emc2104 Standard Microsystems Corp., emc2104 Datasheet - Page 50

• Manufacturer Part Number: emc2104
• Description: Emc2104 Dual Rpm-based Pwm Fan Controller With Hardware Thermal Shutdown
• Manufacturer: Standard Microsystems Corp.

ADDR
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
APPLICATION NOTE: When each of the External Diode 1, External Diode 2, or External Diode 3 channels are
Revision 1.74 (05-08-08)
6.2
R/W
R
R
R
R
R
R
R
R
R
R
The temperature measurement range is from -64°C to +128°C. The data format is a signed two’s
complement number as shown in
Temperature Data Registers
Internal Diode
Internal Diode
Diode 1 High
Diode 2 High
Diode 3 High
Diode 4 High
Diode 1 Low
Diode 2 Low
Diode 3 Low
Diode 4 Low
REGISTER
High Byte
Low Byte
External
External
External
External
External
External
External
External
VIN1
VIN2
VIN3
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
configured as a voltage input, the voltage data will be stored in the corresponding data
register. Each bit weight represents XmV of resolution so that the final voltage can be
determined by adding the appropriately set bits together. This data will be compared against
the limits normally (see
Sign
Sign
Sign
Sign
Sign
400
400
400
0.5
0.5
0.5
0.5
0.5
B7
Table 6.2 Temperature Data Registers
0.25
0.25
0.25
0.25
0.25
200
200
200
B6
64
64
64
64
64
Section
Table
DATASHEET
Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown
0.125
0.125
0.125
0.125
0.125
100
100
100
B5
32
32
32
32
32
6.3.
6.19).
50
B4
16
16
50
16
50
16
50
16
-
-
-
-
-
B3
25
25
25
8
8
8
8
8
-
-
-
-
-
13.5
13.5
13.5
B2
4
4
4
4
4
-
-
-
-
-
6.25
6.25
6.25
B1
2
2
2
2
2
-
-
-
-
-
3.125
3.125
3.125
B0
SMSC EMC2104
1
1
1
1
1
-
-
-
-
-
Datasheet
DEFAULT
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h