The information in this document is subject to change without notice
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Rev 1.0 Dec 2020
5.5.
Reset Sources
Both the nRF52840 and nRF9160 devices logic low asserted reset signal in the AVT9152 module has their
own reset sources.
Reset sources for nRF52840 device are the following:
•
Reset button S1
•
J-link debug connector J4
•
nRF9160 device GPIO pin P0.27 within the AVT9152 module
Reset sources for nRF9160 device are the following:
•
Reset button S2
•
J-link debug connector J5
•
nRF52840 device GPIO pin P0.13 within the AVT9152 module
5.6.
Antenna and RF connection
The AVT9152 evaluation kit provides option for the LTE-M antenna to be connected through either the SMA
connector P3 or µ.FL connector P4. This option is made through J16 jumper connection.
J16 Jumper Setting
LTE-M Antenna
J16:1-2 ON
Select SMA antenna.
J16:2-3 ON
Select µ.FL antenna.
Table 6: LTE-M Antenna Jumper
A blade LTE-M SMA antenna has been provided as part of the accessories of the kit for connection to
connector P3. The P4 µ.FL connector RF path has been specifically matched to the Taoglas LTE-M flex
antenna (FXUB64.18.0150A).
The GPS antenna in the AVT9152 evaluation kit is provided through the µ.FL connector J1 located in the
AVT9152 module. This J1 connector supports both passive and active type of GPS antenna where +3V is
supplied. The passive or active type selection is made through nRF9160 device firmware through AT
Command.
The evaluation kit comes with an active GPS ceramic patch antenna from Taoglas
(AP.10F.07.0039B).
The 2.4 GHz BLE antenna is already provided in the AVT9152 module through the mounted ceramic
antenna A1. Please refer to the AVT9152 module datasheets for the antenna radiation pattern.
