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RAFT
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UM108xx
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© NXP Semiconductors N.V. 2016. All rights reserved.
User manual
Rev. 1.0 — 14 June 2016
6 of 23
NXP Semiconductors
UM108xx
QN9022 mini DK user guide
2.2 Default jumper settings on mini DK board
The jumpers on QN9022 mini DK are factory set to power the board over the USB. The
factory-set jumper and switch settings are shown in
.
2.3 Power supply
The QN9022 board has two power supply modes:
1. Bus-power mode: The board can be powered using the USB cable. The onboard LDO
is used to regulate output voltage to 3 V and supplies power to all parts on the board.
2. Battery-power mode: The CR2032 supplies power to QN9022 and optional sensor
connector when it is in battery-power mode. The J-Link OB still uses the LDO as
power supply via USB cable. When using USB interface as a power supply, connect
the jumper J11 pin 2 and pin 3; see
.
When using a CR2032 coin cell as a power supply, connect the jumper J11 pin 1 and
pin 2; see
.
Table 2.
QN9022 mini DK board components list
Jumper
Pins to be shorted using
jumpers
Function
J11
2 and 3
USB powered
J12
1 and 2
VCC_QN9022 3.3 V
J13
1 and 2
VCC_MB 3.3 V
Fig 4.
Connecting jumper J11 pin 2 and pin 3 to select USB as power supply