Dual RPM-Based PWM Fan Controller
Datasheet
5.19
Software Lock Register
Table 5.29 Software Lock Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
Software
Lock
EFh
R/W
-
-
-
-
-
-
-
LOCK
00h
The Software Lock Register controls the software locking of critical registers. This register is software
locked.
Bit 0 - LOCK - this bit acts on all registers that are designated SWL. When this bit is set, the locked
registers become read only and cannot be updated.
‘0’ (default) - all SWL registers can be updated normally.
‘1’ - all SWL registers cannot be updated and a hard-reset is required to unlock them.
5.20
Product ID Register
Table 5.30 Product ID Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
FDh
R
Product ID
0
0
1
1
0
1
1
0
36h
The Product ID Register contains a unique 8-bit word that identifies the product.
5.21
Manufacturer ID Register
Table 5.31 Manufacturer ID Register
ADDR
FEh
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
5Dh
R
Manufacturer ID
0
1
0
1
1
1
0
1
The Manufacturer ID Register contains an 8-bit word that identifies SMSC.
5.22
Revision Register
Table 5.32 Revision Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
FFh
R
Revision
1
0
0
0
0
0
0
0
80h
The Revision Register contains an 8-bit word that identifies the die revision.
SMSC EMC2302
Revision 1.1 (10-12-09)
DATA3S9HEET
SMSC [ SMSC CORPORATION ]
