BDM-610000075
Rev B
Chapter 3: Connecting the cpuModule
51
Optional RTC Battery Input (CN13)
The optional RTC battery input is the connection for an external backup battery. This battery is used by the
cpuModule when system power is removed in order to preserve the date and time in the real time clock.
Connecting a battery is only required to maintain time when power is completely removed from the cpuModule.
A battery is not required for board operation.
Fan Power, Switched (CN15)
The switched fan power connector (
CN15
) is an optional fan connector which allows the system to power the
fan when the processor temperature reaches high temperatures.
To utilize this connector, refer to the
section on page 81.
Table 34
Optional RTC Battery Input (CN13)
Pin
Signal
Function
1
BAT
RTC Battery Input
2
GND
Ground
WARNING
This optional RTC battery connector (
CN13
) should be left unconnected if the utility port
connector (
CN5
) has a battery connected.
Table 35
Fan Power, Switched (CN15)
Pin
Signal
Function
1
CPU_FAN_PWM
+5 Volts DC, switched
2
GND
Ground
Summary of Contents for BDM-610000075
Page 3: ... Accessing the Analog World www rtd com ISO9001 and AS9100 Certified CMX32M cpuModules ...
Page 4: ...iv CMX32M cpuModule BDM 610000075 Rev B ...
Page 30: ...22 CMX32M cpuModule BDM 610000075 Rev B ...
Page 60: ...52 CMX32M cpuModule BDM 610000075 Rev B ...
Page 102: ...94 CMX32M cpuModule BDM 610000075 Rev B ...
Page 116: ...108 CMX32M cpuModule BDM 610000075 Rev B ...