TME-CLR-ECO-R0V6.docx
Rev 0.6
Page 26 of 34
CAN-Bus
Depending on the used module, the CAN-Bus data lines are provided on the supervisory connector.
Note:
Physical implementation of the CAN-Bus must be realized outside of the
Carrier.
SM-Bus
Interface to the modules SM-Bus.
Main- and Standby Power LED
Signal goes to ‘1’ when Standby Power and Main Power are ready.
Note:
These signals cannot drive an LED directly. Use an appropriate FET to switch
LEDs ON and OFF.
Suspend LED
LED is blinking when board goes to suspend.
This signal can drive a LED directly. Maximum output current is 5mA. Series resistor is needed.
LIFE LED
LED is ON when board is in POST and goes OFF when BIOS is passed. This LED is user programmable at
runtime. Refer to chapter 4.4 for example code.
This signal can drive a LED directly. Maximum output current is 5mA. Series resistor is needed.
WD OUT
Signal goes to ‘1’ when watchdog event occurs.
This signal can drive a LED directly. Maximum output current is 5mA. Series resistor is needed.
SATA LED#
Signal goes to ‘0’ and LED lights up during HDD accesses.
This signal can sink a LED directly. Maximum sink capability is 5mA. Series resistor is needed.
Ethernet Status LEDs
Signals go to ‘0’ during active Ethernet status
This signal can sink a LED directly. Maximum sink capability is 5mA. Series resistor is needed.
3.13
BIOS Recovery (X24)
In case the onboard BIOS has crashed, there is the possibility to plug in a recovery bios on the LPC bus.
If the system should boot from a connected FWH, pin 6 "BIOS_DISABLE#" needs to be pulled to ground.
The onboard BIOS will be disabled for booting activities and can be reprogrammed with a tool running in DOS.
To program the onboard BIOS the FWH can be disconnected after the operation system is loaded successfully.
