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ADEV-BF52xC_HUM_V1.1.docx
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2.2
PCB Placement
DC-Plug
Mini USB-B
USB-B
RESET Button
red
orange
yellow
green
LEDs
Push
-buttons
Configuration
Switch
Mic In
Line In
Headphone
Out
Line Out
Power source
selection
Power LED
ACM-BF52xC
connectors
On-board Mic
Figure 2-1: Board Layout
2.3
Switches, Jumpers and LEDs
The following section describes the Functionality of all jumpers switches and LEDs.
2.3.1
Power Source Selection Jumper
JP1
JP2, JP3
Power source
Comment
short
open
Board powered via USB connectors
Power source for Core Module is 5.0V
open
short
Board powered via DC-plug
Power source for Core Module is 3.3V
Table 2-3: Power source selection
2.3.2
Power LED
The green power LED indicates that a power source is plugged into the board.
2.3.3
GPIO LEDs
Four LEDs are connected to GPIOs of the SPM. They can be free programmed by the developer.