Lantronix XPort Quick setup guide

Part Number 900-310
Revision F March 2005
XPort™ Integration Guide

Copyright and Trademark
© 2005, Lantronix. All rights reserved. No part of the contents of this book may be
transmitted or reproduced in any form or by any means without the written permission
of Lantronix. Printed in the United States of America.
XPort, with its patent-pending technology, is a trademark of Lantronix.
Ethernet is a trademark of XEROX Corporation. UNIX is a registered trademark of
The Open Group. Windows 95, Windows 98, Windows 2000, Windows NT, and
Windows XP are trademarks of Microsoft Corp. Netscape is a trademark of Netscape
Communications Corporation.
Contacts Lantronix Corporate Headquarters
15353 Barranca Parkway
Irvine, CA 92618, USA
Phone:[phone]
Fax: [phone]
Technical Support
Fax: [phone]
Online: www.lantronix.com/support
Email/Chat: 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 and Revisions
Operation of this equipment in a residential area is likely to cause interference, in
which case the user, at his or her own expense, will be required to take whatever
measures may be required to correct the interference.
Note: This product has been designed to comply with the limits for a Class B
digital device pursuant to Part 15 of 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 this guide, may
cause harmful interference to radio communications.
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 XPort, 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 XPort hardware. For further details,
please see the XPort OEM firmware license agreement.
Date Rev. Comments
11/03 A Initial Release
4/04 B Firmware 1.6 features; information to support XPort-03
6/04 C Technical specifications updated
8/04 D Firmware 1.8 features; added XPort-485 information
10/04 E Removed out of date manual references
3/05 F Updated illustration

XPort™IntegrationGuide 3
Contents
Copyright and Trademark _________________________________________________2
Contacts ______________________________________________________________2
Disclaimer and Revisions _________________________________________________2
1: Introduction 5
About the Integration Guide________________________________________________5
Additional Documentation _________________________________________________5
2: Description and Specifications 6
The XPort _____________________________________________________________6
XPort Block Diagram_____________________________________________________6
PCB Interface __________________________________________________________7
Ethernet Interface _______________________________________________________9
LEDs _________________________________________________________________9
Dimensions ___________________________________________________________10
Recommended PCB Layout ______________________________________________11
Product Information Label ________________________________________________11
Technical Specifications _________________________________________________12
3: Development Kit 14
Contents of the Kit______________________________________________________14
Evaluation Board Description _____________________________________________14
Evaluation Board Block Diagram___________________________________________15
Major Components __________________________________________________________15
Serial RS-232 Interface__________________________________________________15
RS-232 Port___________________________________________________________16
Power Supply _________________________________________________________16
General Control PLD____________________________________________________16
Configuration Switch Bank _______________________________________________16
SW1-2 Options _____________________________________________________________17
SW1-3 Options _____________________________________________________________18
SW1-4, SW1-5 Options_______________________________________________________19
Timer________________________________________________________________20
Board Layout__________________________________________________________21
Component Identification _____________________________________________________21
A: XPort-485 Connection Diagram 22
B: Compliance and Warranty Information 23
Compliance Information__________________________________________________23
Warranty _____________________________________________________________24

