EMC2102-DZK-TR SMSC, EMC2102-DZK-TR Datasheet - Page 39

• Manufacturer Part Number: EMC2102-DZK-TR
• Description: Industrial Temperature Sensors RPM Fan Contrllr
• Manufacturer: SMSC

Specifications of EMC2102-DZK-TR

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
SMSC EMC2102
6.10
32h
ADDRESS
2
0
0
0
0
1
1
1
1
When the Beta Compensation circuitry is disabled, the diode channels will function with default current
levels and will not automatically adjust for beta variation. This mode is used when measuring a discrete
2N3904 transistor or AMD thermal diode.
All of the Beta Configuration Registers are Software Locked.
The REC Configuration Register determines whether Resistance Error Correction is used for each
external diode channel. The REC Configuration Register is software locked.
If either the External Diode 1 channel or External Diode 3 channel is selected by the SHDN_SEL pin
to be the hardware shutdown input channel (see
corresponding RECx bit will be locked. Writing to the bit will have no affect and reading from it will
always report the current setting.
Bit 2 - REC3 - Controls the Resistive Error Correction functionality of External Diode 3
Bit 1 - REC2 - Controls the Resistive Error Correction functionality of External Diode 1
Bit 0 - REC1 - Controls the Resistive Error Correction functionality of External Diode 1
REC Configuration Register
REC
Configuration
‘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.
REGISTER
BETAX[2:0]
Table 6.13 Beta Compensation Look Up Table
Table 6.14 REC Configuration Register
1
0
0
1
1
0
0
1
1
-
B7
-
B6
DATASHEET
-
B5
39
0
0
1
0
1
0
1
0
1
-
B4
Table 5.4, "SHDN_SEL Pin
-
B3
0.1111
0.1765
0.25
0.333 (default)
0.4285
1.0
2.333
Disabled
REC3
B2
REC2
MINIMUM BETA
B1
Configuration"), then the
REC1
Revision 2.02 (05-17-07)
B0
07h
DEFAULT