lantronix PW2050 User Manual

PW2050

Embedded Device Server

Integration Guide

Part Number 900-731-R

Revision A.2 October 2015

Intellectual Property

© 2015 Lantronix, Inc. All rights reserved. No part of the contents of this publication may be
transmitted or reproduced in any form or by any means without the written permission of
Lantronix.

Lantronix is a registered trademark of Lantronix, Inc. in the United States and other countries.
Patented: patents.lantronix.com
Windows is a registered trademark of Microsoft Corporation. Wi-Fi is a registered trademark of

Wi-Fi Alliance Corporation. Ethertronics is a trademark of Ethertronics, Inc. Wanshih is a
trademark of Wanshih Electronic Co., Ltd. Exar is a trademark of Exar Corporation.
SEMTECH is a trademark of Semtech Corporation. All other trademarks and trade names are
the property of their respective holders.

Contacts

Lantronix, Inc.

7535 Irvine Center Drive, Suite 100
Irvine, CA 92618, USA
Toll Free: 800-526-8766
Phone: [phone]
Fax: [phone]

Technical Support
Online: www.lantronix.com/support

Sales Offices
For a current list of our domestic and international sales offices, go to the Lantronix web site at

www.lantronix.com/about/contact

; Additional patents pending.

Disclaimer

All information contained herein is provided “AS IS.” Lantronix undertakes no obligation to
update the information in this publication. Lantronix does not make, and specifically disclaims,
all warranties of any kind (express, implied or otherwise) regarding title, non-infringement,
fitness, quality, accuracy, completeness, usefulness, suitability or performance of the
information provided herein. Lantronix shall have no liability whatsoever to any user for any
damages, losses and causes of action (whether in contract or in tort or otherwise) in
connection with the user’s access or usage of any of the information or content contained
herein. The information and specifications contained in this document are subject to change
without notice.

This equipment has to be tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. However, there is
no guarantee that interference will not occur in a particular installation.

PW2050 Embedded Device Server Integration Guide 2

If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one of the following measures:

1. Reorient or relocate the receiving antenna.

2. Increase the separation between the equipment and receiver.

3. Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.

4. Consult the dealer or an experienced radio/TV technician for help.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause undesired operation.

This device is intended only for OEM Integrators. The OEM integrator should be aware of the
following important considerations.

Labeling of the End Product

The label on the end product incorporating the PW2050 module must clearly state that it
contains an FCC-approved RF module. Canada and Japan also require a similar statement.

For example, “This product contains RF transmitter ID # (put FCC, IC, and/or Japan module
grant numbers here).” The label must include the ID numbers for the regions where the end
product is installed. The grant numbers are below.

♦ PW2050 FCC ID number: R68PW2050

♦ PW2050 IC ID number: 3867A-PW2050

♦ PW2050 Japan ID numbers: TBD

RSS-GEN Sections 7.1.4 and 7.1.5 Statement for Devices with Detachable Antennas

This device has been designed to operate with the antennas listed in the Certificate, and
having a maximum gain of 5.5 dBi. Antennas not included in this list or having a gain greater
than 5.5 dBi are strictly prohibited for use with this device, unless system level approval is
gained. The required antenna impedance is 50 ohms.

To reduce potential radio interference to other users, the antenna type and its gain should be
so chosen that the equivalent isotropically radiated power (EIRP) is not more than that
required for successful communication.

Integration Notes

This module is to be authorized under limited module approval specified to mobile host
equipment. So, the antenna must be installed such that 20cm is maintained between the
antenna and users.

The transmitter module may not be co-located with any other transmitter or antenna.
As long as the two conditions above are met, further transmitter testing will not be required.

However, the OEM integrator is still responsible for testing their end product for any additional
compliance requirements required with this module installed (for example, digital device
emission, PC peripheral requirements, etc.)

