EMC6D102 SMSC Corporation, EMC6D102 Datasheet - Page 48

• Manufacturer Part Number: EMC6D102
• Description: Fan Control Device
• Manufacturer: SMSC Corporation

Revision 0.4 (06-15-06)
7.2
7.2.1
7.2.2
7.2.3
Register
Address
Register
Address
Register
Address
1Dh
1Eh
1Fh
10h
20h
21h
22h
23h
24h
Read/
Read/
Read/
Write
Write
Write
R/W
R/W
R/W
R/W
Register 10h: SMSC Test Register
Setting the Lock bit has no effect on this register.
This register must not be written. Writing this register may produce unexpected results.
Register 1Dh, 1Eh, 1Fh: Offset Registers
These registers become read only when the Lock bit is set. Any further attempts to write to these
registers shall have no effect.
Offset Register Ambient only applies to the internal (ambient) temperature reading. This register
contains a 2's complement value, which is added (or subtracted if the number is negative) to the
ambient temperature reading. The default value in the offset register is zero, so initially zero is always
added to the temperature reading.
Offset Register 2 only applies to the remote diode 2 temperature reading. This register contains a
2's complement value, which is added (or subtracted if the number is negative) to external temperature
reading 2. The default value in the offset register is zero, so initially zero is always added to the
temperature reading.
Offset Register 1 only applies to the remote diode 1 temperature reading. This register contains a
2's complement value, which is added (or subtracted if the number is negative) to the external
temperature reading 1 reading. The default value in the offset register is zero, so initially zero is always
added to the temperature reading.
Registers 20-24h: Voltage Reading
Defined Registers
R
R
R
R
R
Offset Register Ambient
Register Name
Offset Register 2
Offset Register 1
SMSC TEST
Register Name
Register Name
+2.5V Reading
+12V Reading
Vccp Reading
VCC Reading
+5V Reading
Fan Control Device with Hardware Monitoring and Acoustic Noise Reduction Features
(MSb)
TST7
Bit 7
DATASHEET
(MSb)
(MSb)
Bit 7
Bit 7
7
7
7
7
7
7
7
7
TST6
Bit 6
48
Bit 6
Bit 6
6
6
6
6
6
6
6
6
TST5
Bit 5
Bit 5
Bit 5
5
5
5
5
5
5
5
5
TST4
Bit 4
Bit 4
Bit 4
4
4
4
4
4
4
4
4
TST3
Bit 3
Bit 3
Bit 3
3
3
3
3
3
3
3
3
TST2
Bit 2
Bit 2
Bit 2
2
2
2
2
2
2
2
2
TST1
Bit 1
Bit 1
Bit 1
1
1
1
1
1
1
1
1
SMSC EMC6D102
(LSb)
(LSb)
(LSb)
TST0
Bit 0
Bit 0
Bit 0
0
0
0
0
0
0
0
0
Datasheet
Default
Default
Default
Value
Value
Value
00h
00h
00h
00h
N/A
N/A
N/A
N/A
N/A