EVK-ANNA-B112 - User Guide
UBX-18018539 - R01
Product description
Page 8 of 29
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Plugging in a battery to the battery holder BT1
These power supply sources are distributed to the rest of the board as shown in Figure 6.
Figure 6: Block diagram of the power net distribution
1.6.1
Selecting the power configuration jumpers
The EVK-ANNA-B112 offers flexible powering options for the ANNA-B112 module and the board itself.
To configure this, jumpers are added to or removed from pin headers, shorting two of the pins
together and connecting or disconnecting different power nets on the evaluation board. Figure 7
shows the location of the power configuration jumper headers. The 3V3 net is supplied by the board
and will always be powered as long as any of the power sources shown in Figure 6 are connected. The
3V3 net will not provide power unless a jumper is added to jumper header J7.
Figure 7: Jumper headers J7 and J22 are used to select power configurations
