Fan Control Device with Hardware Monitoring and Acoustic Noise Reduction Features
Datasheet
Table 7.1 Register Summary (continued)
Bit 7
MSb
Bit 0
LSb
Reg
Read/
Write
Default
Value
Reg Name
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Lock
Start
Addr
53h
54h
55h
56h
57h
58h
59h
5Ah
5Bh
5Ch
5Dh
5Eh
5Fh
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
Remote Diode 2 High Temp
Tach1 Minimum LSB
Tach1 Minimum MSB
Tach2 Minimum LSB
Tach2 Minimum MSB
Tach3 Minimum LSB
Tach3 Minimum MSB
Tach4 Minimum LSB
Tach4 Minimum MSB
PWM 1 Configuration
PWM 2 Configuration
PWM 3 Configuration
7
6
6
5
5
4
4
3
3
2
2
1
0
7Fh
FFh
FFh
FFh
FFh
FFh
FFh
FFh
FFh
62h
62h
62h
C3h
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
7
1
0
15
14
13
12
4
11
10
9
8
7
6
5
3
2
1
0
15
14
13
12
4
11
10
9
1
8
0
7
6
5
3
2
15
14
13
12
4
11
10
9
8
7
6
5
3
2
1
0
15
14
13
12
INV
INV
INV
RAN0
11
10
9
8
ZON2
ZON2
ZON2
RAN3
ZON1
ZON1
ZON1
RAN2
ZON0
ZON0
ZON0
RAN1
RES
RES
RES
RES
SPIN2
SPIN2
SPIN2
FRQ2
SPIN1
SPIN1
SPIN1
FRQ1
SPIN0
SPIN0
SPIN0
FRQ0
Zone 1 Range/PWM 1 Fre-
quency
60h
61h
62h
63h
R/W
R/W
R/W
R/W
Zone 2 Range/PWM 2 Fre-
quency
RAN3
RAN3
OFF3
RR2E
RAN2
RAN2
OFF2
RR2-2
RAN1
RAN1
OFF1
RR2-1
RAN0
RAN0
RES
RES
RES
FRQ2
FRQ2
RR1-2
RR3-2
FRQ1
FRQ1
RR1-1
RR3-1
FRQ0
FRQ0
RR1-0
RR3-0
C3h
C3h
00h
00h
Yes
Yes
Yes
Yes
No
No
No
No
Zone 3 Range/PWM 3 Fre-
quency
Min/Off, PWM1 Ramp Rate Con-
trol
RR1E
RR3E
PWM 2, PWM3 Ramp Rate Con-
trol
RR2-0
64h
65h
66h
67h
68h
69h
6Ah
6Bh
6Ch
6Dh
6Eh
6Fh
70h
71h
72h
73h
74h
75h
76h
77h
78h
79h
7Ah
7Bh
7Ch
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
PWM 1 MINIMUM Duty Cycle
PWM 2 MINIMUM Duty Cycle
PWM 3 MINIMUM Duty Cycle
Zone 1 Low Temp Limit
Zone 2 Low Temp Limit
Zone 3 Low Temp Limit
Zone 1 Temp Absolute Limit
Zone 2 Temp Absolute Limit
Zone 3 Temp Absolute Limit
Zone 1, Zone 2 Hysteresis
Zone 3, Hysteresis
7
7
6
6
5
5
4
4
3
3
2
2
1
0
80h
80h
80h
5Ah
5Ah
5Ah
64h
64h
64h
44h
40h
00h
N/A
N/A
N/A
09h
09h
09h
09h
09h
09h
00h
00h
00h
40h
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
H1-3
H3-3
RES
TST7
TST7
TST7
RES
RES
RES
RES
RES
RES
TST7
RES
TST7
AVG2
H1-2
H3-2
RES
TST6
TST6
TST6
RES
RES
RES
RES
RES
RES
TST6
TST6
TST6
AVG1
H1-1
H3-1
RES
TST5
TST5
TST5
RES
RES
RES
RES
RES
RES
TST5
TST5
TST5
AVG0
H1-0
H3-0
RES
TST4
TST4
TST4
RES
RES
RES
RES
RES
RES
TST4
TST4
TST4
SMSC
H2-3
RES
RES
TST3
TST3
TST3
TST3
TST3
TST3
TST3
TST3
TST3
TST3
TST3
TST3
SMSC
H2-2
RES
RES
TST2
TST2
TST2
TST2
TST2
TST2
TST2
TST2
TST2
TST2
TST2
TST2
INTEN
H2-1
RES
RES
TST1
TST1
TST1
TST1
TST1
TST1
TST1
TST1
TST1
TST1
TST1
TST1
H2-0
RES
XEN
TST0
TST0
TST0
TST0
TST0
TST0
TST0
TST0
TST0
TST0
TST0
TST0
XOR Test Tree Enable
SMSC Test Register
R
SMSC Test Register
No
R
SMSC Test Register
No
R
SMSC Test Register
No
R/W
R
SMSC Test Register
Yes
No
SMSC Test Register
R/W
R
SMSC Test Register
Yes
No
SMSC Test Register
R/W
R/W
R
SMSC Test Register
Yes
Yes
No
SMSC Test Register
SMSC Test Register
R/W
SMSC Test Register
Yes
R/W
Note 7.4
Special Function Register
MON-
MD
LPMD
Note 7.5
Yes
Note 7.4
Note 7.7 Note 7.7
7Dh
7Eh
7Fh
R
Reserved
Interrupt Enable 1 (Voltages)
Configuration
RES
VCC
INIT
RES
12V
RES
5V
RES
RES
RES
RES
25V
RES
RES
RES
VOLT
T3INT
00h
ECh
10h
No
Yes
Yes
No
No
No
R/W
R/W
VCCP
SMSC
Note 7.7 Note 7.7
SMSC SUREN TRDY
RES
P2INT
80h
81h
82h
83h
84h
85h
86h
R/W
R/W
R/W
R
Interrupt Enable 2 (Fan Tachs)
TACH_PWM Association
Interrupt Enable 3 (Temp)
Reserved
RES
T4H
RES
T4L
RES
T3H
TACH4 TACH3 TACH2 TACH1
TACH
T1L
1Eh
A4h
0Eh
00h
00h
N/A
N/A
Yes
Yes
Yes
No
No
No
No
No
No
No
No
T3L
RES
T2H
D2EN
RES
T2L
D1EN
RES
T1H
AMB
RES
RES
RES
RES
RES
RD2.2
V12.2
RES
TEMP
RES
RES
RES
RES
R
Reserved
RES
RES
RES
RES
RES
RES
RES
No
R
A/D Converter LSbs Reg 1
A/D Converter LSbs Reg 2
RD2.3
V12.3
RD2.1
V12.1
RD2.0
V12.0
RD1.3
AM.3
RD1.2
AM.2
RD1.1
AM.1
RD1.0
AM.0
No
R
No
Revision 0.4 (04-05-05)
SMSC EMC6D102
DATA4S6HEET
SMSC [ SMSC CORPORATION ]
