emc2106 Standard Microsystems Corp., emc2106 Datasheet - Page 88

• Manufacturer Part Number: emc2106
• Description: Emc2106 Dual Rpm-based Linear Fan Controller With Hardware Thermal Shutdown
• Manufacturer: Standard Microsystems Corp.

ADDR
EFh
ADDR
FCh
Revision 1.74 (05-08-08)
6.45
6.46
R/W
R/W
R/W
R
REGISTER
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).
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.
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.
Software Lock Register
Product Features Register
Software
Lock
‘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.
REGISTER
Features
Product
B7
-
B7
-
Table 6.65 Product Features Register
Table 6.64 Software Lock Register
B6
-
B6
-
DATASHEET
Dual RPM-Based Linear Fan Controller with Hardware Thermal Shutdown
B5
B5
-
-
88
B4
-
B4
-
B3
-
B3
-
B2
-
B2
-
SHDN_SEL[1:0]
B1
B1
-
B0
SMSC EMC2106
LOCK
B0
Datasheet
DEFAULT
00h
DEFAULT
00h