EVB-EMC2102 SMSC, EVB-EMC2102 Datasheet - Page 8

• 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

Revision 1.1 (12-13-06)
3.5
3.6
3.7
3.8
Resistance Error Correction (REC)
Power Source
System Connectors
LED Indicators
If connecting to a CPU’s thermal diode, it is necessary to provide a common ground. Also, it is usually
necessary to bias the appropriate CPU Vcc plane above this common ground to avoid forward-biasing
the ESD diodes with the temperature sensor signals. Test point TP1 - TP4 on the evaluation board
can provide ground connections. Consult the CPU manufacturer’s datasheet for guidance on
interfacing to the thermal diode.
The EVB-EMC2102 also has one on-board thermistor. JP7 and JP8 can be used to select either the
thermistor or Q3, but not both, to be connected to the EMC2102 device. Refer to
Settings or the EVB schematic for more details.
Note:
The remote diode Q3 signal path has a 100 ohm series resistor to demonstrate the EMC2102’s REC
feature. The resistor may be effectively removed from the circuit by installing a jumper on JP9. See
Table 3.3
The EVB-EMC2102 requires the USB cable or an external +5V supply to operate. The USB-SMBus
bridge regulates the +5V USB or external power to +3.3V which is used by the EMC2102 and other
EVB circuitry. The on-board fan is also powered by the same +5V, from the USB or external supply.
The EVB will need less than 500 mA current while using the on-board fan. If a high current fan is
connected to the EVB through terminal P1, the external power supply must be used. See
for power source selection jumper settings.
There are 4 system connectors on the EVB-EMC2102, as listed in
There are 8 LEDs on the EVB-EMC2102 to indicate the status of the board, as listed in
LED1
LED2
LED3
LED4
LED5
LED6
PLUG/HEADER
LED
D3
The thermistor function should not be used for EMC2102 Revision A device due to a known issue on the
device. The issue will be fixed in the future release of the device.
P1
P2
P3
P4
for details on the REC jumper settings.
Bridge Activity
POWER_OK
USB Activity
SYS_SHDN
SIGNAL
RESET
ALERT
+3.3V
Fan Header
USB Port
Power Conn. +5V DC
C8051F320 Program Port
+3.3V power OFF
+3.3V power OFF
+3.3V power OFF
No Activity on
USB/SMBus Bridge
SYS_SHDN not asserted
+3.3V power OFF
No Activity on USB port
DESCRIPTION
Table 3.2 LED Status Indicators
Table 3.1 System Connectors
OFF
8
3-pin header, latching (1x3)
USB type mini-B
2-pos. screw terminal
8-pin programming header (2x4)
No ALERT
POWER_OK asserted
RESET not asserted
+3.3V power ON
Activity on
USB/SMBus Bridge
Activity on USB port
GREEN
N/A
CONNECTOR TYPE
Table 3.1
ALERT asserted
POWER_OK not asserted
RESET asserted
SYS_SHDN asserted
EVB-EMC2102 User Manual
below.
Table 3.3
RED
N/A
N/A
N/A
SMSC EMC2102
Table
Table 3.3
Jumper
3.2.