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nanoETXexpress-SP/Specification
3.11.10
Miscellaneous Circuits
Speaker
The implementation of this subsystem complies with the COM Express™ Specification. Implementation information is
provided in the COM Express™ Design Guide. Refer to the official PICMG documentation for additional information.
Battery
The implementation of this subsystem complies with the COM Express™ Specification. Implementation information is
provided in the COM Express™ Design Guide. Refer to the official documentation maintained by PICMG for additional
information.
In compliance with EN60950, there are at least two current-limiting devices (resistor and diode) between the battery
and the consuming component.
I2C Bus
For additional information, refer to the COM Express™ Design Guide, I2C application notes and JIDA specifications
which are available at the
customer section
of Kontron's Website. See BIOS chapter for supported features and speed
of I2C.
SM Bus
System Management (SM) bus signals are connected to the SM bus controller, which is located in the -. The SMBus is a
two wire bidirectional bus (clock and serial data) used for system management such as reading parameters from a
memory card, and reading temperatures and voltages of system components. The SM Bus uses the same signaling
scheme as an I2C bus.
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