emc2104 Standard Microsystems Corp., emc2104 Datasheet - Page 99
emc2104
Manufacturer Part Number
emc2104
Description
Emc2104 Dual Rpm-based Pwm Fan Controller With Hardware Thermal Shutdown
Manufacturer
Standard Microsystems Corp.
Datasheet
1.EMC2104.pdf
(101 pages)
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Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown
Datasheet
SMSC EMC2104
TACH COUNT
(DECIMAL)
1792
1824
1856
1888
1920
1952
1984
2016
2048
2080
2144
2176
2208
2240
2272
2304
2336
2368
2400
2432
2464
2496
2528
2560
2592
2624
2656
2688
2720
2752
2784
2112
Table C.1 Tachometer Count to RPM Look Up Table (Range = 1000 RPM) (continued)
READING (HEX)
REGISTER
3A
3B
3C
3D
3E
3F
4A
4B
4C
4D
4E
4F
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
FAN SPEED
(RPM)
4389
4312
4237
4165
4096
4029
3964
3901
3840
3781
3724
3668
3614
3562
3461
3413
3367
3321
3277
3234
3192
3151
3072
3034
2997
2961
2926
2891
2858
2825
3511
3111
DATASHEET
99
TACH COUNT
(DECIMAL)
5888
5920
5952
5984
6016
6048
6080
6112
6144
6176
6208
6240
6272
6304
6336
6368
6400
6432
6464
6496
6528
6560
6592
6624
6656
6688
6720
6752
6784
6816
6848
6880
REGISTER
READING
(HEX)
BC
BD
CA
CB
CC
CD
CE
B8
B9
BA
BB
BE
BF
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
CF
D0
D1
D2
D3
D4
D5
D6
D7
Revision 1.74 (05-08-08)
FAN SPEED
(RPM)
1336
1328
1321
1314
1307
1300
1293
1287
1280
1273
1267
1260
1254
1248
1241
1235
1229
1223
1217
1205
1211
1199
1193
1187
1182
1176
1170
1165
1159
1154
1148
1143
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