Table 1: xPico Wi-Fi Embedded Device Server Components

Component

Description

xPico Serial Number

Also the module MAC Address. The last six digits are used in the

 

default SSID for Soft AP mode.

u.FL Socket

Used to connect either the SMA antenna cable or the alternative

 

PCB strip antenna to the xPico Wi-Fi Module.

SMA

If using External antenna attach at this point.

SW3

Power switch, turns power on and off to the Evaluation PCB.

J5

Mini-USB socket used for connecting power to the Evaluation Kit or

 

to connect to the xPico module serial port 2 via an on-board USB to

 

serial converter

JP19 (pin 1 +, pin 2 GND)

Battery Port (2.2 to 5.5V) provides power to the xPico Wi-Fi Module

 

via on board DC to DC converter.

J3

DB9 for Serial Port 1

JP11 and JP12

Leave JP11 and JP12 open for RS232 mode on serial port 1. Install

 

jumper on JP11 for RS422 (4-wire) mode. Install JP11 and JP12 for

 

RS485 (2 wire mode)

JP17

Serial Port 1 break-out header. Leave jumpers installed to route

 

module signals to J3 DB9 serial port

JP18

Serial Port 2 RS232 header. Pin 1 TX(out), pin 2 GND, pin 3 RX(in)

JP8 and JP9

Jumpers for serial port 2 selection, install positions 1 to 2 to route

 

serial port 2 to JP18 RS232 port. Install positions 2 to 3 to route

 

serial port 2 to J5 USB to serial converter port.

J6

USB device port (xPico Wi-Fi only)

J2

RJ45 Ethernet Socket. This is not used with the xPico Wi-Fi module,

 

it can be used if a xPico serial to Ethernet Device Server module is

 

used in place of the xPico Wi-Fi

JP14, JP15

Voltage test pins. Monitor only. JP14 is 3.3V and JP15 is Ground

Connecting an xPico Wi-Fi Device

Connecting Power to the xPico Wi-Fi Evaluation Module

There are five methods of providing power to the Evaluation Kit PCB. Use one of the methods below.

1.Connect the provided universal power supply with mini-USB connector to J5.

2.Connect the USB to serial converter port J5 to a PC USB host port

3.Connect the USB device port J6 to a PC USB Host Port (xPico Wi-Fi only)

4.Connect a battery pack or external power supply (2.2V to 5.5V) between JP19 pin 1

(+) and JP19 pin 2 (-)

5.Connect Ethernet Port to a Power over Ethernet complaint PSE source (xPico module only)

xPico™ Wi-Fi® Embedded Device Server Evaluation Kit Quick Start Guide

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Lantronix 900-685 quick start Connecting an xPico Wi-Fi Device, Connecting Power to the xPico Wi-Fi Evaluation Module