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EMC2104 Fiches technique(PDF) 63 Page - SMSC Corporation

No de pièce EMC2104
Description  Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown
PDF  101 Pages
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Fabricant  SMSC [SMSC Corporation]
Site Internet  http://www.smsc.com
Logo SMSC - SMSC Corporation

EMC2104 Fiches technique(HTML) 63 Page - SMSC Corporation

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Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown
Datasheet
SMSC EMC2104
63
Revision 1.74 (05-08-08)
DATASHEET
6.19
Limit Registers
The EMC2104 contains high limits for all temperature channels and voltage channels. If any
measurement meets or exceeds the high limit then the appropriate status bit is set and the ALERT#
pin are asserted (if enabled).
Table 6.24 PWM_BASEx[1:0] Bit Decode
PWM_BASEX[1:0]
BASE FREQUENCY
10
0
0
26.00kHz
0
1
19.531kHz
1
0
4,882Hz
1
1
2,441Hz (default)
Table 6.25 Limit Registers
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
30h
R/W
External Diode
1 High Limit
Sign
64
32
16
8
4
2
1
55h
(+85°C)
31h
R/W
External Diode
2 High Limit
Sign
64
32
16
8
4
2
1
55h
(+85°C)
32h
R/W
External Diode
3 High Limit
Sign
64
32
16
8
4
2
1
55h
(+85°C)
33h
R/W
External Diode
4 High Limit
Sign
64
32
16
8
4
2
1
55h
(+85°C)
34h
R/W
Internal Diode
High Limit
Sign
64
32
16
8
4
2
1
55h
(+85°C)
35h
R/W
VIN4 High
Limit
752.9
376.5
188.2
94.12
47.06
23.53
11.76
5.88
FFh
(0.8V)
38h
R/W
External Diode
1 Low Limit
Sign
64
32
16
8
4
2
1
00h
(0°C)
39h
R/W
External Diode
2 Low Limit
Sign
64
32
16
8
4
2
1
00h
(0°C)
3Ah
R/W
External Diode
3 Low Limit
Sign
64
32
16
8
4
2
1
00h
(0°C)
3Bh
R/W
External Diode
4 Low Limit
Sign
64
32
16
8
4
2
1
00h
(0°C)
3Ch
R/W
Internal Diode
Low Limit
Sign
64
32
16
8
4
2
1
00h
(0°C)
3Dh
R/W
VIN 4 Low
Limit
752.9
376.5
188.2
94.12
47.06
23.53
11.76
5.88
00h
(0V)



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