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TR-900 GSM/GPRS Module Development Starter Kit User Guide (For DSK version 3.0)
Date : 16 October 2008
Document Version : 3.0
Our Reference : 02000B25
CONFIDENTIAL
TR-900 GSM/GPRS Module Development Starter Kit User Guide
02000B25 • v3.0 Confidential
Document History
Revision Date Document History Associated
Hardware Version
1.0 20 Feb 08 Initial Release P1
1.1 9 May 08 • Updated Figure 1 P2
2.0 29 May 08 • Updated PWON timing P2
2.1 29 Aug 08 • Updated Power Supply Settings P2
3.0 14 Oct 08 Commercial Release
• Added DSK Board Schematic • Added DSK Component List • Added DSK Component Diagram • Added TR-900 Mechanical Drawing
P3
All specifications are correct at the time of release. iWOW Connections owns the proprietary rights to the information contained herein this
document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd. © 2008 iWOW Connections
Pte Ltd
TR-900 GSM/GPRS Module Development Starter Kit User Guide
02000B25 • v3.0 Confidential
All specifications are correct at the time of release. iWOW Connections owns the proprietary rights to the information contained herein this
document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd. © 2008 iWOW Connections
Pte Ltd
GENERAL NOTE
The aim of this document is to support the application and engineering efforts of iWOW’s customers.
This document is intended for testing, evaluation, integration, and information purposes.
iWOW makes every effort to ensure that the quality of the information is available. The content of this
documentation is provided on an “as is” basis and may contain deficiencies or inadequacies.
iWOW disclaims any warranty and all responsibility for the application of the device(s) that is made in
relation to the accuracy, reliability or contents of this document. iWOW is not liable for any injury, loss
or damage of any kind incurred for the use of or reliance upon information.
iWOW reserves the right to make any modifications, additions and deletions to this document due to
typographical errors, inaccurate information, or improvements to products at any time and without
notice.
TR-900 GSM/GPRS Module Development Starter Kit User Guide
02000B25 • v3.0 Confidential
TABLE OF CONTENTS
1 OVERVIEW .................................................................................................................... 1 1.1 Reference Documents ................................................................................................................... 1
2 TR-900 DEVELOPMENT STARTER KIT PACKAGE ................................................... 2
3 DEVELOPMENT STARTER KIT ................................................................................... 3 3.1 DSK Interfaces .............................................................................................................................. 4
4 GETTING STARTED ..................................................................................................... 5
5 POWER SUPPLY SETTINGS ....................................................................................... 6 5.1 External Power Supply .................................................................................................................. 6
6 EXTERNAL CONNECTORS ......................................................................................... 7 6.1 UART ............................................................................................................................................. 7
6.2 USB Connector ............................................................................................................................. 8
6.3 Audio Interface .............................................................................................................................. 9
6.4 SIM Holder................................................................................................................................... 10
6.5 Antenna ....................................................................................................................................... 11
6.6 60-Pin Connector ........................................................................................................................ 11
7 INDICATORS AND SERVICES ................................................................................... 12 7.1 LED .............................................................................................................................................. 12
7.2 Switches ...................................................................................................................................... 12
7.2.1 Power ON ........................................................................................................................ 12
7.2.2 Reset ............................................................................................................................... 12
8 QUICK SETUP ............................................................................................................. 13 8.1 Hyperterminal Configuration ........................................................................................................ 13
8.2 Testing On Short Message .......................................................................................................... 15
8.2.1 Send SMS ....................................................................................................................... 15
8.2.2 Receive SMS ................................................................................................................... 16
8.3 Set Up TR-900 as a Serial Modem ............................................................................................. 17
8.4 Establish a GSM Dial-Up Connection ......................................................................................... 19
8.5 Establish a GPRS Dial-Up Connection ....................................................................................... 22
9 SERVICES AND FIRMWARE UPGRADE .................................................................. 25
All specifications are correct at the time of release. iWOW Connections owns the proprietary rights to the information contained herein this
document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd. © 2008 iWOW Connections
Pte Ltd
TR-900 GSM/GPRS Module Development Starter Kit User Guide
02000B25 • v3.0 Confidential
All specifications are correct at the time of release. iWOW Connections owns the proprietary rights to the information contained herein this
document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd. © 2008 iWOW Connections
Pte Ltd
10 SUPPORT/ CONTACT US .......................................................................................... 26
APPENDIX A: TR-900 MECHANICAL DRAWING .............................................................. 27
APPENDIX B: DSK BOARD SCHEMATIC .......................................................................... 28
APPENDIX C: DSK COMPONENT PLACEMENT DIAGRAM ............................................ 30
APPENDIX D: DSK COMPONENT LIST ............................................................................. 31
TR-900 GSM/GPRS Module Development Starter Kit User Guide
02000B25 • v3.0 Confidential
1 OVERVIEW
The aim of this document is to provide information on the TR-900 Development Starter Kit (DSK).
