emc2106 Standard Microsystems Corp., emc2106 Datasheet - Page 74

• Manufacturer Part Number: emc2106
• Description: Emc2106 Dual Rpm-based Linear Fan Controller With Hardware Thermal Shutdown
• Manufacturer: Standard Microsystems Corp.

ADDR
45h
85h
Revision 1.74 (05-08-08)
6.27
R/W
R/W
R/W
GAIND OR GAINP OR GAINI [1:0]
The Gain Register stores the gain terms used by the proportional and integral portions of each of the
RPM based Fan Speed Control Algorithms. These gain terms are used as the KD, KI, and KP gain
terms in a classic PID control solution.
1
0
0
1
1
Gain Registers
REGISTER
Register
Register
Gain 1
Gain 2
Figure 6.1 LOWDRIVE Supported Drive Circuit
B7
-
-
0
0
1
1
0
Table 6.38 Gain Registers
Table 6.39 Gain Decode
B6
DATASHEET
-
-
Dual RPM-Based Linear Fan Controller with Hardware Thermal Shutdown
PWM Input
74
B5
GAIND[1:0]
GAIND[1:0]
B4
RESPECTIVE GAIN FACTOR
B3
GAINI[1:0]
GAINI[1:0]
4x (default)
B2
1x
2x
8x
B1
GAINP[1:0]
GAINP[1:0]
B0
SMSC EMC2106
Datasheet
DEFAULT
2Ah
2Ah