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 12 Preliminary 2017 Microchip Technology Inc.
3.6 PCI_DETECT
The LG8271/LG9271 modules have an input signal
used to select the active host interface. The signal is
sampled at module start up and the selected interface
is initialized and configured. A LOW signal on this line
at start up selects the SPI interface (unsupported). A
HIGH signal on this line selects the UART interface.
3.7 LED OUTPUTS
The LG8271/LG9271 modules have three buffered
outputs that can sink sufficient current to activate off
board LEDs. These signals are entirely controlled by
commands from the host MCU. Refer to the “LoRa
®
Technology Gateway Module Software Specifications”
for details regarding the commands used to activate
these signals.
3.8 HOST INTERRUPT
The LG8271/LG9271 modules have an output signal
that can be used to provide an interrupt to a host MCU.
This feature is currently implemented.