emc2103-3-kp-tr Standard Microsystems Corp., emc2103-3-kp-tr Datasheet - Page 37

• Manufacturer Part Number: emc2103-3-kp-tr
• Description: Emc2103 Rpm-based Fan Controller With Hardware Thermal Shutdown
• Manufacturer: Standard Microsystems Corp.

RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
SMSC EMC2103
3Ah **
ADDR
31h **
32h **
39h **
2Ah
2Bh
3Ch
30h
34h
38h
40h
41h
42h
43h
45h
46h
47h
48h
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/W
Temp High Limit **
Temp High Limit **
Temp Low Limit **
Temp Low Limit **
Fan Configuration
Fan Configuration
External Diode 1
External Diode 2
External Diode 3
External Diode 1
External Diode 2
External Diode 3
Temp High Limit
Temp Low Limit
Internal Diode
Internal Diode
Fan Minimum
Configuration
PWM Config
Fan Spin Up
PWM Divide
REGISTER
PWM Base
Fan Setting
Frequency
High Limit
Low Limit
Fan Step
NAME
Drive
Gain
1
2
Table 6.1 EMC2103 Register Set (continued)
Configures the PWM driver
Controls the base frequency of the
PWM driver
High limit for External Diode 1
High limit for External Diode 2
High limit for External Diode 3
High Limit for Internal Diode
Low Limit for External Diode 1
Low Limit for External Diode 2
Low Limit for External Diode 3
Low Limit for Internal Diode
Always displays the most recent fan
driver input setting for Fan. If the
RPM based Fan Speed Control
Algorithm is disabled, allows direct
user control of the fan driver.
Stores the divide ratio to set the
frequency for the Fan
Sets configuration values for the
RPM based Fan Speed Control
Algorithm for the Fan
Sets additional configuration values
for the Fan driver
Holds the gain terms used by the
RPM based Fan Speed Control
Algorithm for the Fan
Sets the configuration values for Spin
Up Routine of the Fan driver
Sets the maximum change per
update for the Fan
Sets the minimum drive value for the
the Fan driver
Temperature Limit Registers
Fan Control Registers
DATASHEET
FUNCTION
37
DEFAULT
(+85°C)
(+85°C)
(+85°C)
VALUE
(85°C)
(40%)
(0°C)
(0°C)
(0°C)
(0°C)
2Bh
2Ah
00h
03h
55h
55h
55h
55h
00h
00h
00h
00h
00h
01h
38h
19h
10h
66h
Revision 0.88 (06-30-08)
LOCK
SWL
SWL
SWL
SWL
SWL
SWL
SWL
SWL
SWL
SWL
SWL
SWL
SWL
No
No
No
No
No
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