emc2105 Standard Microsystems Corp., emc2105 Datasheet - Page 45

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

ADDR
00h
01h
02h
03h
04h
RPM-Based High Side Fan Controller with Hardware Thermal Shutdown
Datasheet
SMSC EMC2105
6.1.1
6.2
ADDR
FCh
FDh
FEh
E6h
FFh
EF
R/W
R
R
R
R
R
R/W
R/W
R
R
R
R
R
During Power-On-Reset (POR), the default values are stored in the registers. A POR is initiated when
power is first applied to the part and the voltage on the VDD supply surpasses the POR level as
specified in the electrical characteristics. Any reads to undefined registers will return 00h. Writes to
undefined registers will not have an effect.
Lock Entries
The Lock Column describes the locking mechanism, if any, used for individual registers. All SWL
registers are Software Locked and therefore made read-only when the LOCK bit is set.
Temperature Data Registers
Internal Diode
Internal Diode
Diode 1 High
Diode 2 High
Diode 1 Low
REGISTER
Product Features
High Byte
Low Byte
Manufacturer ID
External
External
External
Software Lock
GPIO Status
VIN1
VIN2
Byte
Byte
Byte
REGISTER
Product ID
Revision
NAME
Table 6.1 EMC2105 Register Set (continued)
Sign
Sign
Sign
400
400
0.5
0.5
B7
Table 6.2 Temperature Data Registers
Indicates change of state for inputs on
Stores information about which pin
controlled product features are set
0.25
0.25
200
200
B6
Stores the unique Product ID
64
64
64
Stores the Manufacturer ID
Locks all SWL registers
Revision Registers
DATASHEET
Lock Register
0.125
0.125
100
100
B5
FUNCTION
32
32
32
Revision
GPIO 1
45
B4
16
16
50
16
50
-
-
B3
25
25
8
8
8
-
-
13.5
13.5
B2
DEFAULT
4
4
4
-
-
VALUE
1Bh
5Dh
00h
00h
00h
02h
6.25
6.25
B1
2
2
2
-
-
Revision 1.74 (05-08-08)
LOCK
SWL
No
No
No
No
No
3.125
3.125
B0
1
1
1
-
-
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PAGE
DEFAULT
00h
00h
00h
00h
00h
00h
00h