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EMC2103-2-AP Datasheet(PDF) 79 Page - SMSC Corporation

Part # EMC2103-2-AP
Description  RPM-Based Fan Controller with HW Thermal Shutdown
Download  84 Pages
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Manufacturer  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

EMC2103-2-AP Datasheet(HTML) 79 Page - SMSC Corporation

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RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
SMSC EMC2103
79
Revision 0.85 (01-29-08)
DATASHEET
Note: The values shown in Table A.6 are example settings. All the cells in the look-up table are
programmable via SMBus.
790oC
105oC80oC80oC
09h
(6826 RPM)
8100oC110oC85oC100oC
08h
(7680 RPM)
Table A.7 Fan Speed Determination for Example #2 (using settings in Table A.6)
EXTERNAL
DIODE 1
TEMPERATURE
(CPU)
EXTERNAL
DIODE 2
TEMPERATURE
(GPU)
PUSHED
TEMPERATURE
(DTS1)
PUSHED
TEMPERATURE
(DTS2)
PWM RESULT
Example 1:
75°C
75°C
35°C
(translated as 65°C)
50°C
(translated as 50°C)
0Ch (5120 RPM) -
CPU requires highest
target
Example 2:
75°C
90°C
15°C
(translated as
85°C)
20°C
(translated as 80°C)
08h (7680 RPM) -
DTS1 requires
highest target
Example 3:
75°C
97.25°C
30°C
(translated as 70°C)
5°C
(translated as
95°C)
09h (6826 RPM) -
DTS2 requires
highest target
Table A.6 Fan Speed Control Table Example #2 (continued)
FAN
SPEED
STEP #
EXTERNAL
DIODE 1
TEMPERATURE
(CPU)
EXTERNAL
DIODE 2
TEMPERATURE
(GPU)
PUSHED
TEMPERATURE
SETTING (DTS1)
PUSHED
TEMPERATURE
SETTING (DTS2)
TACH
TARGET


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