EMC2103 Standard Microsystems Corporation, EMC2103 Datasheet - Page 46

• Manufacturer Part Number: EMC2103
• Description: Rpm-based Fan Controller with HW Thermal Shutdown
• Manufacturer: Standard Microsystems Corporation

Revision 0.85 (01-29-08)
6.8
ADDR
17h
R/W
R/W
2
0
0
0
0
1
1
1
1
The REC Configuration Register determines whether Resistance Error Correction is used for each
external diode channel.
Bit 2 - REC3 (EMC2102-2 only)- Controls the Resistance Error Correction functionality of External
Diode 3 (if enabled)
Bit 1 - REC2 (EMC2103-2 only)- Controls the Resistance Error Correction functionality of External
Diode 2. If External Diode 2 is selected as the hardware shutdown channel then this bit is read only
and determined by the SHDN_SEL pin (see
Bit 0 - REC1 - Indicates the Resistance Error Correction functionality of External Diode 1. If External
Diode 1 is selected as the hardware shutdown channel then this bit is read only and determined by
the SHDN_SEL pin (see
The REC Configuration Register is software locked.
REC 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.
Configuration
REGISTER
REC
BETAX[2:0]
Table 6.11 Beta Compensation Look Up Table
Table 6.12 REC Configuration Register
1
0
0
1
1
0
0
1
1
B7
-
Section
B6
-
5.1.1).
DATASHEET
B5
-
46
Section
B4
-
0
0
1
0
1
0
1
0
1
RPM-Based Fan Controller with HW Thermal Shutdown
5.1.1).
B3
-
REC3
B2
REC2
B1
MINIMUM BETA
Disabled
< 0.176
< 0.111
< 0.08
< 0.29
< 0.48
< 2.33
< 0.9
REC1
B0
SMSC EMC2103
DEFAULT
Datasheet
07h