Ublox SARA-R5 Series, User Manual, Page: 6 / 23

EVK-R5 - User guide
UBX-19042592 - R06 Starting up Page 6 of 23
C1-Public
The lower board (EVB-WL3) is also designed to be used with other u-blox cellular adapter boards. It
contains additional switches, jumpers, connectors, LEDs and parts that may be only partially
described in
Figure 1 or in this document, because they are intended for use only with other u-blox
cellular modules. It is recommended to leave any additional connector unconnected and any additional
switch in its default configuration.
1.3 Switches, jumpers and buttons
Function
Description
Name
Board
Main power switch Power on / off of the whole evaluation kit SW400 EVB-WL3
Cellular VCC jumper Jumper socket to provide the 3.8 V supply to the cellular module VCC input J404 EVB-WL3
J109 ADP-R5
Cellular power on Push button to switch on / off the cellular module SW302 EVB-WL3
Cellular reset Push button to reset the cellular module SW303 EVB-WL3
Cellular UART detach Slide switch to attach / detach the cellular module single UART from the
USB / RS232 connectors on EVB-WL3 SW401 EVB-WL3
Cellular UART routing Slide switch to select cellular module single UART routing on the USB or
RS232 connector on EVB-WL3 SW403 EVB-WL3
Cellular GPIO detach
Slide switch to attach / detach the cellular module GPIOs from peripherals:
when detached, the signals are available only on the DIL B2B connector on the
ADP board
SW300 EVB-WL3
Cellular GNSS detach 2 Slide switch to attach / detach the cellular module to / from the GNSS module
(GPIO2-3-4): when detached, the signals are available only on the DIL B2B
connector on the ADP board
SW304 EVB-WL3
GNSS V_BCKP
Slide switch to connect / disconnect backup battery to / from the V_BCKP pin
of the GNSS module
SW204 EVB-WL3
Table 1: EVK-R5 switch and button descriptions
2 For EVK-R510M8S it is recommended to keep this switch in “detach” position.