4 XPort™ Integration Guide
List of Figures
Figure 2-1. Side View of the -03 XPort ...................................................................................6
Figure 2-2. XPort Block Diagram............................................................................................7
Figure 2-3. XPort LEDs...........................................................................................................9
Figure 2-4. Front View ..........................................................................................................10
Figure 2-5. Bottom View .......................................................................................................10
Figure 2-6. Side View............................................................................................................10
Figure 2-7. PCB Layout ........................................................................................................11
Figure 2-8. Product Label ....................................................................................................12
Figure 3-1. SW1-2 OFF ........................................................................................................17
Figure 3-2. SW1-2 ON..........................................................................................................18
Figure 3-3. SW1-3 OFF ........................................................................................................18
Figure 3-4. SW1-3 ON..........................................................................................................18
Figure 3-5. SW1-5 OFF and SW1-4 ON...............................................................................19
Figure 3-6. SW1-5 ON and SW1-4 ON.................................................................................19
Figure 3-7. JP4 Configurable Pins Interface Header Footprint.............................................20
Figure 3-8. Board Layout......................................................................................................21
List of Tables
Table 2-1. PCB Interface Signals............................................................................................7
Table 2-2. Ethernet Interface Signals (Industry Standards)....................................................9
Table 2-3. XPort LED Functions (XPort-03 and greater only).................................................9
Table 2-4. Technical Specifications......................................................................................12
Table 3-1. RS-232 Signals....................................................................................................15
Table 3-2. Configuration Switch Settings..............................................................................17
Table 3-3. CP1 Status Indicator............................................................................................18
Table 3-4. LED States...........................................................................................................19
Table 3-5. JP4 Connections..................................................................................................20
Table 3-6. Board Components..............................................................................................21

XPort™IntegrationGuide 5
1
1: : I In nt tr ro od du uc ct ti io on n
About the Integration Guide
This guide provides the information needed to test the XPort™ device server on the
XPort Evaluation Board. This manual is intended for engineers responsible for
integrating the XPort into their product.
Note: This document covers XPort™ Device Server versions XP1001000-01 (XPort-
01), XP1001000-03 (XPort-03), and XP1004000-03 (XPort-485).
Additional Documentation
The following guides are available on the product CD and the Lantronix Web site
(www.lantronix.com)
XPort™ Getting Started Provides the steps for getting the hardware and
software up and running.
XPort™ User Guide Provides information needed to configure, use,
and update the XPort firmware.
DeviceInstaller User Guide Provides instructions for using the Windows-
based utility to configure the XPort and other
Lantronix device servers.
Com Port Redirector User
Guide Provides information on using the Windows-
based utility to create a virtual com port.
In addition to this documentation, the supplied CD contains a configurable pins
control web applet that lets you view the state of the configurable GPIO pins. This
applet is provided in the Sample Code and Solutions folder.
For firmware versions 1.3 and earlier, the corresponding applet file is
xptcpctl102.cob. For later firmware versions (greater than version 1.3), the
corresponding applet file is xpt_gpioctl_154.cob.

XPort™IntegrationGuide 6
2
2: : D De es sc cr ri ip pt ti io on n a an nd d S Sp pe ec ci if fi ic ca at ti io on ns s
The XPort embedded device server is a complete network-enabling solution enclosed
within an RJ45 package. This miniature serial-to-Ethernet converter empowers
original equipment manufacturers (OEMs) to quickly and easily go to market with
networking and web page serving capabilities built into their products.
The XPort
The XPort contains Lantronix’s own DSTni controller, with 256 Kbytes of SRAM,
2 Kbytes of boot ROM for the XPort-01 or 16 Kbytes of boot ROM for the XPort-03 or
greater, and integrated AMD 10/100 PHY.
The XPort also contains the following:
3.3-volt serial interface
All I/O pins are 5V tolerant (XPort-03 or greater only)
4-Mbit flash memory
Ethernet magnetics
Power supply filters
Reset circuit
+1.8V regulator
25-MHz crystal and Ethernet LEDs
The XPort requires +3.3-volt power and is designed to operate in an extended
temperature range (see technical data).
Figure 2-1. Side View of the -03 XPort
XPort Block Diagram
The following drawing is a block diagram of the XPort showing the relationships of the
components.
RJ45
CMOS IO RESET +3.3VDC
DSTni -EX
FLASH 25MHz
MAGNETICS LEDs
Rx
Tx

