User's Guide

LE920A4 HW User Guide General Product Description
Doc#: 1VV0301261 General Functionality and Main Features
Rev. 4.7.1 Page 14 of 124 2019-11-21
Function Features
Interfaces Rich set of interfaces, including:
 SD/MMC Card Interface supporting SD3.0 standard
 SDIO for external WiFi transceiver supporting SDIO3.0
standard
 SGMII for external Ethernet transceiver (optional)
o Compliant with IEEE802.3
o Full duplex operation at 1 Gbps
o Half/full duplex operation at 10/100 Mbps
o Support for VLAN tagging
o Support for IEEE1588, PTP (Precision Time Protocol)
 USB2.0 – USB port is typically used for:
o Flashing of firmware and module configuration
o Production testing
o Accessing the Application Processor’s file system
o AT command access
o High-speed WWAN access to external host
o Diagnostic monitoring and debugging
o Communication between Java application environment
and an external host CPU
o NMEA data to an external host CPU
 HSIC (Optional)
o High-speed 480 Mbps (240 MHz DDR) USB transfers are
100% host driver compatible with traditional USB cable
connected topologies
o Bidirectional data strobe signal (STROBE)
o Bidirectional data signal (DATA)
o No power consumption unless a transfer is in progress
o Maximum trace length 10 cm
o Signals driven at 1.2V standard LVCMOS levels
 Peripheral Ports – SPI, I2C, UART
 GPIOs
 Analog audio I/F
 Antenna ports