This document acts as a guide to assist the development of customers’ products.
The DSK provides a quick start for iWOW module users to familiarize with the software and hardware
capabilities offered by the TR-900 GSM/GPRS module.
Please refer to TR-900 module supporting documents for more information.
1.1 Reference Documents
S/N Document Our Reference
1 TR-900 Product Technical Specifications 02000B22
2 TR-900 AT Commands Guide 02000B23
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
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2 TR-900 DEVELOPMENT STARTER KIT PACKAGE
The Development Starter Kit (DSK) package includes:
Item Quantity
TR-900 module (Mounted on board) 1
Universal power supply
• Input: 100~240VAC 50/60H • Output: 5.0VDC @ 1.0A
1
Quad-band GSM antenna with magnetic base (SMA-ended) 1
4-pole audio headset 1
RS-232 cable 1
USB Cable 1
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
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3 DEVELOPMENT STARTER KIT
J210
SIM Card Holder J203
SMA Antenna Connector
J201
Phone Audio Jack
TR-900 Module
PWON
RESET
J205
DC Supply Jack
J103 USB Connector
J102 UART Connector
Figure 1: Major Components on TR-900 DSK
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
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3.1 DSK Interfaces
TR-900 DSK supports the following interfaces:
• 60-pin board to board connector
• SMA jack for GSM antenna
• RF receptacle on board for RF connection to modules
• Power supply interface with 2 input source possibility:
• DC Supply Jack
• USB Connector
• 1 serial interface using D-SUB9 female connector
• 1 Serial USB interface (2.0)
• SIM card holder
• Power ON/OFF push button
• RESET signal push button
• LED indicators
• Phone audio jack
• Pins from the 60pin connector of TR-900 module
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
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4 GETTING STARTED
Step 1 Connect the RS-232 cable from host PC to Port 1 (for AT commands interface)
Step 2 Connect the GSM antenna to the SMA antenna connector of the DSK Board.
Step 3 Ensure that the RF Transition Cable is connected between the TR-900 module and the DSK Board.
Step 4 Ensure that the TR-900 module is properly mounted and its 4 ground legs are properly soldered on
the DSK.
Step 5 Connect the power supply to DSK Board. The DSK power supply LED will be lighted up when the
power is supplied.
Step 6 To set up connections between your PC and TR-900 DSK, please refer to the instructions in the
Section 8: Quick Setup.
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
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5 POWER SUPPLY SETTINGS
There are three ways to power up the DSK.
JP190, J290, J292 and J293 have to be configured with the table below for different power supply
modes:
Power Supply Modes JP293 JP190 JP292 JP290
By Battery Open Short Open Open
By External Power Supply Open Short Short Open
By USB Open Short Short Short
J292 Battery Selector
J290 Power from USB
Figure 2: Power Supply Circuit
5.1 External Power Supply
For external power supply, connect a DC Adaptor to the DC Supply Jack (J205).
Approved Reference: Hosiden’s HEC3350 dc power jack, 3.5~6.5VDC @ 500mA input.
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
© 2008 iWOW Connections Pte Ltd
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6 EXTERNAL CONNECTORS
6.1 UART
The UART Connector(J102) provides an RS-232 serial link to TR-900. This connection is used for
modem communication.
