Lantronix PremierWave 2050 Quick setup guide

Part Number 900-787-R
Revision AAugust 2017
PremierWave 2050
Through-Hole Adapter
Integration Guide

PremierWave® 2050 Through-Hole Adapter Integration Guide 2
Intellectual Property
© 2017 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 and PremierWave are registered trademarks of Lantronix, Inc. in the United States
and other countries.
Patented: http://patents.lantronix.com; additional patents pending.
Wi-Fi is a registered trademark of Wi-Fi Alliance 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
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.

PremierWave® 2050 Through-Hole Adapter Integration Guide 3
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 PremierWave 2050 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, CMIIT, 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.
♦ PremierWave 2050 FCC ID number: R68PW2050
♦ PremierWave 2050 IC ID number: 3867A-PW2050
♦ PremierWave 2050 Japan ID numbers: 201-152843
♦ PremierWave 2050 China SRRC CMIIT ID: 2015AJ6847 (M)
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.

PremierWave® 2050 Through-Hole Adapter Integration Guide 4
Integration Notes
This module is authorized under limited module approval specific to mobile host equipment.
The antenna must be installed with a 20 cm space 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.)
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 and will void all warranties.
Note: With the purchase of any PremierWave 2050 family product, the OEM agrees to an
OEM firmware license agreement that grants the OEM a non-exclusive, royalty-free
firmware license to use and distribute the binary firmware image provided, only to the
extent necessary to use the PremierWave 2050 hardware. For further details, please see
the PremierWave 2050 OEM firmware license agreement.
Note: Please refer to the PremierWave 2050 802.11ac Embedded Wi-Fi Gateway
Datasheet, available at www.lantronix.com/support/documentation, 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
August 2017
A
Initial document.
For the latest revision of this product document, please check our online documentation at
www.lantronix.com/support/documentation.

PremierWave® 2050 Through-Hole Adapter Integration Guide 5
Table of Contents
Intellectual Property_________________________________________________________ 2
Contacts__________________________________________________________________ 2
Disclaimer ________________________________________________________________ 2
Labeling of the End Product __________________________________________________ 3
Integration Notes ___________________________________________________________ 4
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
PremierWave 2050 Features__________________________________________________ 9
PremierWave 2050 (PW20503) Block Diagram __________________________________ 11
Signal Descriptions ________________________________________________________ 12
Antenna Interface _________________________________________________________ 14
Antenna Placement ________________________________________________________ 16
Serial Interface ___________________________________________________________ 16
Ethernet Interface _________________________________________________________ 18
LEDs ___________________________________________________________________ 20
General Purpose I/O Pins ___________________________________________________ 20
Reset Pins _______________________________________________________________ 21
3: PCB Footprint and Module Dimensions 22
Access CAD Files _________________________________________________________ 22
MSD (Moisture Sensitive Device) Control for the Module ___________________________ 24
Product Information Label ___________________________________________________ 24
Evaluation Board Schematic _________________________________________________ 25

