Auxiliary Power Connector; Battery - Avnet MSC C10-MB-EV User Manual

MSC C10-MB-EV

4.20 Auxiliary Power Connector

An auxiliary power connector is available to power some interfaces when the input power is
not in the 11V to 13V range and the power at 12V PCIe, VCC_LCD (X1601), VCC_BL_EDP
(X1602), VCC_BL (X1101) and 12V fan power are switched-off. In that case, you can feed
12V from an external power source at X1603 pin 4 to supply these connectors with power.
The drawn current depends on the connected devices.
12V output and 5V can power a harddisk.
Specification auxiliary power connector:

References:

Connector:

Pin-out:
Pin Signal name
1 +5V
2 GND
3 GND
4 AUXPWR
Illustration 4 Auxiliary Power Connector

4.21 Battery

The RTC on the COM Express module is buffered with a socketed battery on the base
board.
In order to clear the CMOS memory, the battery voltage to the COM Express module can
be disconnected via nearby RTC BAT jumper J1402.
Type of battery:

References:

Connector:

Location:
X1603
TE 171825-4, (RM 2,54)
Refer to Table 26
Function
+5V power output, max. 800mA, not fused
Ground
Ground
12V power output, if input power is ATX or power at Power Jack X3101 is in
11V to 13V range, max. 800mA, not fused,
12V power input, if ATX power connector is not used and the power at the
Power Jack X3101 is not in 11V to 13V range, max. 2A, not fused
Table 26 Pin-out Auxiliary Power Connector
2032
BT1401
Renata VBH2032
Refer to Illustration 3 Miscellaneous Parts
45 / 48
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