Chapter 2
Jumpers
Jumper
J1
J3
Name
Battery Enable
VLIO select
Description
Supplies the real time clock with 3V
backup power from the battery
(lithium coin cell battery, G1) if the
board is switched off.
Select VLIO power source (+3.3V or
VEXT JT)
Settings
Closed =
Backup battery enabled
Open = Backup battery disabled
Pin2-3 closed VLIO = on board 3.3V
Pin1-2 closed VLIO = power
connected to J10
J4
J5
J6
J7
J9
J10
Port C/D select
RTS2/TXD3
User LED1
User LED2
Port C/D select
CTS2/RXD3
WLAN_DISABLE#
VEXT
Select RTS2 PortC or TXD3 PortD
User LED1 enable / disable
User LED2 enable / disable
Select CTS2 PortC or RXD3 Port D
Disables the WLAN interface on the
module (if present)
External power
Pin1-2 closed= RTS2
Pin2-3 closed =TXD3
Closed = User LED1 enabled
Closed = UserLED2 enabled
Pin1-2 closed = CTS2
Pin2-3 closed = RXD3
Closed = WLAN disabled
Open = WLAN enabled
Connector for external accumulator.
Pin1 = GND Pin2 = VLIO
J13
Debug LED
Debug LED enable / disable
Closed = Debug LED enabled
Open = Debug LED disabled
101
ConnectCore 9M 2443 & Wi-9M 2443 Hardware Reference
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