User's Manual
Table Of Contents
- Low-Power Long Range (LoRa®) Technology Gateway Module for US (LG9271) and EU (LG8271)
- 1.0 Device Overview
- 2.0 General Specifications
- TABLE 2-1: General Specification
- TABLE 2-2: Electrical Characteristics
- TABLE 2-3: RF Receiver Characteristics
- TABLE 2-4: LoRa Technology Data Rate (bps) and Sensitivity versus Spreading Factor (SF)
- TABLE 2-5: CURRENT CONSUMPTION (3.3V)
- TABLE 2-6: Module Dimensions
- TABLE 2-7: RF OUTPUT POWER (dBm) versus TX POWER SETTING (nominal)
- 3.0 Typical Hardware Connections
- 4.0 Application Information
- 5.0 Regulatory Approval
- Appendix A: Revision History
- Worldwide Sales and Service
LG8271/LG9271
DS00000000A-page 4 Preliminary 2017 Microchip Technology Inc.
FIGURE 1-3: BLOCK DIAGRAM
Table 1-1 describes the pins of the module.
PIC24FJ128GB204
LoRaBaseband
Semtech
SX1301
RFESX1257
RFESX1257
UART
SPI
I/Q
I/Q
Debug
RF
Switch,
PA/
LNA
RFE,etc.
24LC08B
EEPROM
TABLE 1-1: PIN DESCRIPTION
Pin Symbol Type Description
1 NC — Not Connected
2 VDD Power Positive Supply Terminal
3 HOST_INT Output Interrupt to the Host CPU
4 GND Power Ground Supply Terminal
5 PPS Input GPS PPS Input signal
6 NC — Not Connected
7 NC — Not Connected
8 NC — Not Connected
9 GND Power Ground Supply Terminal
10 NC — Not Connected
11 NC — Not Connected
12 NC — Not Connected
13 NC — Not Connected
14 NC — Not Connected
15 GND Power Ground Supply Terminal
16 NC — Not Connected
17 HOST_URX Input Module UART Receive
18 GND Power Ground Supply Terminal
19 HOST_UTX Output Module UART Transmit
20 RF_ENABLE Input RF Enable Input
21 GND Power Ground Supply Terminal
22 RESET Input Reset Module
23 NC — Not Connected
24 VDD Power Positive Supply Terminal
25 NC — Not Connected
26 GND Power Ground Supply Terminal
27 GND Power Ground Supply Terminal
28 NC — Not Connected