SMSC EMC2106, User Manual, Page: 9 / 12

EMC2106 EVB User Manual
SMSC EMC2106 Revision 1.1 (08-22-07)
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Outputs: FAN_OUT, DAC2, ALERT#, OVERT1#/PWM1, OVERT2#/GPIO4, OVERT3#/GPIO5, and
SYS_SHDN#
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Inputs: CLK_IN and TACH1
3.8 LED Indicators
LEDs indicate the status of the following signals ( Table 3.1 ).
3.9 Jumper Settings
This EVB has many jumper configurations to evaluate all of the features of the EMC2106.
Fan control can conveniently be evaluated with the onboard 5V fan. Connecting this fan to J3 will allow
full control from the EMC2106 via Chipman.
If a 5V 4-wire fan is available, connectors J1 and J2 can be used to evaluate the EMC2106’s ability
to drive and control these types of fans. If PWM1 is to control the 4-wire fan, the appropriate register
in Chipman should be set. If PWM2 is desired to drive a 4-wire 5V fan, J2 should be used. In addition,
JP18 must be in postion 2-3 and JP7 in Position 2-3.
Table 3.1 LED Status Indicators
LED SIGNAL OFF GREEN RED
D3 SYS_SHDN# +3.3V power OFF NA SYS_SHDN#
asserted
LED1 ALERT# +3.3V power OFF ALERT# not asserted ALERT# asserted
LED2 OVERT1# +3.3V power OFF OVERT1# not
asserted
OVERT1# asserted
LED3 OVERT2# +3.3V power OFF OVERT2# not
asserted
OVERT2# asserted
GPIO4 +3.3V power OFF GPIO4 logic high GPIO4 logic low
LED4 +3.3V +3.3V power OFF +3.3V power ON NA
LED5 Bridge Activity NO Activity on
USB/SMBus Bridge
Activity on
USB/SMBus Bridge
NA
LED6 USB Activity NO Activity on USB port Activity on USB port NA
LED7 OVERT3# +3.3V power OFF OVERT3# not
asserted
OVERT3# asserted
GPIO5 +3.3V power OFF GPIO5 logic high GPIO5 logic low
LED8 GPIO1 +3.3V power OFF GPIO1 logic high GPIO1 logic low
LED9 GPIO2 +3.3V power OFF GPIO2 logic high GPIO2 logic low
LED10 GPIO3 +3.3V power OFF GPIO3 logic high GPIO3 logic low
LED11 GPIO6 +3.3V power OFF GPIO6 logic high GPIO6 logic low