EVB-EMC2102 SMSC, EVB-EMC2102 Datasheet - Page 2

• Manufacturer Part Number: EVB-EMC2102
• Description: MCU, MPU & DSP Development Tools Evaluation Board
• Manufacturer: SMSC

Specifications of EVB-EMC2102

• Processor To Be Evaluated: EMC2102
• Interface Type: USB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

EVB-EMC2102 User Manual
1 Overview
The EMC2102 is an SMBus, closed-loop, RPM-based fan controller/driver with temperature monitors,
hardware (HW) thermal shutdown and reset controller. The EMC2102 is packaged in a thermally
enhanced, compact, 5x5, 28-pin green, lead-free QFN package.
The EMC2102 utilizes Beta Compensation and Resistance Error Correction (REC) to accurately
monitor three external temperature zones. These features allow great accuracy for CPU substrate
thermal diodes on multiple process geometries as well as with discrete diode-connected transistors.
Both Beta Compensation and REC can be disabled on the EMC2102 to maintain accuracy when
monitoring AMD thermal diodes.
The EMC2102 includes a closed-loop RPM based Fan Control Algorithm that integrates a linear fan
driver capable of sourcing 600mA of current. The fan control algorithm is designed to work with fans
that operate up to 16,000 RPMs.
The EMC2102 provides a stand-alone HW thermal shutdown block. The HW thermal shutdown logic
can be configured for a few common configurations based on the strapping level of the SHDN_SEL
pin on the PCB. The HW thermal shutdown point can be set in 1°C increments by using a discrete
resistor divider implemented on the TRIP_SET pin.
The EMC2102 also provides 5V supply ‘power good’ function with a threshold of 4.5V. This function
is provided on the RESET# pin.
All of the modes and functions of the EMC2102 can be tested and observed with the EVB-EMC2102.
A block diagram of this EVB is shown in
Figure
1.1.
EMC2102 EVB Block Diagram.jpg
Figure 1.1 EMC2102 EVB Block Diagram
Revision 1.1 (12-13-06)
SMSC EMC2102
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