emc2105 Standard Microsystems Corp., emc2105 Datasheet - Page 73

• Manufacturer Part Number: emc2105
• Description: Emc2105 Rpm-based High Side Fan Controller With Hardware Thermal Shutdown
• Manufacturer: Standard Microsystems Corp.

ADDR
FDh
ADDR
FEh
ADDR
RPM-Based High Side Fan Controller with Hardware Thermal Shutdown
Datasheet
SMSC EMC2105
FFh
6.40
6.41
6.42
R/W
1
0
0
1
R
FUN_SEL[1:0]
R/W
R
R/W
R
The Product ID Register contains a unique 8 bit word that identifies the product.
The Manufacturer ID Register contains a 8 bit word that identifies SMSC.
The Revision Register contains a 8 bit word that identifies the die revision.
Product ID Register
Manufacturer ID Register
Revision Register
REGISTER
Product ID
Register
Manufacturer ID
0
0
1
0
REGISTER
REGISTER
Revision
EXTERNAL DIODE 1 MODE
Hardware Thermal / Critical
Transistor mode - Beta =
B7
0
Internal diode linked to
Shutdown circuitry
REC = disabled
REC = enabled
B7
Diode mode -
0
Beta = 1111b
Table 6.58 Manufacturer ID Register
B7
Table 6.56 SHDN_SEL Bit Decode
Not used -
0
automatic
B6
Table 6.57 Product ID Register
0
Table 6.59 Revision Register
B6
0
B6
1
DATASHEET
B5
0
B5
0
B5
73
0
B4
1
B4
High range - 92°C to 154°C
0
TEMPERATURE RANGE
B4
CRITICAL / THERMAL
1
60°C to 122°C
60°C to 122°C
SHUTDOWN
Low Range
Low Range
B3
B3
1
0
B3
1
B2
0
B2
B2
0
1
B1
1
B1
0
Revision 1.74 (05-08-08)
B1
TRIP_SET or VIN4
(see
1
B0
TRIP_SET
TRIP_SET
TRIP_SET
0
VIN4 OR
Section
B0
1
B0
1
DEFAULT
6.1.2)
DEFAULT
02h
5Dh
DEFAULT
1Bh