UMTS&LTE EVBUser GuideUMTS/HSPA/LTE Module SeriesRev: UMTS&LTE_EVB_User_Guide_V1.0Date: 2015-03-03www.quectel.com

Quectel UC20 User Manual

About the Document

Introduction

Safety Information

Product Concept

FCC Statement

TABLE 2: UC20 KEY FEATURES

Functional Diagram

Evaluation Board

Application Interface

Pin Assignment

Pin Description

Operating Modes

UART Application

USB Application without Suspend Function

Airplane Mode

Power Supply

Reference Design for Power Supply

Monitor the Power Supply

FIGURE 9: TURN ON THE MODULE USING KEYSTROKE

Turn off Module

Turn off Module Using AT Command

Reset the Module

FIGURE 12: REFERENCE CIRCUIT OF RESET_N BY USING DRIVING CIRCUIT

RTC Backup

UART Interface

TABLE 10: PIN DEFINITION OF THE DEBUG UART INTERFACE

FIGURE 18: REFERENCE CIRCUIT WITH TRANSLATOR CHIP

FIGURE 20: RS232 LEVEL MATCH CIRCUIT

USIM Card Interface

FIGURE 23: REFERENCE CIRCUIT OF THE 6 PIN USIM CARD

Design Considerations for USIM Connector

TABLE 14: PIN DESCRIPTION OF AMPHENOL USIM CONNECTOR

USB Interface

PCM and I2C Interface

FIGURE 28: PRIMARY MODE TIMING

TABLE 16: PIN DEFINITION OF PCM AND I2C INTERFACE

ADC Function

Network Status Indication

Operating Status Indication

SLEEP_IND

Behavior of the RI

GNSS Receiver

GNSS Performance

Layout Guideline

Antenna Interface

GNSS Antenna Interface

Reference Design for Passive Antenna

Reference Design for Active Antenna

Install the Antenna with RF Connector

FIGURE 38: MECHANICALS OF UF.L-LP CONNECTORS

Absolute Maximum Ratings

Power Supply Ratings

TABLE 33: THE MODULE CURRENT CONSUMPTION

RF Output Power

TABLE 36: ELECTROSTATICS DISCHARGE CHARACTERISTICS

Mechanical Dimensions

FIGURE 41: UC20 BOTTOM DIMENSIONS (BOTTOM VIEW)

FIGURE 42: BOTTOM PADS DIMENSIONS (BOTTOM VIEW)

Footprint of Recommendation

Top View of the Module

Storage and Manufacturing

Packaging

FIGURE 47: CARRIER TAPE

Appendix A Reference

UC20

Table Index

Application Mode

Procedure for PPP Setup

Recommended Procedure for PPP Setup

UART/USB for PPP Connection

Switch from Command Mode to Data Mode

Handle URC in Data Mode

PPP Dial-up in Windows

FIGURE 4: PHONE AND MODEM OPTIONS

FIGURE 5: ADD A NEW MODEM

FIGURE 6: SELECT MODEL OF THE MODEM

Configure the Modem Driver

FIGURE 9: CONFIGURE THE MODEM DRIVER

Dial-up Network Configuration

Configure the Connection

Configure the Dial-up Tool

Establish the Dial-up Connection

FIGURE 14: ESTABLISH THE DIAL-UP CONNECTION

PPP Dial-up in Linux

Set up PPP Connection by PPPD

General Overview

System Overview

EVB View

FIGURE 3: EVB ACCESSORIES

Interface Application

USB Device Interface

Audio Interface

Loud Speaker (J402)

TABLE 5: PIN ASSIGNMENT OF J404

Handset (J401)

SIM Card Interface

TABLE 7: PIN ASSIGNMENT OF J502

Switch and Buttons

Status LEDs

Test Points

Operation of UMTS Module

Power Off UC20-TE-A and UC20 Mini PCIe

Communication via UART Interface

UC20 EVB Accessories Assembly

Appendix Reference