Pin #: 9 8 7 6
Pin #: 5 4 3 2 1
Figure 3: UART Connector
J102 is a Sub D 9-pin female connector. The table below indicates the signals relative to the pins.
Pin Number Signal I/O Description
1 DCD O Data Carrier Detect
2 RXD O Receive Data
3 TXD I Transmit Data
4 DTR I Data Terminal Ready
5 GND Ground
6 DSR O Data Set Ready
*This pin has been connected to GND on the DSK
7 RTS I Request to send
8 CTS O Clear to send
9 RI O Ring Indicator
Table 1: Pin-out of Sub D-9 Female Connector
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
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6.2 USB Connector
The USB connector used is Mini-USB Type B receptacle.
Pin #: 1 2 3 4 5
Figure 4: USB Connector
The table below indicates the signals relative to the pins.
Pin Number Signal I/O Description
1 VBUS O USB +5V Supply line
2 RXD I/O USB Positive line
3 TXD I/O USB Negative line
4 ID_USB I/O USB Connector Identification
5 GND - Ground
Table 1: Pin-out of USB Connector
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
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6.3 Audio Interface
There is 1 analog audio interface on TR-900. This is connected to a 4-pole audio headset jack (J201)
on the DSK.
Pin 1
Figure 5: Audio Headset Jack
The table below indicates the signals relative to the pins on the audio headset jack.
Pin Number Signal I/O Description
1 MICIN I Microphone negative input
2 EARP O Earphone positive output
3 MICIP I Microphone positive input
4 - NC
5 - NC
6 EARN O Earphone negative output
Table 1: Pin-out of Audio Headset Jack
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
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6.4 SIM Holder
The SIM holder (J210) is a 1.8V and 3V SIM holder. The holder includes the a SIM detect pin which is
connected to Ground when SIM Card is inserted.
Pin 1
Figure 6: SIM Card Holder
The table below indicates the signals relative to the pins on the SIM card holder.
Pin Number Signal I/O Description
1 VRSIM O SIM Power Supply
2 SIMRST O SIM Reset
3 SIMCLK O SIM Clock
4 SIMDTC I SIM Detect Pin
5 GND - Ground
6 VPP O Connected to Pin1
7 SIMIO I/O SIM Data
Table 1: Pin-out of SIM Card Holder
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
© 2008 iWOW Connections Pte Ltd
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6.5 Antenna
An external antenna can be connected to the board through the SMA antenna connector (J203). The
SMA connector at J203 is linked to an RF receptacle (J202).
To bridge link from board to TR-900, one end of an RF cable has to be attached to J202 and the other
end to the RF receptacle on the underside of TR-900.
J203
SMA Antenna Connector
J202
RF Receptacle
Figure 7: RF Input
6.6 60-Pin Connector
The 60 pins from TR-900 are pulled to various headers on DSK to facilitate testing and development.
Please refer to TR-900 Product Technical Specifications for more information on the 60-pin
connector.
All specifications are correct at the time of release. iWOW Connections owns the proprietary rights to the information contained herein this
document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
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7 INDICATORS AND SERVICES
7.1 LED
There are two LEDs available, with D201 indicating power status of DSK and D202 indicating the
module status.
D201 is a green LED that is controlled by the supply from either the DC Adaptor or USB supply.
D202 is lit when TR-900 is powered up.
7.2 Switches
7.2.1 Power ON Once power is supplied to the DSK through an external source, the PWON will provide “Vbatt” to TR-
900 when pressed for at least 35ms (i.e. “ON”)
After a 3 seconds press, TR-900 will be switched off.
7.2.2 Reset The reset button will start a hardware reset on TR-900 when pressed.
Please note that Reset is applicable only when TR-900 is “ON”.
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
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8 QUICK SETUP
8.1 Hyperterminal Configuration
Step 1
Open HyperTerminal (Start > Programs >
Accessories > Communications > HyperTerminal)
Enter TR900 and click OK.
Figure 8 Step 2
Select COM1 under Connect using.
Click OK.
Figure 9
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
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Step 3
Please ensure the following port settings are correct:
• Bits per second: 115200
• Data bits: 8
• Parity: None
• Stop bits: 1
• Flow control: Hardware
Once the settings are verified, click OK.
