EMC6D102-CZC-TR SMSC, EMC6D102-CZC-TR Datasheet - Page 31
EMC6D102-CZC-TR
Manufacturer Part Number
EMC6D102-CZC-TR
Description
Industrial Temperature Sensors Auto Fan Contrllr Up to 4 Fans
Manufacturer
SMSC
Datasheet
1.EMC6D102-CZC-TR.pdf
(86 pages)
Specifications of EMC6D102-CZC-TR
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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Fan Control Device with Hardware Monitoring and Acoustic Noise Reduction Features
Datasheet
SMSC EMC6D102
Override all PWM
duty cycle except
outputs to 100%
if disabled or in
manual mode
Time Elapsed?
(5C-5E)
*See
When in Auto Fan Control Operating Mode the hardware controls the fans directly based on monitoring
of temperature and speed.
To control the fans:
1. Set the minimum temperature that will turn the fans on. This value is programmed in Registers 67h-
2. Set the hysteresis value for the minimum temperature that will turn the fans off. This value will hold
Spin Up
No
69h: Zone x Low Temp Limit (Auto Fan Mode Only).
the fans on until the temperature goes a certain amount below the value programmed in the Zone
x Low Temp Limit registers. This value will prevent the fan from oscillating between on and off if
the temperature is around the minimum temperature limit. This value is programmed in Registers
6Dh-6Eh: Zone Hysteresis registers.
Set Fan Output to
Registers 5C-5Eh: PWM Configuration on page 59
Begin Fan Spin-
100%
Up
Yes
Yes
Yes
Figure 6.1 Automatic Fan Control Flow Diagram
End Fan Spin
Yes
Up
Set fan speed based on
Auto Fan Range
Temp >= Limit
Fan Output
Algorithm*
Temp >=
(66~68)
(69~6B)
At 0%?
AbsLimit
Yes
No
No
No
Fan Spinning
Begin Polling
End Polling
DATASHEET
Cycle
Cycle
Up?
No
31
Auto Fan Mode
Off/Min set to 1?
Set fan to min
Initiated
PWM
Yes
(62)
for details.
No
Set Fan Output to
Fan Output
Hyst Temp
Temp >=
(6C~6D)
At 0%?
No
0%
Yes
Revision 0.4 (09-25-07)
Set fan output to
minimum speed.
auto fan mode
(63~65)
No
Yes
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