emc2104 Standard Microsystems Corp., emc2104 Datasheet - Page 30
emc2104
Manufacturer Part Number
emc2104
Description
Emc2104 Dual Rpm-based Pwm Fan Controller With Hardware Thermal Shutdown
Manufacturer
Standard Microsystems Corp.
Datasheet
1.EMC2104.pdf
(101 pages)
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Revision 1.74 (05-08-08)
Maintain Fan Drive
Figure 5.4 RPM based Fan Speed Control Algorithm
Reduce Fan Drive
Yes
Yes
Measure Fan Speed
Set TACH Target
DATASHEET
No
Reading =
Reading <
Required
Spin Up
Target?
Target?
Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown
Count
TACH
TACH
TACH
TACH
?
30
No
Increase Fan Drive
Yes
No
Perform Spin Up
Routine
Ramp Rate Control
SMSC EMC2104
Datasheet
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