Description and Specifications
XPort™ Integration Guide 7
Figure 2-2. XPort Block Diagram
PCB Interface
The XPort has a serial port compatible with data rates up to 920 kbps (in high-
performance mode) for the XPort-03 and greater, and at 230 kbps for the XPort-01.
The serial signals (pins 4–8) are 3.3V CMOS logic level (5V tolerant for the XPort-03
and greater only). The serial interface pins include +3.3V, ground, and reset. 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 XPort must interface to a serial transceiver chip. We supply an RS-232
transceiver on the XPort Evaluation Board for this purpose. There is an XPort option
available for interfacing with RS422/485.
Table 2-1. PCB Interface Signals
Signal Name XPort
Pin # Primary Function
GND 1 Circuit ground
3.3V 2 +3.3V power in
Reset 3 External reset in
Data Out 4 Serial data out (driven by DSTni’s built-in UART)
Data In 5 Serial data in (read by DSTni’s built-in UART)
CP1/RTS
(Configurable Pin 1) 6 CP1 can be configured as follows:
•Flow control: RTS (Request to Send) output driven
by DSTni’s built-in UART for connection to CTS of
attached device.
•Programmable input/output: CP1 can be driven or
read through software control, independent of serial
port activity.

Description and Specifications
8 XPort™ Integration Guide
Signal Name XPort
Pin # Primary Function
CP2/DTR
(Configurable Pin 2) 7 CP2 can be configured as follows:
•Modem control: DTR (Data Terminal Ready) output
driven by DSTni’s built-in UART for connection to DCD
of attached device.
•Programmable input/output: CP2 can be driven or
read through software control, independent of serial
port activity.
CP3/CTS/DCD
(Configurable Pin 3) 8 CP3 can be configured as follows:
••Flow control: CTS (Clear to Send)
input read by DSTni’s built-in UART
for connection to RTS of attached
device.
••Modem control: DCD (Data Carrier
Detect) input read by DSTni’s built-in
UART for connection to DTR of
attached device.
•Programmable input/output: CP3 can be driven or
read through software control, independent of serial
port activity.

Description and Specifications
XPort™ Integration Guide 9
Ethernet Interface
The Ethernet interface magnetics, RJ45 connector, and Ethernet status LEDs are all
in the device server shell.
Table 2-2. Ethernet Interface Signals (Industry Standards)
Signal Name DIR Contact Primary Function
TX+ Out 1 Differential Ethernet transmit data +
TX- Out 2 Differential Ethernet transmit data -
RX+ In 3 Differential Ethernet receive data +
RX- In 6 Differential Ethernet receive data -
Not used 4 Terminated
Not used 5 Terminated
Not used 7 Terminated
Not Used 8 Terminated
SHIELD Chassis ground
LEDs
The XPort contains the following LEDs:
Link (bi-color, left LED) ⎯XPort-03 and greater only
Activity (bi-color, right LED)
Figure 2-3. XPort LEDs
CONTACT 1
CONTACT 8
LEFT
LED RIGHT LED
SHIELD TABSHIELD TAB
Table 2-3. XPort LED Functions (XPort-03 and greater only)

Description and Specifications
10 XPort™ Integration Guide
Dimensions
The XPort dimensions are shown in the following drawings.
Figure 2-4. Front View
RIGHT
LED
18.25 [0.719]
16.25 [0.640]
11.55 [0.455]
7.15 [0.281]
CONTACT 1
CONTACT 8
5.85 [0.230]
14.50 [0.571] 4.03 [0.158]
13.50 [0.531]
1.85 [0.073]
3.25 [0.128]
3.30 [0.130]
1.27 [0.050]
0.40 [0.016]
FRONT
VIEW
DIMS = mm (in)
LEFT
LED
SHIELD TAB
SHIELD TAB
TOLERANCE
.XX+/-0.20[0.008]
Figure 2-5. Bottom View
Figure 2-6. Side View
33.90 [1.335]
1.00 [0.039]
0.35 [0.014] 10.84 [0.427]
6.35 [0.250]
2.54 [0.100] 3.20 [0.126]
0.60 [0.024]
FRONT SHIELD
GROUND
INTERFACE
PINS
DIMS = mm (in)
11.90 [0.468]
SHIELD TAB
TOLERANCE
.XX+/-0.20[0.008]
82
71

Description and Specifications
XPort™ Integration Guide 11
Recommended PCB Layout
The hole pattern and mounting dimensions for the XPort device server are shown in
the following drawing. For proper heat dissipation, it is recommended that the PCB
have approximately 1 square inch of copper attached to the shield tabs. The shield
tabs are an important source of heat sinking for the device.
Figure 2-7. PCB Layout
Product Information Label
The product information label contains important information about your specific unit,
such as its product ID (name), bar code, part number, and Ethernet (MAC) address.