Figure 10 Step 4
Press the Reset button on the DSK Board.
Now you can communicate with the modem using AT
commands.
To test the communication, type
AT+CGMR<ENTER> You should get “AU001.0.1.0” or a similar response if
the setup is correct.
To check SIM card status, type
AT+CPIN?<ENTER>
Figure 11
To query the Network registration status and Operator
name, type
AT+CREG?<ENTER>
AT+COPS?<ENTER>
Figure 12
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
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8.2 Testing On Short Message
8.2.1 Send SMS
Step 1
Set the short message format as text mode:
AT+CMGF=1<ENTER>
Check if SMS service center (SMSC) number is set
to SIM card:
AT+CSCA?<ENTER>
Figure 13 Step 2
Set the new incoming SMS to be
displayed immediately:
AT+CNMI=2,2,0,0,0<ENTER>
Figure 14 Step 3
Send a message using this command:
AT+CMGS= “Phone number” <ENTER>Message<Ctrl-Z>
Figure 15
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
© 2008 iWOW Connections Pte Ltd
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
© 2008 iWOW Connections Pte Ltd
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8.2.2 Receive SMS
Step 1
Set the message format by typing
AT+CMGF=1 Step 2
Set the new incoming SMS to be
displayed immediately:
AT+CNMI=2,2,0,0,0<ENTER>
Figure 16 Upon receiving new SMS, it will be displayed
immediately on the TA.
Step 3
To enable new SMS indication instead of displaying
it directly on TA:
AT+CNMI=2,1,0,0,0<ENTER>
Upon receiving new SMS, +CMTI: “SM”, 1
indication will be given. This means the new SMS is
stored at location index 1 of the SIM card.
Figure 17 Step 4
To access SIM card storage for SMS:
AT+CPMS=”SM”<ENTER>
Step 5
To read SMS at location 1:
AT+CMGR=1<ENTER>
Figure 18
TR-900 GSM/GPRS Module Development Starter Kit User Guide
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8.3 Set Up TR-900 as a Serial Modem
To use the serial modem for Internet connection, either via GSM CSD or GPRS, you must first set it
up as a modem on COM1 on your PC. Otherwise, it will only be recognized as a device on COM1.
This section will detail how this can be done in the Win2000 environment. For other Windows OS,
similar steps apply.
Step 1
Go to Control Panels > Phone and Modem Options.
Select the Modems tab.
Click on Add….
Figure 19
Step 2
Ensure that the option “Don’t detect my modem. I will select it from a list” is checked.
Click Next.
Figure 20
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
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TR-900 GSM/GPRS Module Development Starter Kit User Guide
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Step 3
Select Standard 33600 bps modem for Models.
Click Next.
Step 4 Figure 21
Select COM1 and click Next. Ensure that COM1 is
the correct communication port for the serial port of
your PC.
Step 5
In the final screen, click Finish to complete the set
up for the serial modem on your PC. Figure 22
You should be able to see the recently created
modem in your Phone And Modem Options
screen.
To ensure that the correct communication
parameters have been set up, click on its
Properties.
Ensure the parameters are correct as below:
• Port Speed/Baud Rate: 115200
• Data Bits: 8
• Parity: None
• Stop Bit: 1
• Flow Control: Hardware Figure 23
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
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8.4 Establish a GSM Dial-Up Connection
After TR-900 has been set up as a serial modem as shown in the previous section, you can proceed
to create a GSM dial-up connection.
Step 1
Go to Control Panel > Network Connections.
Run the connection wizard and click Next.
Figure 24
Step 2
Select Connect to the Internet.
Click Next.
Figure 25 Step 3
Select Set up my connection manually and click
Next.
Figure 26
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
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Step 4
Select Connect using a dial-up modem and click
Next.
Figure 27 Step 5
Select Modem – Standard 33600 bps Modem (COM1) for dialing device.
Click Next.
Figure 28 Step 6
Enter a connection name and click Next.
Figure 29
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Step 7
Enter the phone number and click Next.
