EMC2103-2-AP-TR Standard Microsystems (SMSC), EMC2103-2-AP-TR Datasheet - Page 60
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EMC2103-2-AP-TR
Manufacturer Part Number
EMC2103-2-AP-TR
Description
CLOSED LOOP RPM FAN CONTROLLER
Manufacturer
Standard Microsystems (SMSC)
Datasheet
1.EMC2103-3-KP-TR.pdf
(85 pages)
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Part Number:
EMC2103-2-AP-TR
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Revision 0.88 (06-30-08)
2
0
0
0
0
1
1
1
1
Bits 4 - 2 - SPIN_LVL[2:0] - Determines the final drive level that is used by the Spin Up Routine as
shown in
Bit 1 -0 - SPINUP_TIME[1:0] - determines the maximum Spin Time that the Spin Up Routine will run
for (see
elapsed, then an interrupt will be generated. When the RPM based Fan Speed Control Algorithm is
active, the fan driver will attempt to re-start the fan immediately after the end of the last spin up attempt.
The Spin Time is set as shown in
The Fan Spin Up Configuration Register is software locked.
‘1’ - The Spin Up Routine will not drive the PWM to 100%. It will set the drive at the programmed
spin level for the entire duration of the programmed spin up time.
1
0
0
1
1
Section
Table
6.41.
SPIN_LVL[2:0]
5.7). If a valid tachometer measurement is not detected before the Spin Time has
SPINUP_TIME[1:0]
1
0
0
1
1
0
0
1
1
Table 6.41 Spin Level
Table 6.42 Spin Time
Table
DATASHEET
6.42.
60
0
0
1
0
1
0
0
1
0
1
0
1
0
1
RPM-Based Fan Controller with HW Thermal Shutdown
SPIN UP DRIVE LEVEL
TOTAL SPIN UP TIME
60% (default)
500 ms (default)
30%
35%
40%
45%
50%
55%
65%
250 ms
1 sec
2 sec
SMSC EMC2103
Datasheet
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