EMC6D100-DK SMSC [SMSC Corporation], EMC6D100-DK Datasheet - Page 49

• Manufacturer Part Number: EMC6D100-DK
• Description: ENVIRONMENTAL MONITORING AND CONTROL DEVICE WITH AUTOMATIC FAN CAPABILITY
• Manufacturer: SMSC [SMSC Corporation]

Environmental Monitoring and Control Device
Datasheet
8.15
SMSC EMC6D100/EMC6D101
REGISTER
ADDRESS
INPUT
Vccp
VCC
1.8V
2.5V
3.3V
12V
4Ah
4Bh
4Ch
4Dh
1.5V
44h
45h
46h
47h
48h
49h
73h
74h
75h
76h
77h
78h
5V
Registers 44-4Dh, 73-78h: Voltage Limit Registers
Note: registers 73h-78h are applicable to the EMC6D100 only.
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
EMC6D100/EMC6D101 in the interrupt status registers (41-42h, 7Dh). 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 8.4.
Note: The voltages 1.5V, 1.8V and 3.3V in the table above are applicable to the EMC6D100 only.
VOLTAGE
NOMINAL
WRITE
READ/
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
2.25V
12.0V
1.5V
1.8V
2.5V
3.3V
3.3V
5.0V
Vccp High Limit
2.5V High Limit
Vccp Low Limit
VCC High Limit
3.3V High Limit
VCC Low Limit
2.5V Low Limit
12V High Limit
3.3V Low Limit
12V Low Limit
1.5 High Limit
1.8 High Limit
5V High Limit
1.5 Low Limit
1.8 Low Limit
5V Low Limit
REGISTER
NAME
SETTING AT
REGISTER
VOLTAGE
NOMINAL
C0h
C0h
C0h
C0h
C0h
C0h
C0h
C0h
Table 8.4 – Voltage Limits vs. Register Setting
(MSB)
BIT 7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
7
DATASHEET
MAXIMUM
VOLTAGE
16.00V
1.99V
2.39V
3.32V
3.00V
4.38V
4.38V
6.64V
BIT 6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
Page 49
BIT 5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
SETTING AT
REGISTER
MAXIMUM
VOLTAGE
BIT 4
FFh
FFh
FFh
FFh
FFh
FFh
FFh
FFh
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
BIT 3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
VOLTAGE
MINIMUM
BIT 2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
0V
0V
0V
0V
0V
0V
0V
0V
BIT 1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
(LSB)
BIT 0
SETTING AT
REGISTER
VOLTAGE
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
MINIMUM
00h
00h
00h
00h
00h
00h
00h
00h
Rev. 09-09-04
DEFAULT
VALUE
FFh
FFh
FFh
FFh
FFh
FFh
FFh
FFh
00h
00h
00h
00h
00h
00h
00h
00h