RPM-Based Fan Controller with Multiple Temperature Zones & Hardware Thermal Shutdown
Datasheet
Chapter 2 Delta from EMC2103
The EMC2113 is compatible with the EMC2103-2 with the following changes:
Removed two GPIOs - Pins 4 and 5 of the EMC2103-2 were GPIO pins. These have been
removed.
Added PWM Input functionality - This functionality allows the user to drive a PWM input into the
EMC2113. The duty cycle of the PWM represents a temperature value and can be used as an input
to the Fan Control Look Up Table.
Added ADDR_SEL functionality - This functionality allows the user to choose one of six SMBus
address options.
Updated Hysteresis within Look Up Table - The Fan Control Look Up Table in the EMC2113 allows
the user to program a different hysteresis value to apply to each temperature input channel instead
of a single hysteresis value that applies to all temperature input channels.
Updated input muxing for the Look Up Table - The Fan Control Look Up Table has more options
over which temperature channel is used for fan control.
Updated HW set shutdown functionality to include option for Internal diode
Added control to disable Ramp Rate control if one or more temperatures exceed the high limit
Added SMBus Block Read and Write capability
Table 2.1 LUT Options
TEMPERATURE INPUT
EMC2113 OPTIONS
Temperature Column 1
Temperature Column 2
Temperature Column 3
Temperature Column 4
External Diode 1 -or- Pushed Temperature 1
External Diode 2
External Diode 3 -or- Pushed Temperature 1
Internal Diode -or- Pushed Temperature 2
Revision 1.2 (10-08-09)
SMSC EMC2113
DATA1S0HEET
SMSC [ SMSC CORPORATION ]
