- Standard Microsystems User Manual Environmental Monitoring Device EVB-EMC2101

EVB-EMC2101 User Manual
SMSC EMC2101 Revision 1.5 (12-13-06)
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3.8 LED Indicators
LEDs indicate the status of the following signals (Ta b le 3 . 1).
3.9 Jumper Settings
This EVB has many jumper configurations to evaluate all of the features of the EMC2101.
3.9.1 Device Power
To enable one of the 2 devices on the EVB, use jumpers J2 and J3. When a device is selected, the
appropriate LED will light as shown in Table 3.1. Ta bl e 3 .2 below summarizes the options. Note: only
one device may be active at a time as both devices have the same SMBus address.
3.9.2 Fan Control
To adjust the fan control circuit one 3-way jumper is used. The two settings are DAC mode and PWM
mode. The default setting is PWM which requires the fan to be connected to FAN CONN. 1 and the
JP8 shorted from pin 1-2.
If the linear DAC mode is desired, several things need configured. First, JP8 must be shorted from pin
2-3 and the fan must be connected to FAN CONN. 2. Then, the device must be configured for linear
operation via the ChipMan software. Consult the datasheet for these settings.Ta bl e 3 . 3.
Table 3.1 LED Status Indicators
LED SIGNAL OFF GREEN RED
LED1 ALERT
+3.3V power OFF No ALERT ALERT
LED2 +3.3V +3.3V power OFF +3.3V power ON NA
LED3 Bridge Activity NO Activity on
USB/SMBus Bridge
Activity on
USB/SMBus Bridge
NA
LED4 USB Activity NO Activity on USB port Activity on USB port NA
LED5 EMC2101
Power
U10 power OFF U10 power ON NA
LED6 EMC2101-R
Power
U11 power OFF U11 power ON NA
Table 3.2 Device Power
JUMPER NAME POSITION 1-2 POSITION 2-3
J2 EMC2101 POWER U10 power ON U10 power OFF
J3 EMC2101-R POWER U11 power ON U11 power OFF
Table 3.3 Fan Driver Configuration
FAN DRIVER
CONFIGURATION JP8 FAN CONNECTOR
PWM Position 1-2 P9
DAC Position 2-3 P5