EMC2113 datasheet(10/88 Pages) MICROCHIP

10 / 88 page

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

Datasheet

DS20005251A-page 10

 2013 Microchip Technology Inc.

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

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