emc2104 Standard Microsystems Corp., emc2104 Datasheet - Page 51
emc2104
Manufacturer Part Number
emc2104
Description
Emc2104 Dual Rpm-based Pwm Fan Controller With Hardware Thermal Shutdown
Manufacturer
Standard Microsystems Corp.
Datasheet
1.EMC2104.pdf
(101 pages)
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Dual RPM-Based PWM Fan Controller with Hardware Thermal Shutdown
Datasheet
SMSC EMC2104
6.3
0Ah
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
Diode Fault
Critical/Thermal
Temperature
127.875
-63.875
REGISTER
-0.125
Shutdown
0.125
127
-63
63
64
65
63
64
-1
0
1
0
1
Table 6.4 Critical/Thermal Shutdown Temperature Registers
Table 6.5 Critical / Thermal Shutdown Data Format
128
B7
Table 6.3 Temperature Data Format
Table
B6
64
DATASHEET
6.5.
B5
32
1000_0000_000b
0000_0000_000b
0000_0000_001b
0000_0001_000b
0100_0000_000b
0100_0001_000b
1100_0000_001b
1100_0001_000b
0011_1111_000b
1111_1111_000b
0111_1111_000b
0111_1111_111b
1111_1111_111b
51
0000_0000b
0000_0001b
0100_0000b
0011_1111b
BINARY
BINARY
B4
16
B3
8
B2
4
HEX (AS READ BY
B1
2
REGISTERS)
Revision 1.74 (05-08-08)
FF_E0h
C0_20h
C1_00h
FF_00h
7F_E0h
80_00h
00_00h
00_20h
01_00h
3F_00h
40_00h
41_00h
7F_00h
HEX
3Fh
00h
01h
40h
B0
1
DEFAULT
(+127°C)
7Fh
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