emc2105 Standard Microsystems Corp., emc2105 Datasheet - Page 47

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

ADDR
0Ch
0Dh
ADDR
RPM-Based High Side Fan Controller with Hardware Thermal Shutdown
Datasheet
SMSC EMC2105
6.3
0Ah
6.4
R/W
R/W
R/W
R/W
R
TEMPERATURE (°C)
TEMPERATURE (°C)
The Critical/Thermal Shutdown Temperature Register is a read-only register that stores the Voltage
Programmable Threshold temperature used in the Thermal / Critical Shutdown circuitry. The contents
of the register reflect the calculated temperature based on the TRIP_SET voltage. This register is
updated at the end of every monitoring cycle based on the current value of the TRIP_SET voltage.
The data format is shown in
Critical/Thermal Shutdown Temperature Registers
Pushed Temperature Registers
Temperature 1
Temperature 2
Critical/Thermal
REGISTER
Temperature
127.875
REGISTER
Shutdown
Pushed
Pushed
127
127
130
150
63
64
65
0
1
Table 6.4 Critical/Thermal Shutdown Temperature Registers
Table 6.5 Critical / Thermal Shutdown Data Format
Table 6.3 Temperature Data Format (continued)
Sign
Sign
Table 6.6 Pushed Temperature Register
B7
128
B7
Table
B6
64
B6
64
64
DATASHEET
6.5.
B5
32
0111_1111_000b
0111_1111_111b
B5
32
32
47
0000_0000b
0000_0001b
0100_0000b
0100_0001b
1000_0010b
1001_0110b
0011_1111b
0111_1111b
BINARY
BINARY
B4
16
B4
16
16
B3
8
B3
8
8
B2
4
B2
4
4
HEX (AS READ BY
B1
2
REGISTERS)
B1
Revision 1.74 (05-08-08)
2
2
7F_E0h
7F_00h
HEX
3Fh
7Fh
00h
01h
40h
41h
82h
96h
B0
1
B0
1
1
DEFAULT
(+127°C)
7Fh
DEFAULT
00h
00h