RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
Table 6.1 EMC2103 Register Set (continued)
REGISTER
NAME
DEFAULT
VALUE
ADDR
R/W
FUNCTION
LOCK
PAGE
78h
R/W
LUT Temp 4
Setting 8
Stores the threshold level for the
Internal Diode channel (or Pushed
Temp 2 temp) that is associated with
the Drive 8 value
7Fh
(127°C)
LUT
Lock
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79h
R/W
R/W
R/W
LUT Temp
Hysteresis
Stores the hysteresis that is shared
for all temperature inputs
0Ah
(10°C)
LUT
Lock
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E1h **
E2h **
GPIO Direction
Register **
Controls the GPIO direction for
GPIOs 1 and 2
00h
No
GPIO Output
Configuration
Register **
Controls the output type of GPIOs 1
and 2
00h
No
E3h **
E4h **
E5h **
E6h **
R/W
R/W
R/W
R/W
GPIO Input
Register **
Stores the inputs for GPIOs 1 and 2
00h
00h
00h
00h
No
No
No
No
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GPIO Output
Register **
Controls the output state of GPIOs 1
and 2
GPIO Interrupt
Enable Register **
Enables interrupts for GPIOs 1 and 2
GPIO Status **
Indicates when the GPIOs change
state
Lock Register
Locks all SWL registers
Revision Registers
EF
R/W
Software Lock
00h
SWL
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FCh
FDh
R
R
Product Features
Indicates which pin selected options
are enabled
00h
24h
26h
No
No
No
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Product ID
EMC2103-1
Stores the unique Product ID
Product ID
EMC2103-2
FEh
FFh
R
R
Manufacturer ID
Revision
Manufacturer ID
Revision
5Dh
00h
No
No
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During Power-On-Reset (POR), the default values are stored in the registers. A POR is initiated when
power is first applied to the part and the voltage on the VDD supply surpasses the POR level as
specified in the electrical characteristics. Any reads to undefined registers will return 00h. Writes to
undefined registers will not have an effect.
6.1.1
Lock Entries
The Lock Column describes the locking mechanism, if any, used for individual registers. All SWL
registers are Software Locked and therefore made read-only when the LOCK bit is set.
SMSC EMC2103
Revision 0.85 (01-29-08)
DATA4S1HEET
SMSC [ SMSC CORPORATION ]
