EMC2102-DZK-TR SMSC, EMC2102-DZK-TR Datasheet - Page 45
EMC2102-DZK-TR
Manufacturer Part Number
EMC2102-DZK-TR
Description
Industrial Temperature Sensors RPM Fan Contrllr
Manufacturer
SMSC
Datasheet
1.EMC2102-DZK-TR.pdf
(53 pages)
Specifications of EMC2102-DZK-TR
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
SMSC EMC2102
6.20
FDh
ADDRESS
RPM
=
TACH READING REGISTER
----------------------------- -
(
Note 6.2
The Product ID Register contains a unique 8 bit word that identifies the product.
Product ID Register
2
×
Product ID
Register
(EMC2102-1)
poles
REGISTER
1
FFh
RPM
(Note
F6h
3Dh
F5h
0Fh
3Dh
1Eh
)
07h
×
If the LIMIT2K bit is set, the minimum fan speed that can be measured is approximately
1920RPM. Any fan speed lower than this value will be reported as FFh.
Table 6.27 Example TACH Reading for Specific Fan Speeds
--------------------------------- -
COUNT
=
6.2)
(
n 1
1,966,080 m
------------------------------------- -
–
0
COUNT
B7
)
×
---- -
m
1
×
Table 6.28 Product ID Register
×
----------------- -
period
0
B6
1
DATASHEET
×
0
1e6 60
B5
×
45
1
×
B4
LIMIT2K
1
-- -
y
0
1
0
1
0
1
0
1
0
B3
n = number of edges measured (typically
m = TACH multiplier term set by LIMIT2K
y = Scaling factor set by EDGES[1:0] bits
COUNT = TACH Reading Register value
period = period of oscillation (30.5175us
is the period for a 32.768khz clock)
poles = number of poles of the fan
1
B2
(in decimal)
(typically 2)
0
B1
where:
‘0’ = 1
‘1’ = 4
5)
Revision 2.02 (05-17-07)
0
16000
16000
B0
1920
2000
2000
8000
8000
RPM
500
14h
DEFAULT
.
[3]
[4]
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