EMC2106 Datasheet, PDF (88/106 Pages) SMSC Corporation – Dual RPM-Based Linear Fan Controller with Hardware Thermal Shutdown

6.45
Dual RPM-Based Linear Fan Controller with Hardware Thermal Shutdown
Datasheet
corresponding GPIO changes states regardless if the ALERT pins are asserted. Once a bit is set, it
will remain set until read.
If any bit in this register is set, then the GPIO status bit will be set.
Bit 5 - 0 - GPIOx_STS - Indicates that the GPIOx pin has changed states from a ‘0’ to a ‘1’ or a ‘1’ to
a ‘0’ (when configured as a GPIO input).
Software Lock Register
Table 6.64 Software Lock Register
ADDR R/W REGISTER
B7
B6
B5
B4
B3
EFh
R/W
Software
Lock
-
-
-
-
-
B2
B1
B0 DEFAULT
-
-
LOCK
00h
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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.
Product Features Register
Table 6.65 Product Features Register
ADDR
R/W
REGISTER B7
B6
B5
B4
B3
B2
B1
B0 DEFAULT
FCh
R
Product
Features
-
-
-
-
-
-
SHDN_SEL[1:0]
00h
The Product Features Register indicates which pin selected functionality is enabled.
Bit 1 - 0 - SHDN_SEL[1:0] - Indicates what the detected pin state of the SHDN_SEL pin was and which
functions are enabled.
Revision 1.72 (11-01-07)
88
DATASHEET
SMSC EMC2106