PremierWave® 2050 Through-Hole Adapter Integration Guide 6
List of Figures
Figure 2-1 PremierWave 2050 (PW20503) Dimensions and Views __________________ 10
Figure 2-2 PremierWave 2050 (PW20503) Block Diagram _________________________ 11
Figure 2-3 PremierWave 2050 (PW20503) Pin Locations in mm (inch) _______________ 14
Figure 2-4 Reverse-SMA to U.FL (Long) (Lantronix Part Number 500-180-R-ACC)______ 15
Figure 2-5 U.FL to U.FL Cable (Lantronix Part Number 500-181-R-ACC)_____________ 15
Figure 2-6 Reverse-SMA to U.FL (short) (Lantronix Part Number 500-182-R-ACC)______ 15
Figure 2-7 Serial Port Example ______________________________________________ 17
Figure 2-8 Ethernet Connections to an External 10/100 RJ45 Magnetic Jack (J5) _______ 19
Figure 2-9 Recommended Use of SHDN Signal to Shut Off External Power Rail________ 21
Figure 3-1 PremierWave 2050 (PW20503) Recommended Footprint in mm (inch) ______ 22
Figure 3-2 PremierWave 2050 (PW20503) Module Dimensions _____________________ 23
Figure 3-3 PremierWave 2050 Product Label ____________________________________ 24
Figure 3-4 Evaluation Board Schematic (1 of 6) _________________________________ 25
Figure 3-5 Evaluation Board Schematic (2 of 6) _________________________________ 26
Figure 3-6 Evaluation Board Schematic (3 of 6) _________________________________ 27
Figure 3-7 Evaluation Board Schematic (4 of 6) _________________________________ 28
Figure 3-8 Evaluation Board Schematic (5 of 6) _________________________________ 29
Figure 3-9 Evaluation Board Schematic (6 of 6) _________________________________ 30
List of Tables
Table 1-1 PremierWave 2050 Through-Hole Adapter Integration Guide Sections _________ 7
Table 2-1 PremierWave 2050 Part Numbers _____________________________________ 9
Table 2-2 PremierWave 2050 (PW20503) PCB Interface Signals____________________ 12
Table 2-3 PremierWave 2050 External Antenna Options __________________________ 14
Table 2-4 PremierWave 2050 Serial Port Signals ________________________________ 16
Table 2-5 Example RS232 Connections (Serial Transceiver Required) _______________ 17
Table 2-6 Example RS422/485 Connections (Serial Transceiver Required) ____________ 18
Table 2-7 Ethernet Port Signals ______________________________________________ 19
Table 2-8 PremierWave 2050 Wi-Fi Status LED Output Signals _____________________ 20
Table 2-9 Ethernet Interface PremierWave 2050 Serial Port Signals _________________ 20
Table 2-10 PremierWave 2050 Reset Signals ___________________________________ 21

PremierWave® 2050 Through-Hole Adapter Integration Guide 7
1:Introduction
About the Integration Guide
This integration guide provides the information needed to integrate the Lantronix®
PremierWave® 2050 through-hole footprint into customer-printed circuit boards. The
PremierWave 2050 through-hole footprint (Lantronix model number PW20503), is an adapter
within the PremierWave 2050 family products designed to be installed on an adapter board.
This integration guide is intended for engineers responsible for integrating the PremierWave
2050 through-hole adapter into their product. This document provides instruction for
connecting to the various module pin function groups as well as general module placement
and mounting. For detailed technical and compliance specifications please refer to the
PremierWave 2050 802.11ac Embedded Wi-Fi Gateway Datasheet available at
www.lantronix.com/support/documentation.
The table below describes the integration guide sections.
Table 1-1 PremierWave 2050 Through-Hole Adapter Integration Guide Sections
Section
Description
PremierWave 2050 Features
Provides an overview of the module functions and mechanical drawing
PremierWave 2050 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
Provides the module PCB footprint and solder profile
Product Information Label
Provides an image and description of the unit label contents
Evaluation Board Schematic
Provides the PremierWave 2050 evaluation board schematic.

1: Introduction
PremierWave® 2050 Through-Hole Adapter Integration Guide 8
Additional Documentation
Visit the Lantronix web site at www.lantronix.com/support/documentation for the latest
documentation and the following additional documentation.
Document
Description
PremierWave 2050 802.11ac
Embedded Wi-Fi Gateway
Integration Guide
Provides hardware descriptions and diagrams for the PremierWave
2050 module.
PremierWave 2050 802.11ac
Embedded Wi-Fi Gateway
Datasheet
Provides unit description and all technical and compliance
specifications for the module.
PremierWave 2050 802.11ac
Embedded Wi-Fi Gateway User
Guide
Provides information needed to configure, use, and update the
PremierWave 2050 firmware.
PremierWave 2050 802.11ac
Embedded Wi-Fi Gateway
Evaluation Kit Quick Start
Guide
Provides the steps for getting the PremierWave 2050 and
PremierWave 2050 evaluation kit up and running.
PremierWave 2050 802.11ac
Embedded Wi-Fi Gateway
Evaluation Kit User Guide
Provides a detailed description of the PremierWave 2050 evaluation kit
hardware.
Notification Soldering Profile
and Washing
Provides guidance in developing a manufacturing assembly process
for various Lantronix embedded products.

