2
Internal Temp
Reading High
Internal Temp
Temperature
High Byte **
High Byte **
Low Byte **
Low Byte **
REGISTER
TRIP_SET
High Byte
Shutdown
by the EMC2103-1 will have no affect and reading from them will return ‘00h’.
Low Byte
Pushed
Pushed
Voltage
NAME
Byte
Table 6.1 EMC2103 Register Set
Stores the integer data of the Internal
Diode
Stores the fractional data of the
Internal Diode
Stores the integer data of External
Diode 1
Stores the fractional data of External
Diode 1
Stores the integer data of External
Diode 2
Stores the fractional data of External
Diode 2
Stores the integer data of External
Diode 3
Stores the fractional data of External
Diode 3
Stores the calculated Critical/Thermal
Shutdown temperature high limit
derived from TRIP_SET pin voltage
Stores the integer data for Pushed
Temperature 1 to drive the LUT
Stores the integer data for Pushed
Temperature 2 to drive the LUT
Stores the measured voltage on the
TRIP_SET pin
Temperature Registers
DATASHEET
FUNCTION
35
DEFAULT
VALUE
FFh
00h
00h
00h
00h
00h
00h
00h
00h
N/A
00h
00h
Revision 0.88 (06-30-08)
LOCK
No
No
No
No
No
No
No
No
No
No
No
No
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