MEC1322 Datasheet, PDF (299/456 Pages) Microchip Technology – Keyboard and Embedded Controller for Notebook PC

MEC1322
TABLE 26-9: RANGE DECODE
Range [1:0]
1
0
0
0
0
1
1
0
1
1
Reported Minimum RPHM
500
1000 (default)
2000
4000
TACH Count Multiplier
1
2
4
8
TABLE 26-10: MINIMUM EDGES FOR FAN ROTATION
Edges 1:0]
1
0
Minimum TACH Edges Number of Fan Poles
0
0
3
0
1
5
1
0
7
1
2 (default)
3
1
1
9
4
Effective TACH Multiplier (Based
on 2 Pole Fans)
If Edges Changed
0.5
1
1.5
2
TABLE 26-11: UPDATE TIME
Update [2:0]
2
1
0
TACH Count Multiplier (ms)
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
100
200
300
400 (default)
500
800
1200
1600
26.9.4 FAN CONFIGURATION 2 REGISTER
The Fan Configuration 2 Register controls the tachometer measurement and advanced features of the RPM based Fan
Control Algorithm.
 2014 - 2015 Microchip Technology Inc.
DS00001719D-page 299