EVB-EMC2104/05 User Manual
Revision 1.0 (08-21-07)
SMSC EMC2104/05
2
1 Overview
The EMC2104/05 are SMBus compliant fan controllers with up to five (4 external and 1 internal)
temperature channels including hardware set thermal / critical shutdown circuitry. The fan drivers can
be operated using two methods each with two modes. The methods include an RPM based Fan Speed
Control Algorithm and a direct fan drive setting. The modes include manually programming the desired
settings or using the internal programmable temperature look-up table to select the desired setting
based on measured temperature.
The temperature monitors offer 1°C accuracy (for external diodes) with sophisticated features to
reduce errors introduced by series resistance and beta variation of substrate thermal diode transistors
commonly found in processors.
The EMC2104/05 also include a hardware programmable temperature limit and dedicated system
shutdown output for thermal protection of critical circuitry.
A block diagram of this EVB is shown in
below.
Figure 1.1 EMC2104/05 EVB Block Diagram
1.1
Related Documents
The CD included with the evaluation board contains the following documents:
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Evaluation Board Checklist
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Bill Of Materials
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Schematic
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Datasheet
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Chip Manager Application
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Register Definition File (EMC2104/05.xml and EMC2105.xml)