PremierWave® 2050 Through-Hole Adapter Integration Guide 9
2:Functional Description
The PremierWave 2050 gateway is a series of embedded gateways offering reliable and
always on 5G (802.11ac) embedded Wi-Fi connectivity for business critical applications.
With multiple host interfaces and production ready turnkey software and modular RF
certification, the PremierWave 2050 gateway accelerates the deployment and availability of
simple and robust WLAN connectivity for embedded IoT products and solutions.
This integration of secure high performance Wi-Fi makes this very suitable for deployments
within the retail/point of service (POS), medical, logistics and warehousing applications as well
as in industrial instrumentation such as printers, weigh scales, and automation controllers.
Table 2-1 PremierWave 2050 Part Numbers
Part Number
Description
PW205030001B
PremierWave 20503, 802.11ac Embedded Wi-Fi Gateway, dual U.FL, ind. temp, Bulk
PWGG2051000K
PremierWave 2050 evaluation kit, 802.11ac Embedded Wi-Fi Gateway, dual U.FL
Note: Please see the PremierWave 2050 802.11ac Embedded Wi-Fi Gateway
Integration Guide for the LGA footprint variant of the PremierWave 2050.
PremierWave 2050 Features
The PremierWave 2050 module is built around a 400 Mhz ARM9 processor with 32 MB of
DDR2 DRAM and 128 MB 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 PremierWave 2050 also supports the following:
♦ 400 Mhz ARM9 CPU
♦ 32 MB DDR2 DRAM
♦ 128 MB NAND Flash
♦ 802.11 ac/bgn wireless with option for on module antenna or on module U.FL
♦ On module 10/100 Mbps Ethernet MAC/PHY. External magnetic and RJ45 required.
♦ Two 3.3V serial interface
♦ Power supply filters
♦ Reset circuit
♦ Integrated wake up and shutdown for sleep and standby states
♦ Dedicated two wire serial port for debug
The PremierWave 2050 requires +5V DC power and is designed to operate in an extended
temperature range. (See the PremierWave 2050 802.11ac Embedded Wi-Fi Gateway
Datasheet available at www.lantronix.com/support/documentation for all technical
specifications.)

2: Functional Description
PremierWave® 2050 Through-Hole Adapter Integration Guide 10
Figure 2-1 PremierWave 2050 (PW20503) Dimensions and Views

2: Functional Description
PremierWave® 2050 Through-Hole Adapter Integration Guide 11
PremierWave 2050 (PW20503) Block Diagram
The following drawing is a block diagram of the PremierWave 2050 showing the relationships
of the components.
Figure 2-2 PremierWave 2050 (PW20503) Block Diagram

2: Functional Description
PremierWave® 2050 Through-Hole Adapter Integration Guide 12
Signal Descriptions
The PremierWave 2050 has a serial interface compatible with data rates up to 921,600 bps. 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 PremierWave 2050 must interface to a serial transceiver chip.
An on-module 10/100 Mbps Ethernet MAC and PHY are included on the module. For
connection to an external Ethernet network, external magnetics and an RJ45 are required.
Table 2-2 PremierWave 2050 (PW20503) PCB Interface Signals
Pin
Number
Signal Name Primary Function Reset
State
Internal
Pull-up
/Pull-
down
Driver
Strength
1
RESET
Unit hardware reset, active low. Drive low
to reboot unit
35K PU
2
GROUND
Signal ground. Connect to ground plane
3
DEFAULT
Unit reset to default, active low.
Drive low for 7 seconds or longer to reset
unit to default settings.
35K PU
4
WAKE
CPU wake up input. Module wakes
from low power state on a rising
edge
100K
PU
5
TXD1
UART1 serial transmit data output
6
ETX+
Ethernet TX (Positive)
7
RTS1
UART1 serial ready to send output
8
ETX-
Ethernet TX (Negative)
9
RXD1
UART1 Serial receive data input
10
ETCT
Center tap connection for Ethernet TX pair
11
CTS1
UART1 clear to send input
12
ERCT
Center tap connection for Ethernet RX pair
13
CP1
Reserved for future GPIO
14
ERX+
Ethernet RX (Positive)
15
CP2
Reserved for future GPIO
16
ERX-
Ethernet RX (Negative)
17
CP3
Reserved for future GPIO
18
LINK
LED function for WLAN link indication,
active low
19
CP4
Reserved for future GPIO
20
ACT
Ethernet link/activity LED,
active low for link, toggle for activity.
21
TXD2
UART2 serial transmit data output
22
WLAN
System status LED, active high
23
RTS2
UART2 serial ready to send output

