emc2104 Standard Microsystems Corp., emc2104 Datasheet - Page 63

• Manufacturer Part Number: emc2104
• Description: Emc2104 Dual Rpm-based Pwm Fan Controller With Hardware Thermal Shutdown
• Manufacturer: Standard Microsystems Corp.

ADDR
3Ah
3Bh
3Ch
3Dh
30h
31h
32h
33h
34h
35h
38h
39h
Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown
Datasheet
SMSC EMC2104
6.19
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
1
0
0
1
1
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).
Limit Registers
External Diode
External Diode
External Diode
External Diode
External Diode
External Diode
External Diode
External Diode
Internal Diode
Internal Diode
1 High Limit
2 High Limit
3 High Limit
4 High Limit
1 Low Limit
2 Low Limit
3 Low Limit
4 Low Limit
REGISTER
VIN 4 Low
VIN4 High
High Limit
PWM_BASEX[1:0]
Low Limit
Limit
Limit
752.9
752.9
Table 6.24 PWM_BASEx[1:0] Bit Decode
Sign
Sign
Sign
Sign
Sign
Sign
Sign
Sign
Sign
Sign
B7
Table 6.25 Limit Registers
0
0
1
0
1
376.5
376.5
B6
64
64
64
64
64
64
64
64
64
64
DATASHEET
188.2
188.2
B5
32
32
32
32
32
32
32
32
32
32
63
94.12
94.12
B4
16
16
16
16
16
16
16
16
16
16
47.06
47.06
B3
8
8
8
8
8
8
8
8
8
8
BASE FREQUENCY
2,441Hz (default)
19.531kHz
23.53
23.53
26.00kHz
4,882Hz
B2
4
4
4
4
4
4
4
4
4
4
11.76
11.76
B1
2
2
2
2
2
2
2
2
2
2
Revision 1.74 (05-08-08)
5.88
5.88
B0
1
1
1
1
1
1
1
1
1
1
DEFAULT
(+85°C)
(+85°C)
(+85°C)
(+85°C)
(+85°C)
(0.8V)
(0°C)
(0°C)
(0°C)
(0°C)
(0°C)
(0V)
FFh
55h
55h
55h
55h
55h
00h
00h
00h
00h
00h
00h