EVK-R8 - User guide
UBX-22018774 - R02
EVK-R8 HW
Page 16 of 25
C1-Public
5.2
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 3: EVK-R8 switch and button descriptions
Cell power on - SW302
Cell reset- SW303
Cell GPIO detach - SW300
Cell UART detach - SW401
Cell UART routing - SW403
Cell GNSS detach -SW304
GNSS VBCKP - SW204
Main power - SW400
J101
J100
J300
SW400
J400
NO
R
M
A
L
→
U
S
B
B
O
O
T
USB / NORMAL BOOT - J200
J500
J502
J501
J600
J700
J102
VBKP_GNSS_1V8
J702
J701
EVB_UART_N
GND
ADP_UART_N
J601
J402
(J401 on bottom side)
J403
(J400 on bottom side)
VCC_GNSS
J500
J501
OFF
B2B
DB9
UART0
D
E
T
A
CH
BATT
DISABLE
DL401
DL400
J404
VCC_MOD
VCC_GNSS_1V8
VCC_INT_MOD
DL403
DL501
D
L
4
0
4
LED700
LED600
DL405
DS501
DS500
D
S
1
0
7
D
S
1
0
5
D
S
1
0
9
D
S
1
0
3
GPIO
ONBOARD
MINIUSB
G
N
S
S
B
K
P
L
ED
7
0
1
Cellular VCC - J404
J402
J403
J405
J406
J401
J407
VCC_GNSS enable
–
J701
VBCKP_GNSS enable
–
J702
VCC_GNSS
Cell VCC
–
J102
Cell UARTs routing - J601
J103
D
S
1
1
8
D
S
1
2
1
D
S
1
0
7
D
S
1
0
4
J102