PW2050 Embedded Device Server Integration Guide 3

In the event that these conditions cannot be met (for example certain laptop configurations,
general purpose PCMCIA or similar cards, or co-location with another transmitter) and
obtaining a separate FCC authorization will be required, then the FCC authorization is no
longer considered valid and the FCC ID cannot be used on the final product (including the
transmitter).

Changes or modifications to this device not explicitly approved by Lantronix will void the user's
authority to operate this device.

Note: With the purchase of any PW2050 family produc t, the OEM ag rees to an OEM

firmware license agreement that grants the OEM a non-exclusive, royalty-free firmware
license to use and distribute the binary firm w are imag e provided, only to the extent
necessary to use the PW2050 hardware. For further details, please see the PW2050
OEM firmware license agreement.

Note: Please refer to the PW2050 Data Sheet for the full compliance specification and

requirements.

Warranty

For details on the Lantronix warranty policy, please go to our Web site at

www.lantronix.com/support/warranty

.

Revision History

Date Rev. Comments

October 2015 A.2 Preliminary draft.

For the latest revision of this product document, please check our online documentation at

www.lantronix.com/support/documentation

.

PW2050 Embedded Device Server Integration Guide 4

Table of Contents

Intellectual Property ________________________________________________________ 2
Contacts _________________________________________________________________ 2
Disclaimer _______________________ ___________ _____________ ____________ _____ 2
Warranty _____________________ ______________________________ ______________ 4
Revision History ___________________________________________________________ 4
List of Figures _____________________________________________________________ 6
List of Tables _____________________________________________________________ 6

1: Introduction 7

About the Integration Guide __________________________________________________ 7
Additional Documentation____________________________________________________ 8

2: Functional Description 9

PW2050 Features _________________________________________________________ 9
Signal Descriptions _______________________________________________________ 111
Antenna Interface ________________________________________________________ 155
Antenna Placement ______________________________________________________ 177
Using the RF1 Signal Pin __________________________________________________ 188
Serial Interface ___________________________________________________________ 18
Ethernet Interface _________________________________________________________ 19
USB Device Port _________________________________________________________ 21
USB Host Port ___________________________________________________________ 21
LEDs ___________________________________________________________________ 22
General Purpose I/O Pins__________________________________________________ 233
Reset Pins ______________________________________________________________ 23



3: PCB Footprint and Module Dimensions 24

To Access CAD Files ___________________________________________________ 24
Solder Profile and Wash Instructions __________________________________________ 26
Product Information Label __________________________________________________ 28
Evaluation Board Schematic ________________________________________________ 29
Federal Communication Commission Interference Statement
Industry Canada statement
Europe – EU Declaration of Conformity



PW2050 Embedded Device Server Integration Guide 5

30
31
34

List of Figures

Figure 2-1 PW2050 Dimensions and Views ____________________________________ 10
Figure 2-2 PW2050 Wi-Fi SMT Pin Locations ___________________________________ 15
Figure 2-3 Reverse-SMA to U.FL (Long) (Lantronix Part Number 500-180-R-ACC) _____ 16
Figure 2-4 U.FL to U.FL Cable (Lantronix Part Number 500-181-R-ACC) _____________ 17
Figure 2-5 Reverse-SMA to U.FL (short) (Lantronix Part Number 500-182-R-ACC) _____ 17
Figure 2-6 Module with Chip Antenna Board Edge Mounting _______________________ 18
Figure 3-1 PW2050 Module Dimensions ______________________________________ 255
Figure 3-2 PW2050 Recommended Footprint ___________________________________ 26
Figure 3-3 Recommended Reflow Profile ______________________________________ 27
Figure 3-4 PW2050 Product Label ____________________________________________ 28



