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V2.7 2017-09-28
www.risinghf.com
ST Nucleo LoRa GW User Guide
RisingHF
5
PE14-MOSI
MOSI of SPI for SX1301
PE15-RST
Reset for SX1301
PD15-Band Set1
ST Nucleo LoRa GW LF
PE9=0, PD15=1: Band EU433
PE9=1, PD15=0: Band CN470
ST Nucleo LoRa GW HF
PE9=0, PD15=1: Band EU868
PE9=1, PD15=0: Band US915/AS915/AU915
PE9-Band Set2
PA5-SCK (opt)
Backup SCK of SPI for SX1301 (NO connection on board in default)
PA6-MISO (opt)
Backup MISO of SPI for SX1301 (NO connection on board in default)
PA7/PB5-MOSI (opt)
Backup MOSI of SPI for SX1301 (NO connection on board in default)
PD14-CSN(opt)
Backup CSN of SPI for SX1301 (NO connection on board in default)
3.2.2 HW architecture of ST Nucleo LoRa GW Module
The Module is composed of one pcs of SX1301 and two pcs of SX125x FEM. The SX1301 will be
controlled and configured by ST Nucleo-F746ZG board via SPI. In this module, the external PA is
removed refer to Semtech’s reference design. The maximum output power will decrease to be about
6dBm for downlink. To get a wider operation bandwidth for evaluation, two parallel SAWs will be used
instead of the single band SAW. Two RF switches are used to select the target band which would be
used in the application. And the band selection is done automatically by software with frequency
channel identification. Users no need to set it by manual.