Description and Specifications
12 XPort™ Integration Guide
Figure 2-8. Product Label
Technical Specifications
Table 2-4. Technical Specifications
Category Description
CPU, Memory Lantronix DSTni-EX 186 CPU, 256-Kbyte zero wait state SRAM, 512-Kbyte flash,
2-Kbyte boot ROM (XPort-01), 16-Kbyte boot ROM (XPort-03 and greater)
Firmware Upgradeable via TFTP and serial port
Reset Circuit Internal 200ms power-up reset pulse. Power-drop reset triggered at 2.6V. External
reset input causes an internal 200ms reset.
Serial Interface CMOS (Asynchronous) 3.3V-level signals
Rate is software selectable:
XPort-01: 300 bps to 230400 bps
XPort-03 and greater: 300 bps to 921600 bps
Serial Line Formats Data bits: 7 or 8
Stop bits: 1 or 2
Parity: odd, even, none
Modem Control DTR/DCD, CTS, RTS
Flow Control XON/XOFF (software), CTS/RTS (hardware), None
Programmable I/O 3 PIO pins (software selectable), sink or source 4mA max.
Network Interface RJ45 Ethernet 10Base-T or 100Base-TX (auto-sensing)
Compatibility Ethernet: Version 2.0/IEEE 802.3 (electrical), Ethernet II frame type
Protocols Supported ARP, UDP/IP, TCP/IP, Telnet, ICMP, SNMP, DHCP, BOOTP, TFTP, Auto IP,
SMTP, and HTTP
LEDs 10Base-T and 100Base-TX Link Activity, Full/half duplex. Software generated
status & diagnostic signals can optionally drive external LEDs through CP1 & CP3.
Management Internal web server, SNMP (read only)
Serial login, Telnet login
Security Password protection, locking features, optional Rijndael 256-bit encryption
Internal Web Server Serves static web pages and Java applets
Storage capacity: 384 Kbytes
Weight 0.34 oz (9.6 grams)
Material Metal shell, thermoplastic case
Temperature Operating range:
XPort-01: -40°C to +85°C (-40°F to 185°F)
XPort-03 and greater: -40°C to +85°C (-40°F to 185°F) normal mode,
-40°C to +75°C (-40°F to 167°F) high-performance mode
Shock/Vibration Non-operational shock: 500 g's
Non-operational vibration: 20 g's
Revision
Part Number
MAC Address
Manufacturing Code

Description and Specifications
XPort™ Integration Guide 13
Category Description
Warranty One year limited warranty (-01 models)
Two year limited warranty (-03 models)
Included Software Windows™ 98/NT/2000/XP-based Device Installer configuration software and
Windows™-based Com Port Redirector
EMI Compliance Radiated and conducted emissions - complies with Class B limits of EN
55022:1998
Direct & Indirect ESD - complies with EN55024:1998
RF Electromagnetic Field Immunity - complies with EN55024:1998
Electrical Fast Transient/Burst Immunity - complies with EN55024:1998
Power Frequency Magnetic Field Immunity - complies with EN55024:1998
RF Common Mode Conducted Susceptibility - complies with EN55024:1998

