EVK-R8 - User guide
UBX-22018774 - R01
Starting up
Page 6 of 20
C1-Public
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No position (no jumper socket on J601): main 8-wire UART interface or main 4-wire UART with
auxiliary 4-wire UART interfaces, routed to the dual-in-line male header connectors mounted on
the top of the adapter board ADP-R8, allowing a connection to an external compatible device with
the on-board / B2B switch (SW401) on the EVB-
WL3 board set to “B2B”
.
J601 pin 1
J601 pin 3
Figure 3: 3-pin header J601 available to set the routing of the UART interfaces
The other peripherals of the cellular module are available on the dual-in-line male header connectors
(J402 / J403) on the top layer of the cellular adapter board ADP-R8.
The lower board is compatible with other u-blox cellular adapter boards. It contains additional
switches, jumpers, connectors, LEDs and parts that are partially described in
document, because they are intended for use only with other u-blox cellular modules. It is
recommended to leave any additional connector unconnected, and to leave any additional switch in
its default configuration.
1.3
Switches, jumpers and buttons
Function
Description
Name
Board
Main power switch
Power on / off the whole evaluation kit
SW400 EVB
Cellular VCC
Jumper socket to provide the 3.8 V supply to the cellular VCC input
J404
EVB
Cellular power-on
Push button to switch-on the cellular system of LENA-R8
SW302 EVB
Cellular reset
Push button to reset the cellular system of LENA-R8
SW303 EVB
Cellular UART detach
Slide switch to attach / detach cellular UART from USB / RS232 connectors:
when detached, UART signals available only on DIL B2B connector on ADP board
SW401 EVB
Cellular UART routing
Slide switch to select cellular main UART routing on USB or on RS232 connector
SW403 EVB
Cellular GPIO detach
Slide switch to attach / detach the cellular GPIOs from peripherals: when detached,
the signals are available only on the DIL B2B connector on ADP-R8 board
SW300 EVB
Cellular GNSS detach
Slide switch to attach / detach the cellular system of LENA-R8 to the GNSS module
mounted on the ADP-GNSS: when detached, signals are available only on DIL B2B
connector on ADP-R8 board
SW304 EVB
GNSS V_BCKP
Slide switch to connect / disconnect backup battery to V_BCKP pin of the GNSS
module mounted on the ADP-GNSS
SW204 EVB
Cellular VCC
Jumper socket to provide the 3.8 V supply to the cellular VCC input
J102
ADP-R8
Cellular UARTs routing Jumper to route cellular UART interfaces to the USB two UARTs connector on the
ADP-R8 (both Main and Auxiliary UART) or to lower EVB-WL3 motherboard by
means of Dual-In-Line male Board-to-Board connectors (only Main UART)
J601
ADP-R8
Cellular USB boot
Slide switch to select cellular system boot mode: normal operating boot mode or
USB boot mode for FW update
J200
ADP-R8
VCC_GNSS enable
Jumper socket to enable 1.8 V supply to VCC_GNSS input of LENA-R8001M10
J701
ADP-R8
VBCKP_GNSS enable
Jumper socket to enable 1.8 V supply to VBCKP_GNSS input of LENA-R8001M10 J702
ADP-R8
Table 1: EVK-R8 switch and button descriptions
