emc2106 Standard Microsystems Corp., emc2106 Datasheet - Page 45

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

Dual RPM-Based Linear Fan Controller with Hardware Thermal Shutdown
Datasheet
SMSC EMC2106
ADDR
3Ch
3Dh
4Ch
4Dh
3Ah
3Bh
40h
41h
42h
43h
45h
46h
47h
48h
49h
4Ah
4Bh
4Eh
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
Fan 1 Valid TACH
External Diode 3
External Diode 4
TACH 1 Reading
Fan 1 Drive Fail
Fan 1 Drive Fail
Temp Low Limit
Temp Low Limit
Fan 1 Minimum
Band High Byte
Configuration 1
Configuration 2
Band Low Byte
TACH 1 Target
TACH 1 Target
PWM 1 Divide
Fan 1 Spin Up
Voltage 4 Low
Internal Diode
Fan 1 Setting
Configuration
REGISTER
Fan 1 Step
High Byte
High Byte
Low Limit
Low Byte
Gain 1
NAME
Fan 1
Fan 1
Count
Drive
Limit
Table 6.1 EMC2106 Register Set (continued)
driver input setting for Fan 1. If the RPM
Holds the target tachometer reading low
Holds the tachometer reading high byte
based Fan Speed Control Algorithm for
based Fan Speed Control Algorithm for
Holds the minimum tachometer reading
Stores the number of Tach counts used
Low Limit for External Diode 3 or VIN3
Holds the gain terms used by the RPM
Sets additional configuration values for
to determine how the actual fan speed
must match the target fan speed at full
based Fan Speed Control Algorithm is
Sets configuration values for the RPM
Sets the maximum change per update
Sets the configuration values for Spin
disabled, allows direct user control of
Sets the minimum drive value for the
Always displays the most recent fan
Holds the target tachometer reading
that indicates the fan is spinning
Stores the divide ratio to set the
Low limit for Voltage 4 Channel
Up Routine of the Fan 1 driver
Low Limit for External Diode 4
Low Limit for Internal Diode
Fan 1 Control Registers
DATASHEET
frequency for Fan 1
for the Fan 1 driver
high byte for Fan 1
the Fan 1 driver
the Fan 1 driver
the Fan 1 driver
the fan driver.
Fan 1 driver
FUNCTION
scale drive
byte Fan 1
for Fan 1
properly
45
DEFAULT
VALUE
(40%)
(0°C)
(0°C)
(0°C)
(0V)
2Bh
2Ah
FFh
FFh
00h
00h
00h
00h
00h
01h
38h
19h
10h
66h
F5h
00h
00h
F8h
Revision 1.74 (05-08-08)
LOCK
SWL
SWL
SWL
SWL
SWL
SWL
SWL
SWL
SWL
SWL
SWL
SWL
No
No
No
No
No
No
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