EMC6D102-CZC-TR View Datasheet(PDF) - SMSC -> Microchip
Part Name
Description
MFG CO.
EMC6D102-CZC-TR
SMSC -> Microchip
'EMC6D102-CZC-TR' PDF : 86 Pages View PDF
Fan Control Device with Hardware Monitoring and Acoustic Noise Reduction Features
Datasheet
This register is read only – a write to this register has no effect.
7.2.13 Registers 44-4Dh: Voltage Limit Registers
Register
Address
44h
45h
46h
47h
48h
49h
4Ah
4Bh
4Ch
4Dh
Read/
Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Register Name
2.5V Low Limit
2.5V High Limit
Vccp Low Limit
Vccp High Limit
VCC Low Limit
VCC High Limit
5V Low Limit
5V High Limit
12V Low Limit
12V High Limit
Bit 7
(MSb)
7
7
7
7
7
7
7
7
7
7
Bit 6
6
6
6
6
6
6
6
6
6
6
Bit 5
5
5
5
5
5
5
5
5
5
5
Bit 4
4
4
4
4
4
4
4
4
4
4
Bit 3
3
3
3
3
3
3
3
3
3
3
Bit 2
2
2
2
2
2
2
2
2
2
2
Bit 1
1
1
1
1
1
1
1
1
1
1
Bit 0
(LSb)
0
0
0
0
0
0
0
0
0
0
Default
Value
00h
FFh
00h
FFh
00h
FFh
00h
FFh
00h
FFh
Setting the Lock bit has no effect on these registers.
If a voltage input either exceeds the value set in the voltage high limit register or falls below or equals
the value set in the voltage low limit register, the corresponding bit will be set automatically by the
EMC6D102 in the interrupt status registers (41-42h). Voltages are presented in the registers at ¾ full
scale for the nominal voltage, meaning that at nominal voltage, each input will be C0h, as shown in
Table 7.5.
Table 7.5 Voltage Limits vs. Register Setting
NOMINAL
INPUT VOLTAGE
2.5V
Vccp
VCC
5V
12V
2.5V
2.25V
3.3V
5.0V
12.0V
REGISTER
SETTING AT
NOMINAL
VOLTAGE
C0h
C0h
C0h
C0h
C0h
MAXIMUM
VOLTAGE
3.32V
3.00V
4.38V
6.64V
16.00V
REGISTER
SETTING AT
MAXIMUM
VOLTAGE
FFh
FFh
FFh
FFh
FFh
REGISTER
MINIMUM
SETTING AT
VOLTAGE MINIMUM VOLTAGE
0V
00h
0V
00h
0V
00h
0V
00h
0V
00h
7.2.14 Registers 4E-53h: Temperature Limit Registers
Register
Address
4Eh
4Fh
50h
51h
52h
53h
Read/
Write
R/W
R/W
R/W
R/W
R/W
R/W
Register Name
Remote Diode 1 Low Temp
Remote Diode 1 High Temp
Internal Low Temp
Internal High Temp
Remote Diode 2 Low Temp
Remote Diode 2 High Temp
Bit 7
(MSb)
7
7
7
7
7
7
Bit 6
6
6
6
6
6
6
Bit 5
5
5
5
5
5
5
Bit 4 Bit 3 Bit 2
4
3
2
4
3
2
4
3
2
4
3
2
4
3
2
4
3
2
Bit 1
1
1
1
1
1
1
Bit 0
(LSb)
0
0
0
0
0
0
Default
Value
81h
7Fh
81h
7Fh
81h
7Fh
Setting the Lock bit has no effect on these registers.
If an external temperature input or the internal temperature sensor either exceeds the value set in the
high limit register or is less than or equal to the value set in the low limit register, the corresponding
SMSC EMC6D102
57
DATASHEET
Revision 0.4 (04-05-05)
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