2: Functional Description
PremierWave® 2050 Through-Hole Adapter Integration Guide 13
Pin
Number
Signal Name Primary Function Reset
State
Internal
Pull-up
/Pull-
down
Driver
Strength
24
CP11
Reserved for future GPIO
25
RXD2
UART2 serial receive data input
26
SHDN
Indicates when module is in
Standby state. Use to power off
external devices
27
CTS2
UART2 clear to send input
28
CP6_I2CSCL
Reserved for future GPIO
29
CP7
Reserved for future GPIO
30
CP5_I2CDATA
Reserved for future GPIO
31
CP9
Reserved for future GPIO
32
5V
5V power input. Connect to power plane
33
CP10
Reserved for future GPIO
34
5V
5V power input. Connect to power plane
35
CP8
Reserved for future GPIO
36
5V
5V power input. Connect to power plane
37
DBTX
Debug UART
serial transmit data
output
38
GROUND
Signal ground. Connect to ground plane
39
GROUND
Signal ground. Connect to ground plane
40
GROUND
Signal ground. Connect to ground plane
41
DBRX
Debug UART serial receive data
input
42
GROUND
Signal ground. Connect to ground plane
Note 1: The logic IO pins are 3.3V tolerant.

2: Functional Description
PremierWave® 2050 Through-Hole Adapter Integration Guide 14
Figure 2-3 PremierWave 2050 (PW20503) Pin Locations in mm (inch)
Antenna Interface
The PremierWave 2050 module has been certified using the external antennas listed below. Per
FCC guidelines, the PremierWave 2050 Wi-Fi certification remains valid if using an antenna of
similar type to the antennas below. If using an antenna of similar type to one of the antennas
below, but from a different manufacturer part number the antenna gain must be equal to or less
than specified in the table. Refer to the PremierWave 2050 802.11ac Embedded Wi-Fi Gateway
Datasheet, available at www.lantronix.com/support/documentation, for full compliance
instructions and information. Consult with your certification lab for more details.
Table 2-3 PremierWave 2050 External Antenna Options
Antenna Type
Peak Gain
Typical
Lantronix
Part
Number
Vendor
Vendor
Part
Number
Approved
Region
PCB Strip Antenna
with 50 mm cable to
U.FL connector
With tape backing
2.5dBi, 2.39 GHz
to 2.49 GHz
5 dBi, 4.9 GHz to
5.9 GHz
XPW100A003
-01-B
50 piece bulk
pack
Ethertronics
1001077
FCC, IC, EU,
AUS/NZS,
JPN, China,
Mexico
PCB Strip Antenna
with 50 mm cable to
U.FL connector
Without tape
backing
2.5dBi, 2.39
GHz to 2.49 GHz
5dBi, 4.9Ghz to
5.9Ghz
Ethertronics
1000668
FCC, IC, EU,
AUS/NZS,
JPN, China,
Mexico
Swivel type antenna,
with RP-SMA(M)
connector
2 dBi, 2.4 GHz to
2.5 GHz, 2 dBi,
5.15 GHz to 5.85
GHz
930-033-R-
ACC
50 piece bulk
pack
Wanshih
WSS002
FCC, IC, EU,
AUS/NZS,
JPN, China,
Mexico
Swivel type antenna,
with RP-SMA(M)
connector
3.8 dBi, 2.4Ghz
to 2.5Ghz,
5.5 dBi, 4.9 GHz
to 5.8Ghz
Taoglas
GW.71.5153
(Not for EU
use)
FCC, IC,
AUS/NZS,
JPN, China,
Mexico
PremierWave 20503

2: Functional Description
PremierWave® 2050 Through-Hole Adapter Integration Guide 15
Note: The PCB strip antenna is available from Ethertronics with or without adhesive tape
backing for mounting to a plastic case. The antennas Lantronix supplies include an
adhesive backing. For the component without tape backing a non-conductive double
sided adhesive tape can be used to fix the antenna in place. The Ethertronics part
numbers listed above come with a 50 mm U.FL cable attached to the PCB strip antenna.
The 50 mm cable length is the minimum allowed cable length for use with the
PremierWave 2050.For similar PCB strip antennas with longer cables consult with
Ethertronics (www.ethertronics.com).
Lantronix provides a U.FL to Reverse SMA antenna cable in with the evaluation board and
sample kits for development work. These cables can be purchased from Lantronix for production
or supplied by an RF cable manufacturer. External antennas can be purchased from an antenna
vendor. Components for cable design should be selected for low loss over the entire 2.4 GHz to
5.9 GHz signal range. The cable target impedance should be 50 ohms.
Figure 2-4 Reverse-SMA to U.FL (Long) (Lantronix Part Number 500-180-R-ACC)
Figure 2-5 U.FL to U.FL Cable (Lantronix Part Number 500-181-R-ACC)
Figure 2-6 Reverse-SMA to U.FL (short) (Lantronix Part Number 500-182-R-ACC)