XPort™IntegrationGuide 14
3
3: : D De ev ve el lo op pm me en nt t K Ki it t
The XPort Development Kit includes everything you need to begin to integrate the
XPort into your product design.
Contents of the Kit
The development kit contains the following items:
XPort Evaluation Board
XPort Device Server
+5VDC Universal Power Supply with snap-fit plugs for different countries
RS-232 cable, DB9M/F
CAT5e UTP RJ45M/M Ethernet cable
CD with software utilities and documentation (in PDF format)
Serial adaptor, 25-pin to 9-pin
Evaluation Board Description
The XPort Evaluation Board provides a test platform for the Lantronix XPort device
server.
The XPort Evaluation Board supplies an RS-232 serial interface to 3.3V CMOS level
interface connection for the XPort. It also supplies the XPort device server with
+3.3V. Evaluation board controls include a programmable logic device (PLD), reset
push button switch, DIP switch, timer circuit, and reset circuit.
In addition to the status LEDs on the XPort, the evaluation board contains multiple
LEDs. The power supply drives the red LED. The PLD drives the remaining LEDs; in
the basic mode of operation, these LEDs indicate whether the RS-232 interface is

Development Kit
XPort™ Integration Guide 15
valid, whether the serial interface transmit data and serial interface receive data are
active, and the state of the three configurable pins, CP1, CP2, and CP3.
The PLD and a six-position DIP switch control the evaluation board mode of
operation. The switch outputs are inputs to the PLD to select the desired mode of
operation.
Evaluation Board Block Diagram
TP8 TP9
XPort
DIP
SWITCH
RESET
+5
VDC
IN
3.3V
POWER
PIO
RS232
PLD
TMR
LEDs
SLOW
PWR
LED
RTS, DCD
DTR, CTS
PLD HEADER
RXD/TXD
SWITCH
RESET PADS
JP3
JP4
J1
D2
SW1SW2
DB-9F
TP13
TP11
RTS
DTR
CTS/DCD
Major Components
The major components of the evaluation board include:
RS-232 transceiver
Universal Power Adapter
Reset switch
DIP switch
DB9 interface connector (DCE)
Test points to monitor all XPort pins
6-pin header (JP4) for connecting user devices or circuits to CP1, CP2, and
CP3.
Power, signal ground, and reset inputs are also available on JP4.
Serial RS-232 Interface
The RS-232 level serial interface is implemented with a transceiver that converts
3.3V CMOS levels to RS-232 levels. A straight-through serial cable with 9-pin
connectors (M/F) is all you need to connect to a DTE device such as a PC.
The table below lists the RS-232 signals. Note that XPort signal pins 6, 7, and 8 are
configurable pins you can optionally set for functions other than RS-232 control. The
configuration DIP switch determines whether or not to route the XPort configurable
pins to the RS-232 converter.
Table 3-1. RS-232 Signals
XPort Signal XPort Pin # Direction DB9 Pin # DTE Device Signal
DTR 7 Out 1 DCD
Data Out 4 Out 2 RXD
Data In 5 In 3 TXD
DCD 8 In 4 DTR

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16 XPort™ Integration Guide
XPort Signal XPort Pin # Direction DB9 Pin # DTE Device Signal
Ground 1 -- 5 GND
CTS 8 In 7 RTS
RTS 6 Out 8 CTS
Note: The supplied CD contains a configurable pins control web applet that
lets you view the state of the configurable GPIO pins. This applet is provided
in the Sample Code and Solutions folder.
RS-232 Port
The evaluation board uses a TI SN75C3238 IC to convert all RS-232 interface
signals to 3.3V CMOS-level XPort signals.
We selected the interface IC for its capability of true RS-232-level performance from
a +3.3V power source and for its 15 kV ESD protection. The part also includes an
RS-232 valid output that lights an LED by means of the PLD circuit.
Power Supply
The evaluation board contains a +3.3V regulator that receives input power by means
of a 2.5mm input power jack. The input power should be 5VDC from a regulated DC
source. The evaluation kit provides a +5VDC power module.
We recommend that you also connect the evaluation board to an earth ground. You
can use the chassis ground rectangle (copper tape), TP7, or the shell of the DB9
connector.
General Control PLD
The purpose of the PLD is to provide general evaluation board mode control and
LED signal-level monitoring. The PLD works with the 6-position mode control switch
(SW1) and the timer and reset circuits to provide mode control.
The PLD is a Lattice ISPLSI2032VE part, which is contained in a 48-pin TQFP
package. This part contains 32 I/O and 32 microcells and is in-circuit programmable.
A 1x8-pin header (JP3) provides for standard Lattice in-circuit programming.
Configuration Switch Bank
Switch module SW1 contains six independent switches for configuring the PLD on
the evaluation board. The PLD controls how the signals from the XPort are routed on
the evaluation board. Positions 1 and 6 are for self-test. Positions 2 through 5 are for
configuring XPort pins for various operations.
Three XPort pins are configurable pins. You can configure these pins for hardware
flow control or as LED status indicators on the evaluation board. For information
about configuring these pins, see the XPort User Guide.
On the evaluation board, configurable pins are shown as CP1, CP2, CP3, and SW1
switch positions are shown as SW1-1 through SW1-6.
Note: In the following sections, the terms LED1 and LED3 refer to diagnostic
modes. You can put control of two of the XPort pins into these modes.

