User's Manual

Description
2 Description
2.1 SX1302 Module
The SX1302 is a new generation of baseband LoRa
®
chip for gateways. It excels
in reducing current consumption, simplifies the thermal design of gateways and
it is capable of handling a higher amount of traffic than preceding devices.
Main features:
• RF standard supported: LoRaWAN
®
• Frequency band: 868 MHz, 915MHz
• libloragw is the driver of the SX1302, that provides API for LoRa
®
packet
exchange using the SX1302 (developed by Semtech, customized and
ported by Embit
®
to this specific platform).
• packet_forwarder is the application that allows the exchange of
LoRaWAN
®
packet with a LoRaWAN
®
server. It forwards RF packets
received by the gateway to a server through an IP/UDP link, and emits RF
packets that are sent by the server.
• Sample Projects:
◦ Semtech source code available SX1302-Hal
◦ helper programs: util_pkt_logger, util_spi_stress, util_tx_test,
util_tx_continuous
2.2 SX1250 Module
The two SX1250 [2] are a half-duplex sub-1 GHz RF to IQ transceiver designed
to work along with Semtech’s SX1302 baseband engine, to design a high-
performing LoRaWAN
®
gateway.
The SX1250 is capable of low power operation in the 150-960 MHz ISM
frequency bands. It has a maximum signal bandwidth of 500 kHz both in
transmission and reception.
The SX1250 transceiver is controlled by its companion baseband chip SX1302
through an SPI interface.
2.3 Crypto Element
The Crypto element is a high-security cryptographic device which combines
world-class hardware-based key storage with hardware cryptographic
accelerators to implement various authentication and encryption protocols.
The includes an EEPROM array which can be used for storage of up to 16 keys,
certificates, miscellaneous read/write, secret data, and security configurations.
Access to the various sections of memory can be restricted in a variety of ways
and then the configuration can be locked to prevent changes.
User Manual EMB-LR1302-mPCIe Page 5 of 14