Figure 30 Step 8
Enter the user name and password if applicable.
Uncheck all three options and click Next.
Figure 31 Step 9
Click Finish to complete the set up.
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
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8.5 Establish a GPRS Dial-Up Connection
After TR-900 is set up as a serial modem as shown in Section 8.3, you can proceed to create a GPRS
dial-up connection.
Step 1
Go to Control Panel > Network Connections. Run the connection wizard and click Next.
Figure 32 Step 2
Select Connect to the internet and click Next.
Figure 33 Step 3
Select Set up my connection manually and click
Next.
Figure 34
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
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Step 4
Select Connect using a dial-up modem and click
Next.
Figure 35 Step 5
Enter a connection name and click Next.
Figure 36 Step 6
Enter “*99***1#” for Phone number. This is a fixed
GPRS connection dialing number for the module.
Click Next.
Figure 37
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TR-900 GSM/GPRS Module Development Starter Kit User Guide
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Step 7
Enter the user name and password if applicable.
Uncheck all three options and click Next.
Figure 38 Step 8
Click Finish to complete the set-up.
Step 9
From HyperTerminal, enter the network's APN
(Access Point Name) into the TR-900 module:
AT+CGDCONT=1,"IP","APN"<ENTER>.
Figure 39
The APN can be obtained from your network
operator.
Step 10
After this, use the following ATcommand to attach to
the GPRS network:
AT+CGATT=1.
You can now connect to the GPRS network using
Windows Dial-up connection created.
Figure 40
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
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9 SERVICES AND FIRMWARE UPGRADE
Firmware on TR-900 can be upgraded using the software “TR-900 Programmer” which is provided by
your local distributor.
There are two types of cable connection for upgrade of firmware on the DSK:
• USB Connection
• RS-232 Connection
Please refer to TR-900 Firmware Downloader Guide for more information.
For the latest firmware releases, please check with your local distributor or supporting Field
Applications Engineer (FAE) for more information.
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
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All specifications are correct at the time of release. iWOW Connections owns the proprietary rights to the information contained herein this
document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
© 2008 iWOW Connections Pte Ltd
26
10 SUPPORT/ CONTACT US
For distributor clients, please contact your respective distributor FAE.
For direct clients, please contact iWOW FAE (Technical Support Department) or email us
For general enquiries please contact us at:
iWOW Connections Pte Ltd 1 Lorong 2 Toa Payoh, #04-01 Yellow Pages Building Singapore 319637 Office: (65) 6748 8123 Fax : (65) 6748 2668 Email: [email protected] Website: http://www.iWOW.com.sg
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APPENDIX A: TR-900 MECHANICAL DRAWING
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APPENDIX B: DSK BOARD SCHEMATIC
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02000B25 • v3.0 Confidential
APPENDIX C: DSK COMPONENT PLACEMENT DIAGRAM
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document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
© 2008 iWOW Connections Pte Ltd
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TR-900 GSM/GPRS Module Development Starter Kit User Guide
02000B25 • v3.0 Confidential
All specifications are correct at the time of release. iWOW Connections owns the proprietary rights to the information contained herein this
