LoRaGo PORT – SX1301/SX1308 Based LoRaWAN Concentrator Module

Contents

1 Overview
2 Features
3 Pin Configuration
4 Absolute Maximum Ratings
5 Electrical Characteristics
6 RF Performance Data
7 Typical Application with Raspberry Pi
8 Resources
9 Assembly Drawings
10 Dimensions

Overview

This product has an SX1301/SX1308 baseband processor and two SX1257/SX1255 RF frontend chips, and peripheral circuits onboard. and it could listen on multiple channels and decode packets sent with different LoRa spreading factors simultaneously. This concentrator module is supposed to connect to a host controller via SPI interface. A host controller could either be an MCU with an SPI interface or a PC with a USB to SPI converter located between the concentrator and PC. All the RF jobs are done within this concentrator module and the user could focus on high-level software development. HAL source files are provided by Semtech who is the manufacturer of the baseband processor.

Features

4V-12V wide range supply voltage
+-1ppm TCXO
Compact size 70mm x 34mm
50ohm RF port
ESD protected digital IO
Plug and play design for Raspberry Pi

Pin Configuration

LoRaGo_Port_Pinout

Pin No.	Pin Name	Pin Type	Description
1	GND	Power	Power ground.
2	+VIN	Power	Power supply.
3	SDA	Open Drain	SDA of the onboard 24AA02E64T EEPROM chip. Could be left unconnected if not used.
4	+VIN	Power	Power supply.
5	SCL	Open Drain	SCL of the onboard 24AA02E64T EEPROM chip. Could be left unconnected if not used.
6	GND	Power	Power ground.
7	SCK	Input	SCK of the SPI interface.
8	PSEN	Input	Power supply enable pin, active HIGH, internally pulled-up. A LOW voltage on this pin disable the power converters onboard. Could be left unconnected if not used.
9	GND	Power	Power ground.
10	GND	Power	Power ground.
11	MISO	Output	MISO of the SPI interface.
12	RESET	Input	Baseband processor reset pin. Active HIGH.
13	GND	Power	Power ground.
14	GND	Power	Power ground.
15	MOSI	Input	MOSI of the SPI interface.
16	SYSPG	Open Drain	System power good pin. This pin is internally pulled-up. A HIGH level indicates that the onboard power converters are working well, while a LOW level indicates that there is something wrong with the onboard power converters. This pin could be left unconnected if not used.
17	GND	Power	Power ground.
18	GND	Power	Power ground.
19	#CS	Input	#CS pin of the SPI interface. Active LOW.
20	GND	Power	Power ground.
21	IO0	IO	GPIO0 of the baseband processor.
22	GND	Power	Power ground.
23	IO1	IO	GPIO1 of the baseband processor.
24	GND	Power	Power ground.
25	IO2	IO	GPIO2 of the baseband processor.
26	GND	Power	Power ground.
27	IO3	IO	GPIO3 of the baseband processor.
28	GND	Power	Power ground.
29	IO4	IO	GPIO4 of the baseband processor.
30	NC	NC	Not used.

u.fl Connector 1: Pulse Per Second input to connect to external GPS
u.fl Connector 2: RF signal port

Absolute Maximum Ratings

Parameter	Min.	Max.	Unit
Supply Voltage(+VIN)	-0.3	12.5	V
IO Pin Voltage	-0.3	3.6	V
Operating Temperature	–	75	Celsius

Electrical Characteristics

T=25C, +VIN=5V, unless otherwise specified

Parameter	Condition	Min.	Typ.	Max.	Unit
Operating Supply Voltage	–	4.0	5.0	12V	V
Current Consumption	All channels active, radio A ON, radio B ON, receiving mode	–	370	420	mA
Current Consumption	Continous wave transmitting at 20dBm	–	195	210	mA
Logic low input threshold	–	0.4	–	–	V
Logic high input threshold	–	–	–	2.9	V
Logic low output level	–	0	–	0.4	V
Logic high output level	–	3.9	–	3.3	V