emc2104 Standard Microsystems Corp., emc2104 Datasheet - Page 54
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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ADDR
17h
Revision 1.74 (05-08-08)
6.7
AUTO
R/W
R/W
0
0
0
0
0
0
0
0
0
0
0
1
The REC Configuration Register determines whether Resistance Error Correction is used for each
external diode channel. The REC Configuration Register is software locked.
Bit 2 - REC3 - Controls the Resistive Error Correction functionality of External Diode 3 and External
Diode 4 (if APD is enabled, see
Bit 1 - REC2 - Controls the Resistive Error Correction functionality of External Diode 2.
Bit 0 - REC1 - Controls the Resistive Error Correction functionality of External Diode 1. This bit is
locked if the SHDN_SEL pin is not pulled to VDD (see
REC Configuration Register
Configuration
REGISTER
‘0’ - the REC functionality for External Diode 3 is disabled
‘1’ (default) - the REC functionality for External Diode 3 is enabled.
‘0’ - the REC functionality for External Diode 2 is disabled
‘1’ (default) - the REC functionality for External Diode 2 is enabled.
‘0’ - the REC functionality for External Diode 1 is disabled
‘1’ (default) - the REC functionality for External Diode 1 is enabled.
X
3
0
0
0
1
1
1
1
1
1
1
1
REC
Table 6.9 Beta Compensation Look Up Table (continued)
X
2
1
1
1
0
0
0
0
1
1
1
1
BETAX[3:0]
B7
Table 6.10 REC Configuration Register
-
B6
Section
-
1
0
1
1
0
0
1
1
0
0
1
1
X
DATASHEET
Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown
6.9)
B5
54
-
0
1
0
1
0
1
0
1
0
1
0
1
X
B4
-
Table
B3
6.1).
-
Automatically detected
REC3
MINIMUM BETA
B2
Disabled
0.197
0.260
0.342
0.449
0.591
0.778
1.024
1.348
1.773
2.333
REC2
B1
SMSC EMC2104
REC1
B0
Datasheet
DEFAULT
07h
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