document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
© 2008 iWOW Connections Pte Ltd
31
13BAPPENDIX D: DSK COMPONENT LIST
Item Reference Value Description
1 C103 10u Monolithic Ceramic Capacitors 0805,
X5R, 10uF, 10Vdc, +/-10%
2 C104 3300u Aluminium Capacitor 3300uF 6.3V
3 C208 33u Tant Cap 16V ±10%
4 C206 68u/16V Tant Cap 16V ±10%
5 C120 100u Monolithic Ceramic Capacitors,X5R
100uF, 6.3V +/- 20%
6 C119 22n Cap Cer Multilayer 22nF 16V +/-10%
0402 X7R
7 C119 22p Capacitor, Ceramic, Multilayer, 50 V,
CH, 0.000022 uF,
Surface Mount, 0402
8 C124,C211 4u7 High Capacitance SMD Ceramic Chip
Capacitors 0805 4.7uF 10volts X5R
10%
9 C106 1 nF Monolithic Ceramic Capacitors 0402,
X7R, 1nF, 50Vdc, +/-10%
10 C105 1 uF Monolithic Ceramic Capacitors 0402,
X5R, 1uF, 6.3Vdc, +/-10%
11 C127 10 nF Monolithic Ceramic Capacitors 0402,
X7R, 10nF, 25Vdc, +/-10%
12 C107 2.2 uF High Capacitance SMD Ceramic Chip
Capacitors 0603 2.2uF 16volts X5R
10%
13 C102 C108-117 100n Monolithic Cer Cap 100nF 10V +/-10%
0402 Y7R
14 C207 100p Monolithic Cer Cap 10pF 50V +/-5%
0402 COG
15 C201 C204 18p Monolithic Cer Cap 18pF 50V +/-5%
0402 COG
16 C101 C118 C202-203
C205
33p Monolithic Cer Cap 33pF 50V +/-5%
0402 COG
17 J101 CON60 60 pin connector, 0.5pitch
18 J102 MODEM PORT DSUB-9 Right-angle socket connector
TR-900 GSM/GPRS Module Development Starter Kit User Guide
02000B25 • v3.0 Confidential
All specifications are correct at the time of release. iWOW Connections owns the proprietary rights to the information contained herein this
document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
© 2008 iWOW Connections Pte Ltd
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19 J103 Mini USB B USB Recepticle mini-B
20 J201 PHONE JACK 4-pole Audio Headset Jack
21 J202 RF_RECPTCL Ultra-miniature SMT UMCA Coax
Receptacle
22 J203 SMA_JACK SMA Jack with Stand-off pads
23 J205 DC_JACK 2-pole DC Power Jack
24 J210 SIMCARD_CON SIM Connector, 6pins with locking
detection switch
25 L201-202 100nH Ind High Frequency Monolithic 100nH
?0% 0402
26 R111 0.22R Res Thick Film 0.22 1/4W +/-1% 0805
27 R112 47R Res Thick Film 47 1/16W ?% 0402
28 R204 R208 R210 R101
R115 R213
10K Res Thick Film 10K 1/16W 5% 0402
29 R102-108 R202-203 1K Res Thick Film 1k 1/16W ?% 0402
30 R209 22K Res Thick Film 22k 1/16W ?% 0402
31 R209 47K Res Thick Film 47k 1/16W ?% 0402
32 R109 1M5 Res Thick Film 1M5 1/16W +/-5% 0402
33 R113-114 27R Res Thick Film 27R 1/16W 5% 0402
34 R110 51R Res Thick Film 51R 1/16W +/-5% 0402
35 R201 0 Ohm 0402 5%
36 R211-212 100K 0402 5%
37 Q101 0 Ohm Diode MOSFET P-Channel 1.8V with
Schottky Diode 1208-8 ChipFET
38 Q101 2SC4667 NPN BJT Transistor
39 S201-202 B3S-1000 Mechanical key switch - -SPBO B3S
series
40 U101 TPS79333DBVR low-dropout (LDO) low-power linear
voltage regulators features high power
supply rejection ratio (PSRR), ultralow
noise, fast start-up, and excellent
line and load transient responses in a
small outline
41 U102 ADM3307E 4-Bit Dual-Supply BUS Transceiver
With Configurable VLT
Translation and 3-State Outputs
42 U103-104 SN74AVC4T245PWE4 4-Bit Dual-Supply BUS Transceiver
With Configurable VLT
TR-900 GSM/GPRS Module Development Starter Kit User Guide
02000B25 • v3.0 Confidential
All specifications are correct at the time of release. iWOW Connections owns the proprietary rights to the information contained herein this
document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd.
© 2008 iWOW Connections Pte Ltd
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Translation and 3-State Outputs
43 U201 LP3964 800mA Fast Ultra LDO Linear Regulator
44 D101 uClamp0501H USB Varistor
45 D102-104 USB0005WP USB Varistor
46 D201-202 LED Chip LED
47 JP201 JP203-258
JP260 JP263-266
- 2 pin Header
48 JP190-
192,JP290,JP292-296
- 2 pin Header x 1