emc2104 Standard Microsystems Corp., emc2104 Datasheet - Page 100

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

Revision 1.74 (05-08-08)
TACH COUNT
(DECIMAL)
2816
2848
2880
2912
2944
2976
3008
3040
3072
3104
3136
3168
3200
3232
3264
3296
3328
3360
3392
3424
3456
3488
3520
3552
3584
3616
3648
3680
3712
3744
3776
Table C.1 Tachometer Count to RPM Look Up Table (Range = 1000 RPM) (continued)
READING (HEX)
REGISTER
5A
5B
5C
5D
5E
5F
6A
6B
6C
6D
6E
6F
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
FAN SPEED
(RPM)
2793
2761
2731
2701
2671
2643
2614
2587
2560
2534
2508
2482
2458
2433
2409
2386
2363
2341
2318
2297
2276
2255
2234
2214
2194
2175
2156
2137
2101
2083
2119
DATASHEET
Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown
100
TACH COUNT
(DECIMAL)
6912
6944
6976
7008
7040
7072
7104
7136
7168
7200
7232
7264
7296
7328
7360
7392
7424
7456
7488
7520
7552
7584
7616
7648
7680
7712
7744
7776
7808
7840
7872
REGISTER
READING
(HEX)
DA
DB
DC
DD
DE
EC
ED
D8
D9
DF
E0
E1
E2
E3
E4
E5
E6
E7
E8
E9
EA
EB
EE
EF
F0
F1
F2
F3
F4
F5
F6
FAN SPEED
SMSC EMC2104
(RPM)
1097
1092
1087
1083
1078
1073
1069
1064
1059
1055
1050
1046
1041
1037
1033
1028
1024
1020
1016
1007
1003
1138
1133
1127
1122
1117
1112
1107
1102
1011
999
Datasheet