EMC2300 Datasheet, PDF (47/81 Pages) SMSC Corporation – Fan Control Device with High Frequency PWM and Temperature Monitors

Reg
Addr
60h
61h
62h
63h
64h
65h
66h
67h
68h
69h
6Ah
6Bh
6Ch
6Fh
7Ch
7Dh
7Eh
7Fh
Read
/Write
Reg Name
R/W Zone 2 Range/PWM 2 Frequency
R/W Zone 3 Range/PWM 3 Frequency
R/W
PWM1 Ramp Rate Control
R/W PWM 2, PWM3 Ramp Rate Control
R/W
PWM 1 MINIMUM Duty Cycle
R/W
PWM 2 MINIMUM Duty Cycle
R/W
PWM 3 MINIMUM Duty Cycle
R/W
Zone 1 Low Temp Limit
R/W
Zone 2 Low Temp Limit
R/W
Zone 3 Low Temp Limit
R/W
Zone 1 Temp Absolute Limit
R/W
Zone 2 Temp Absolute Limit
R/W
Zone 3 Temp Absolute Limit
R/W
XOR Test Tree Enable
R/W
Special Function Register
Note 8.4
R
Reserved
R/W
Interrupt Enable 1 (Voltages)
R/W
Configuration
80h
R/W
Interrupt Enable 2 (Fan Tachs)
81h
R/W
TACH_PWM Association
82h
R/W
Interrupt Enable 3 (Temp)
85h
R
A/D Converter LSbs Reg 1
86h
R
A/D Converter LSbs Reg 2
87h
R
A/D Converter LSbs Reg 3
Table 8.1 Register Summary (continued)
Bit 7
MSb
RAN3
RAN3
RES
RR2E
7
7
7
7
7
7
7
7
7
RES
AVG2
RES
VCC
INIT
RES
T4H
RES
RD2.3
RES
RES
Bit 6
Bit 5
Bit 4
Bit 3
RAN2 RAN1 RAN0 FRQ3
RAN2 RAN1 RAN0 FRQ3
RES
RES
RES RR1E
RR2-2 RR2-1 RR2-0 RR3E
6
5
4
3
6
5
4
3
6
5
4
3
6
5
4
3
6
5
4
3
6
5
4
3
6
5
4
3
6
5
4
3
6
5
4
3
RES
RES
RES
RES
AVG1 AVG0 SMSC SMSC
Note 8.7 Note 8.7
RES
RES
RES
RES
RES
RES
RES VCCP
SMSC SMSC SUREN TRDY
Note 8.7 Note 8.7
RES
RES TACH4 TACH3
T4L
T3H
T3L
T2H
RES
RES
RES D2EN
RD2.2 RD2.1 RD2.0 RD1.3
RES
RES
RES AM.3
RES
RES
RES
RES
Bit 2
FRQ2
FRQ2
RR1-2
RR3-2
2
2
2
2
2
2
2
2
2
RES
INTEN
RES
RES
RES
Bit 1
Bit 0
LSb
FRQ1 FRQ0
FRQ1 FRQ0
RR1-1 RR1-0
RR3-1 RR3-0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
RES
XEN
MON-MD LPMD
Note 8.5
RES
RES
RES VOLT
P2INT T3INT
TACH2
T2L
D1EN
RD1.2
AM.2
RES
TACH1
T1H
AMB
RD1.1
AM.1
RES
TACH
T1L
TEMP
RD1.0
AM.0
RES
Default
Value
C3h
C3h
E0h
00h
80h
80h
80h
80h
80h
80h
64h
64h
64h
00h
40h
00h
ECh
10h
1Eh
A4h
0Eh
N/A
N/A
N/A
Lock Start
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Note 8.4
No
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
No
No
No
No
No
No