List of Tables

Table 1-1 PW2050 Integration Guide Sections ___________________________________ 7
Table 2-1 PW2050 Part Numbers _____________________________________________ 9
Table 2-2 PW2050 Wi-Fi SMT PCB Interface Signals____________________________ 111
Table 2-3 PW2050 Wi-Fi On Module Antenna _________________________________ 155
Table 2-4 PW2050 Wi-Fi External Antenna Options via On Module U.FL ____________ 166
Table 2-5 PW2050 Serial Port Signals ________________________________________ 19
Table 2-6 Example RS232 Connections (Serial Transceiver Required) _______________ 19
Table 2-7 Example RS422/485 Connections (Serial Transceiver Required) ____________ 19
Table 2-8 Ethernet Port Signals _____________________________________________ 20
Table 2-9 USB Device Port Signals ___________________________________________ 21
Table 2-10 USB Host Port Signals ___________________________________________ 22
Table 2-11 PW2050 Wi-Fi Status LED Output Signals ____________________________ 22
Table 2-12 Ethernet Interface PW2050 Serial Port Signals ________________________ 23
Table 2-13 PW2050 Reset Signals ___________________________________________ 24



PW2050 Embedded Device Server Integration Guide 6

1: Introduction

About the Integration Guide

This user guide provides the information needed to integrate the Lantronix® PW2050™ family
of products into customer-printed circuit boards. This manual is intended for engineers
responsible for integrating the PW2050 module into their product. The scope of this document
provides how to connect the various module pin function groups as well as general module
placement and mounting. For detailed technical and compliance specifications please refer to
the PW2050 Embedded Device Server Data Sheet.

The table below describes the integration guide sections.

Table 1-1 PW2050 Integration Guide Sections

Section Description

PW2050 Features Provides an overview of the module functions and mechanical drawing
PW2050 Block Diagram Shows the module functional blocks
Signal Descriptions Provides signal descriptions and pinout information
Antenna Interface Lists the antennas pre-certified for use with the module
Antenna Placement Provides a general recommendation for antenna placement
Using the RF1 Signal Pin This section is reserved for a future off module antenna connection option
Serial Interface Provides an example on how to connect the unit to external

RS232/485/422 networks
Ethernet Interface Gives an example on how to connect the module Ethernet
USB Device Port Provides an example on how to connect the unit up as a USB device port
USB Host Port Provides an example on how to connect the module USB host ports
LEDs Describes the module LED connections
General Purpose IO Pins Describes the module GPIO connections
Reset Pins Describes the module RESET, DEFAULT, and WAKE pins
Mounting Instructions and
PCB Footprint
Product Information Label Provides an image and description of the unit label contents
Evaluation Board Schematic Provides the PW2050 Evaluation board schematic.

Provides the module PCB footprint and solder profile

PW2050 Embedded Device Server Integration Guide 7

Additional Documentation

Visit the Lantronix web site at www.lantronix.com/support/documentation for the latest
documentation and the following additional documentation.

Document Description

PW2050 Embedded
Device Server Data Sheet

Provides a unit description and all technical and compliance
specifications for the module

PW2050 Embedded
Device Server User Guide

PW2050 Embedded
Device Server
Development Kit Quick
Start

PW2050 Embedded
Device Server
Development Kit User
Guide

Notification Soldering
Profile and Washing

Provides information needed to configure, use, and update the
PW2050 firmware.

Provides the steps for getting the PW2050 and PW2050
evaluation kit up and running.

Provides a detailed description of the PW2050 evaluation kit
hardware

Provides guidance in developing a manufacturing assembly
process for various Lantronix embedded products.

PW2050 Embedded Device Server Integration Guide 8

2: Functional Description

Designed for quick integration with minimal engineering effort, the chip-sized PW2050
embedded device server provides simplicity and flexibility making it the easiest and fastest
networking-enabling module on the market.

PW2050 device servers are extremely compact networking solution that enables Ethernet or
Wireless connectivity on virtually any device with a serial interface. The included industry­proven Lantronix device server application and full IP stack allow seamless remote access to
device data simplifying design integration while providing robust connectivity.

The PW2050 embedded device servers can be utilized in designs typically intended for chip
solutions. A key difference with the PW2050 module is that there is virtually no need to write a
single line of code, translating to a much lower development cost and faster time-to-market.