Development Kit
XPort™ Integration Guide 17
Table 3-2. Configuration Switch Settings
SW1 POS Function
ON SW1-1 and SW1-6 ON for self-test mode. (Factory test)
1 OFF Normal mode.
ON SW1-1 and SW1-6 ON for self-test mode. (Factory test)6 OFF Normal mode.
OFF XPort CP1/RTS (pin 6) is connected to the RS-232 transceiver, which
connects to the CTS of an attached device through DB9 pin 8. Use this setting
if CP1 is set up for hardware flow control.
2
ON XPort CP1/RTS (pin 6) is not connected to an RS-232 transceiver. Use this
setting if CP1 is set up as an IN1, OUT1, or LED1.
OFF XPort CP2/DTR (pin 7) is connected to the RS-232 transceiver, which
connects to DCD of an attached device through DB9 pin 1. Use this setting if
CP2 is set up for hardware handshaking.
3
ON XPort CP2/DTR (pin 7) is not connected to the transceiver. Use this setting if
CP2 is set up as an IN2 or OUT2.
OFF Use this setting when XPort CP3/CTS/DCD (pin 8) is set up for hardware
handshaking. With SW1-5 configured appropriately, CP3 will connect to DTR
of an attached device.
4
ON Use this setting when XPort CP3/CTS/DCD (pin 8) is set up for hardware flow
control. With SW1-5 configured appropriately, CP3 will connect to RTS of an
attached device.
OFF XPort CP3/CTS/DCD (pin 8) is connected to the RS-232 transceiver, which
connects to either the DTR (DB9 pin 4) or the RTS (DB9 pin 7) of an attached
device, depending on the setting on SW1-4. Use this setting if CP3 is set up
for hardware flow control.
5
ON XPort CP3/CTS/DCD (pin 8) is not connected to the transceiver. Use this
setting if CP3 is set up as an IN3, OUT3, or LED3.
SW1-2 Options
SW1-2 controls the routing of the CP1/RTS (configurable pin 1) signal from the
XPort. CP1 is connected to pin 6 of the XPort and can be software configured as
CTS, IN1, OUT1, or LED1. SW1-2 is an input to the PLD, which does the actual
switching. The drawings represent the logical switching function.
In this drawing, SW1-2 is OFF, which connects XPort pin 6 to the RS-232
transceiver. The XPort configurable pin 1 (CP1) is configured for CTS.
Figure 3-1. SW1-2 OFF
In the next drawing, SW1-2 is ON, which disconnects pin 6 from the RS-232
transceiver. The XPort configurable pin 1 (CP1) is configured for LED1.

