EMC2113 datasheet(10/85 Pages) SMSC

10 / 85 page

RPM-Based Fan Controller with Multiple Temperature Zones & Hardware Thermal Shutdown

Datasheet

Revision 1.2 (10-08-09)

SMSC EMC2113

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

External Diode 1 -or- Pushed Temperature 1

Temperature Column 2

External Diode 2

Temperature Column 3

External Diode 3 -or- Pushed Temperature 1

Temperature Column 4

Internal Diode -or- Pushed Temperature 2

EMC2113 Datasheet(PDF) 10 Page - SMSC Corporation