2: Functional Description
PremierWave® 2050 Through-Hole Adapter Integration Guide 16
Antenna Placement
When designing the PremierWave 2050 to a mating board, it is important to consider the final
installation of the module and its location with respect to connecting access points. The
antenna should be placed so that it has as clear as possible path to the connecting access
point for maximum range. Avoid placing the antenna such that it is blocked by metal walls or
ground planes of adjacent circuit boards.
Serial Interface
The PremierWave 2050 has two external serial interfaces. The signal levels on the serial
interface are 3.3V tolerant. The serial interfaces require an external transceiver in order to
connect to external RS232, RS485, or RS422 networks. The signals of the Serial Ports may be
connected as shown in the reference schematic below. The transceiver shown in the
reference schematic is an Exar product, part number SP336. This transceiver is a multiprotocol
RS232, RS485, RS422 transceiver. Single protocol transceivers may be used as required.
The PremierWave 2050 interface may also be directly connected to the UART interface of an
external CPU.
Table 2-4 PremierWave 2050 Serial Port Signals
Signal
Module Pin
Description
TXD1
5
Serial transmit data output
RTS1
7
Serial ready-to-send / serial transmit enable output
RXD1
9
Serial receive data input
CTS1
11
Serial clear-to-send input
TXD2
21
Serial transmit data output 2
RTS2
23
Serial ready-to-send / serial transmit enable output
RXD2
25
Serial receive data input 2
CTS2
27
Serial clear-to-send input

2: Functional Description
PremierWave® 2050 Through-Hole Adapter Integration Guide 17
Figure 2-7 Serial Port Example
Table 2-5 Example RS232 Connections (Serial Transceiver Required)
PremierWave 2050 Signal
DTE Connector
DCE Connector
Signal (Logic)
Description
DB9
DB25
Signal
DB9
DB25
Signal
RXDx
Data In
2
3
RXDx
3
2
TXDx
TXDx
Data Out
3
2
TXDx
2
3
RXDx
RTSx
H/W Flow Control Output
7
4
RTSx
8
5
CTSx
CTSx
H/W Flow Control Input
8
5
CTSx
7
4
RTSx
CPx
Modem Control Input
1
8
DCDx
4
20
DTRx
CPy
Modem Control Output
4
20
DTRx
1
8
DCDx

2: Functional Description
PremierWave® 2050 Through-Hole Adapter Integration Guide 18
Table 2-6 Example RS422/485 Connections (Serial Transceiver Required)
PremierWave
2050 Signal
(logic)
Description
RS485
Signal
DB25 4
Wire
DB25 2
Wire
DB9 4
wire
DB9 2
wire
TXDx
Data Out
TX+485
14
14
7
7
TXDx
Data Out
TX-485
15
15
3
3
RXDx
Data In
RX+485
21
14
2
7
RXDx
Data In
RX-485
22
15
8
3
RTSx
TX Enable
CPx
RS485 Select
CPy
RS485 2-wire
Note: The IO pins for PremierWave 2050 are set to floating input on power up until
configured by unit firmware. An external 100K ohm pull-up may be required on the serial
transmit signal to prevent downstream UART devices from detecting false characters on
initial power up.
Ethernet Interface
The PremierWave 2050 provides a 10/100 Mbps Ethernet interface for connection to an
external network through external magnetics and an external RJ45. The figure below shows
the Ethernet connections to a 10/100 Ethernet RJ45 Jack with Magnetics, J5 in the figure. The
BELFUSE RJ45 magnetic jack is part number 08B0-1D1T-06-F.
The Ethernet differential pair signals, ERXM/ERXP and ETXM/ETXP should be routed as 100-
ohm differential pairs on a layer next to the signal ground plane. The use of vias on these
signals should be minimized. Center tap signals RXCT and TXCT should be routed with at
least 20 mil trace thickness. The area underneath the RJ45 magnetic jack should be void of all
signals and planes. The connector shield should be connected to chassis. It is recommended
that 1206 resistor pads from chassis ground to signal ground be placed next to each of the
shield tabs. The resistor pads allow for 0 ohm jumper, ferrite beads, or decoupling caps to be
installed as needed for EMI/EMC improvement.
The Ethernet LED signals should be routed to discrete LEDs or to the LED pins on the RJ45
through 220 ohm or larger resistors. The LED signals are active low.
Also shown in the figure is an optional active choke that can be used to improve ESD, EFT,
and EMI/EMC performance in harsh environments. The device is shown as U22 in the figure
and is made by Akros Silicon, part number AS1602. This device features route through pin
assignments allowing for the Ethernet differential signal pairs to be routed without altering the
trace impedance or adding vias. Due to this routing the device could be installed or
depopulated as needed. Lantronix has performed all certification to FCC Class B without U22
populated.
The Ethernet signals may be left disconnected if unused.