Table 2-1 PW2050 Part Numbers

Part Number Description

TBD

TBD

TBD

TBD

PW2050 Features

The PW2050 device server is built around a 400Mhz ARM9 processor with 32MB of DDR2
DRAM and 128MB of embedded Flash memory. Network connections are provided by a dual
band 802.11 ac/b/g/n WLAN radio and 10/100Mbps Ethernet MAC and PHY.

The PW2050 embedded device server also supports the following:

♦ 400Mhz ARM9 CPU

♦ 32MB DDR2 DRAM

♦ 128MB NAND Flash

♦ 802.11AC/BGN wireless with option for on module antenna or on module U.FL

♦ On module 10/100Mbps Ethernet MAC/PHY. External magnetic and RJ45 required.

♦ One USB2.0 High Speed Host/Device interface.

♦ One USB2.0 High Speed Host only port

♦ One USB2.0 Full Speed Host only port

♦ Two 3.3-volt serial interface

PW2050 with on module U.FL— IEEE 802.11 ac/b/g/n Device Server Module, Extended
Temp, Bulk, RoHS

PW2050 with on module chip antenna— IEEE 802.11 ac/b/g/n Device Server Module,
Extended Temp, Bulk, RoHS

PW2050 — IEEE 802.11 ac/b/g/n Device Server Development Kit w/ on Module U.FL
and RF Cable to External Antenna, RoHS

PW2050— IEEE 802.11 ac/b/g/n Device Server Development Kit w/ on Module Chip
Antenna, RoHS

PW2050 Embedded Device Server Integration Guide 9

♦ 13 Configurable I/O pins

♦ Power supply filters

♦ Reset circuit

♦ Integrated wake up and shutdown for sleep and standby states

♦ Interface for connection to an external JTAG software debugger.

♦ Dedicated two wire serial port for debug

The PW2050 Wi-Fi embedded device server requires +5-volt DC power and is designed to
operate in an extended temperature range (see PW2050 data sheet for all technical
specifications).

Figure 錯誤! 使用 [常用] 索引標籤將 Heading 1 套用到您想要在此處顯示的文字。-1 PW2050 Dimensions

and Views

PW2050 Embedded Device Server Integration Guide 10

Signal Descriptions

The PW2050 embedded device server has a serial interface compatible with data rates up to
921,600 bps (in high-performance mode). All of the logic IO pins are 3.3V tolerant. The serial
signals usually connect to an internal device, such as a UART. For applications requiring an
external cable running with RS-232 or RS422/485 voltage levels, the PW2050 must interface
to a serial transceiver chip.

An on module 10/100Mbps Ethernet MAC and PHY are included on the module. For
connection to an external Ethernet network external magnetics and an RJ45 are required.

The module has options for an on-module chip antenna and an external antenna via an on­module U.FL connection.

Table 2-2 PW2050 Wi-Fi SMT PCB Interface Signals

Signal
Name

RF1 2 RF signal to PCB trace when

RF2 4 RF signal to PCB trace when

CP3/MISO

CP4/MOSI

CP7/SCK

CP8/CS

CP5 16 Configurable GPIO /

PW2050 Pin # Primary Function Reset

RF1_CTL is asserted low (Future
module versions only)

RF1_CTL is asserted low (Future
module versions only)

12 Configurable GPIO / SPI Master

serial data input, SPI Slave serial
data output

13 Configurable GPIO / SPI Master

serial data output, SPI Slave
serial data input

14 Configurable GPIO / SPI clock

15 Configurable GPIO, multiplexed

with SPI interface Chip Select

I2C Data

Internal

State

10K PU

Pull-up
/Pull­down

Driver
Strength

CP6 17 Configurable GPIO / I2C Clock 10K PU

USB1+/DDP 18 USB (Positive)

USB High Speed Host/Device
Port

USB1-/DDM 19 USB (Negative)

USB High Speed Host/Device
Port

USB2+ 21 USB (Positive)

USB High Speed Host Port

PW2050 Embedded Device Server Integration Guide 11