Development Kit
18 XPort™ Integration Guide
Figure 3-2. SW1-2 ON
When configurable pin 1 is configured for LED1, it functions as a status indicator for
the serial port.
Table 3-3. CP1 Status Indicator
Condition CP1 LED State
Idle channel Solid on
Connected to network 4 blinks every 4 seconds
CTS and RTS work together for hardware flow control. Configure CP3 as RTS when
CP1 is configured as CTS. Select hardware flow control as described in Flow in the
XPort User Guide. See the Device Installer User Guide for information on configuring
CP1 as IN1 or OUT1.
SW1-3 Options
SW1-3 controls the routing of the CP2/DTR (configurable pin 2) signal from the
XPort. CP2 is connected to pin 7 of the XPort and can be software-configured as
DCD, IN2, or OUT2. SW1-3 is an input to the PLD that does the actual switching. The
drawings represent the logical switching function.
In this drawing, SW1-3 is OFF, which connects XPort pin-7 to the RS-232
transceiver. The XPort CP2 is configured for DCD.
Figure 3-3. SW1-3 OFF
In the drawing below, SW1-3 is ON, which disconnects XPort pin-7 from the RS-232
transceiver. The XPort CP2 is configured for OUT2.
Figure 3-4. SW1-3 ON
See the Device Installer User Guide for information on configuring CP2 as IN2 or
OUT2.

Development Kit
XPort™ Integration Guide 19
SW1-4, SW1-5 Options
SW1-5 controls the routing of the CP3/CTS/DCD signal from the XPort. CP3 is
connected to pin 8 of the XPort, and you can software configure it as RTS, LED3,
DTR, IN3, or OUT3. With SW1-5 in the OFF position, the CP3 signal is routed to
SW1-4. SW1-4 and SW1-5 are inputs to the PLD, which does the actual switching.
The drawings represent the logical switching functions.
CP3 options are a little more complicated because both SW1-4 and SW1-5 are used
in the configuration setup. In this drawing, SW1-5 is OFF, which connects XPort pin-8
to the RS-232 transceiver. The XPort CP3 is configured for RTS. SW1-4 is ON,
routing the signal from XPort pin-8 to P1 pin-7 (RTS).
Figure 3-5. SW1-5 OFF and SW1-4 ON
In the next drawing, SW1-5 is ON, which disconnects XPort pin-8 from the RS-232
transceiver. The XPortCP3 is configured for LED3.
Figure 3-6. SW1-5 ON and SW1-4 ON
When CP3 is configured for LED3, it functions as a diagnostic indicator. The LED3
signal in combination with the LED1 signal indicates diagnostic information as shown
in the following table.
Note: CP1 must be configured for LED1, and CP3 must be configured for
LED3 for diagnostic mode.
Table 3-4. LED States
Condition CP3 LED (LED3) CP1 LED (LED1)
No errors OFF ON
Network controller error ON Blink 3x/4 sec OFF
Duplicate IP address present ON Blink 5x/4 sec OFF
No DHCP response Blink 2x/sec Blink 5x/4 sec OFF
Setup menu active Blink 2x/sec See Note.

Development Kit
20 XPort™ Integration Guide
Note: During a Telnet connection, CP1 LED (LED1) is ON. For a serial port
connection, CP1 LED (LED 1) blinks for 2 seconds, then OFF for
2 seconds. (It appears as 4 blinks, then OFF for 2 seconds)
CTS and RTS work together for hardware flow control. Configure CP3 as RTS when
CP1 is configured as CTS. Select hardware flow control as described in Flow in the
XPort User Guide.
See the Device Installer User Guide for information on configuring CP3 as IN3 or
OUT3. JP4 can be used to monitor XPort pins 6 (CP1), 7 (CP2), and 8 (CP3). You
can also use it to connect external circuitry or LEDs to the evaluation board.
Figure 3-7. JP4 Configurable Pins Interface Header Footprint
JP4
1
2
35
46
Table 3-5. JP4 Connections
JP4 Pin # Connects To
1 3.3V
2 XPort pin 7, CP2
3 Signal ground
4 XPort pin 6, CP1
5 External reset – XPort pin 3
6 XPort pin 8, CP3
Timer
The timer circuit is a National LMC555 IC. Its purpose is to generate a timer clock
(approximately 10 counts per second). This clock is routed to the input clock pin of
the PLD to be used for state machine and counter functions.