2: Functional Description
PremierWave® 2050 Through-Hole Adapter Integration Guide 19
Table 2-7 Ethernet Port Signals
Pin Name
Description
PremierWave
2050 Pins
Signal Requirement
RJ45
MagJack
Belfuse,
08B0-1D1T-
06-F Pin
assignment
ERXM
Ethernet Receive Negative signal.
16
100 ohm differential
pair with ERXP
5
EXRP
Ethernet Receive Positive signal.
14
100 ohm differential
pair with ERXM
4
ETXM
Ethernet Transmit Negative
signal.
8
100 ohm differential
pair with ETXP
3
ETXP
Ethernet Transmit Positive signal.
6
100 ohm differential
pair with ETXM
2
RXCT
Center tap for receive pair.
12
Route > 20 mil width
6
TXCT
Center tap for transmit pair
10
Route > 20 mil width
1
Chassis
Unit chassis
-
RJ45 connector shield
Shield tabs
E_LNKACT
Link / activity LED. Active low.
Solid for link, blink for activity.
20
Route to LED cathode
through 220 ohm or
greater.
9
E_SPEED
Link Speed Active low for
100Mbps, Off (high) for 10Mbps.
18
Route to LED cathode
through 220 ohm or
greater.
7
3V3
3.3 V power
3.3V power, connect to
LED anodes.
8, 10
Figure 2-8 Ethernet Connections to an External 10/100 RJ45 Magnetic Jack (J5)

2: Functional Description
PremierWave® 2050 Through-Hole Adapter Integration Guide 20
LEDs
The PremierWave 2050 contains several external signals that are intended to drive external
status LEDs. The LEDs are listed below. The signals may be connected as shown in the
reference schematic figure below.
Note: The System LED usually remains on. When the Default button is pressed for 7
seconds, the System LED starts blinking every second to indicate the default button can
be released to complete resetting the unit to factory default. The unit reboots after
release of the Default button. A lit WLAN LED indicates the STA interface is associated
with an access point.
Table 2-8 PremierWave 2050 Wi-Fi Status LED Output Signals
Signal
Pin
Description
SYS_LED
22
System status LED, active high
WLAN_LED
18
LED function for WLAN link indication, active low
ETH LINK/ACT
20
Ethernet link ON (Active low)
Ethernet activity Blink (toggle)
General Purpose I/O Pins
PremierWave 2050 contains 13 pins which may be used as configurable inputs or outputs.
Listed below are the configurable I/O pins. These pins are 3.3V tolerant.
Table 2-9 Ethernet Interface PremierWave 2050 Serial Port Signals
Signal
Pin
Description
PremierWave 2050
Reset
State
CP1
13
Configurable I/O
Input
CP2/INT
15
Configurable I/O-SPI interrupt input
Input
CP3
17
Configurable I/O- SPI MISO
Input
CP4
19
Configurable I/O-SPI MOSI
Input
CP5
30
Configurable I/O
Input
CP6
28
Configurable I/O
Input
CP7
29
Configurable I/O-SPI Clock
Input
CP8
35
Configurable I/O-SPI Chip Select
Input
CP9
31
Configurable I/O
Input
CP10
33
Configurable I/O
Input
CP11
24
Configurable I/O
Input
Note: These pins are reserved for GPIO on a future software release.