emc2106 Standard Microsystems Corp., emc2106 Datasheet - Page 84

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

ADDR
ADDR
E0h
B6h
B7h
B8h
B9h
Revision 1.74 (05-08-08)
6.38
R/W
R/W
R/W
R/W
R/W
R/W
R/W
LUT2 Voltage
LUT2 Temp 4
LUT 2 Temp
LUT 2 Temp
REGISTER
LUT2 VIN2
3 Setting 8
3 Setting 8
LUT 2 Ext
Hysteresis
REGISTER
Muxed Pin
Setting 8
Setting 8
Setting 8
The Look Up Table 2 Registers hold the 40 entries of the Look Up Table that controls the drive of Fan
2. As the temperature (or voltage) channels are updated, the measured temperature for each channel
is compared against the respective entries in the Look Up Table and the associated drive setting is
loaded into an internal shadow register and stored.
The Muxed Pin Configuration Register controls the pin function for all of the multiple function GPIO
pins.
Bit 7 - PWM1_EN - Enables the OVERT1# / PWM1 pin as a PWM output.
Bit 6 - 5 - GPIO5_CFG[1:0] - Determines the pin function for the OVERT3# / GPIO5 / PWM4 pin as
shown in
can be updated normally.
Muxed Pin Configuration Register
Diode 2
Config
‘0’ (default) - The OVERT1# / PWM1 pin acts as a dedicated interrupt pin for the External Diode
1 channel. All PWM1 controls will be ignored though can be updated normally.
‘1’ - The OVERT1# / PWM1 pin acts as a PWM output. The High Side Fan Driver will be disabled.
Table
TACH /
DRIVE
PWM1
6.56. When not configured as a PWM output, all PWM4 controls will be ignored though
_EN
B7
X
X
X
X
X
X
Table 6.54 Look Up Table2 Registers (continued)
Table 6.55 Muxed Pin Configuration Register
_CFG1
GPIO5
752.9
752.9
B7
B6
-
-
-
-
376.5
376.5
DATASHEET
GPIO5_
B6
64
64
64
CFG0
Dual RPM-Based Linear Fan Controller with Hardware Thermal Shutdown
-
B5
84
188.2
188.2
B5
32
32
32
-
GPIO4_
CFG1
B4
94.12
94.12
B4
16
16
16
16
_CFG0
GPIO4
B3
47.06
47.06
B3
8
8
8
8
GPIO3
_CFG
B2
23.53
23.53
B2
4
4
4
4
GPIO2
_CFG
11.76
11.76
B1
B1
2
2
2
2
SMSC EMC2106
GPIO1
_CFG
5.88
5.88
B0
B0
1
1
1
1
Datasheet
DEFAULT
DEFAULT
(127°C)
(127°C)
(127°C)
(0.4V)
(0.4V)
7Fh
7Fh
7Fh
7Fh
7Fh
0Ah
01h