EVK-G31, EVK-G35 - User Guide
UBX-13001792 - R06
Early Production Information
Starting up
Page 5 of 22
1.2
EVK-G3x block diagram
Figure 2 shows the main interfaces and internal connections of the EVK-G3x:
SIM
card holder
(J300)
Reset
(SW303)
Power-on
(SW302)
Cellular adapter board
SARA-G3
module
42
-p
in
D
IL
B
2B
c
o
n
n
ec
to
r
(J
40
1)
42
-p
in
D
IL
B
2B
c
o
n
n
ec
to
r
(J
40
0)
EVB-WL3
GNSS
module
GNSS adapter board
RF
USB
UART / UART AUX
converter
Cellular USB
(UART / UART AUX)
(J501)
Cellular RS232
(UART)
(J500)
RS232
UART
converter
UART
MiniUSB/DB9
switch
(SW403)
On-Board/B2B
switch
(SW401)
USB
Headset jack
(J303)
I
2
C
Cellular
antenna
(J100)
Step - Down
Main power switch
(SW400)
12 V
(J400)
3.8 V
VCC jumper
(J404)
LDO
GPIO2/3/4
GNSS switch
(SW304)
UART AUX
UART AUX switch
(SW510)
Figure 2: EVK-G3x block diagram
The EVK-G3x is formed by three boards:
The lower one, called EVB-WL3, contains the power supply and other peripherals for the SARA-G series
cellular module (SIM card holder, reset button and power-on button).
The cellular adapter board, called ADP-G310 or ADP-G350, contains the SARA-G310 or the SARA-G350
cellular module, the cellular antenna connector.
The GNSS adapter board, called ADP-GNSS, contains the u-blox GNSS module, the LDO supply regulator,
the GNSS antenna connector, and the USB connector for the GNSS module
The boards are connected by means of male header board-to-board connectors mounted on the bottom side of
the adapter boards and their corresponding female connectors mounted on the top side of the EVB-WL3 board.
The cellular module’s interfaces are accessible on the Dual-In-Line male header connectors mounted on the top
side of the cellular adapter board (J400, J401), providing the same pin-out of the corresponding connectors
mounted on the adapter board’s bottom side and the corresponding ones mounted on the EVB-WL3 board’s top
side.
1.3
Switches, jumpers and buttons
Function
Description
Name
Board
Main Power Switch
Switch to power on / off the whole evaluation kit
SW400
EVB
Cellular VCC
Jumper socket to provide the 3.8 V supply to the cellular module VCC input
J404
EVB
Cellular Power-on
Push button to switch-on the cellular module
SW302
EVB
Cellular Reset
Push button to reset the cellular module
SW303
EVB
Cellular UART detach
Slide switch to attach / detach cellular module UART from USB and RS232 connectors:
when detached, UART signals available only on the DIL B2B connector on ADP board
SW401
EVB
Cellular UART routing
Slide switch to select cellular module UART routing on USB or on RS232 connector
SW403
EVB
Cellular UART AUX detach Slide switch to attach / detach cellular module UART AUX from USB connector: when
detached, UART AUX signals available only on the DIL B2B connector on ADP board
SW510
EVB
Cellular GPIO detach
Slide switch to attach / detach the cellular module GPIOs, SIM_DET from peripherals:
when detached, the signals are available only on the DIL B2B connector on ADP board
SW300
EVB
Cellular GNSS detach
Slide switch to attach / detach the cellular module to the GNSS module (GPIO2-3-4):
when detached, the signals are available only on DIL B2B connector on ADP board
SW304
EVB
GNSS V_BCKP
Slide switch to connect / disconnect backup battery to V_BCKP pin of GNSS module
SW204
EVB
Table 1: EVK-G3x switches and buttons description
