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EMC2101-R-ACZL-TR датащи(PDF) 36 Page - SMSC Corporation

номер детали EMC2101-R-ACZL-TR
подробное описание детали  SMBus Fan Control with 1째C Accurate Temperature Monitoring
PDF  57 Pages
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производитель  SMSC [SMSC Corporation]
домашняя страница  http://www.smsc.com
Logo SMSC - SMSC Corporation

EMC2101-R-ACZL-TR датащи(HTML) 36 Page - SMSC Corporation

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SMBus Fan Control with 1°C Accurate Temperature Monitoring
Datasheet
Revision 2.54 (06-16-09)
36
SMSC EMC2101
DATASHEET
6.7
Temperature Limit Registers
The
EMC2101 has two 8-bit limit registers, two 11-bit limit registers, and one hysteresis register. The
limits are checked after every temperature conversion.
If the measured temperature for the internal diode exceeds the Internal Temperature limit, then the
INT_HIGH bit is set in the Status Register. It will remain set until the internal temperature drops below
the high limit.
If the measured temperature for the External Diode exceeds the 11-bit External Diode High Limit, or
drops below the 11-bit External Diode Low Limit, then the appropriate status bit will be set. The status
bit will remain set until the temperature is no longer violating the respective limits.
If the External Diode exceeds the TCRIT Temp Limit (even if it does not exceed the External Diode
Temperature Limit), the TCRIT bit will be set in the Status Register.
The TCRIT bit will remain set in the Status Register until the External Diode Temperature drops below
a lower threshold given by equation [2].
See Section 6.3 and Section 6.5 for ALERT / TACH pin functionality.
6.8
External Temperature Force Register
Table 6.7 Temperature Data Registers
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
05h and 0Bh
R/W
Internal Temp
Limit
-
64
32
16
8
4
2
1
46h (70°C)
07h and 0Dh
R/W
External Diode
High Limit MSB
-
64
32
16
8
4
2
1
46h (70°C)
08h and 0Eh
R/W
External Diode
Low Limit MSB
-
64
32
16
8
4
2
1
00h (0°C)
13h
R/W
External Diode
High Limit LSB
0.5
0.25
0.125
-
-
-
-
-
00h
14h
R/W
External Diode
Low Limit LSB
0.5
0.25
0.125
-
-
-
-
-
00h
19h
R/W
TCRIT Temp
Limit
-
64
32
16
8
4
2
1
55h (85°C)
21h
R/W
TCRIT
Hysteresis
-64
32
16
8
4
2
1
0Ah (10°C)
[2]
Table 6.8 External Diode Force Register
ADDR.
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
0Ch
R/W
External
Temperature Force
Sign
64
32
16
8
4
2
1
00h
TEMP
TCRIT TCRITHYS
–
()
=



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