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Summary of Contents for Semtech SX1211-11SKA
- Page 1 User’s Guide SX1211-11SKA ADVANCED COMMUNICATIONS & SENSING SX1211-11SKA User’s Guide: Advanced Mode Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com...
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Page 2: Table Of Contents
The RxParam Tab ............................17 4.11 The TxParam Tab ............................19 4.12 The OscParam Tab ............................20 4.13 The Packet Test Tab............................. 20 Schematics and 2-Layer PCB Layout: SX1211SKA................. 23 References ..............................25 Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com... - Page 3 Figure 18. The Transmitter Parameter Tab Display.....................19 Figure 19. The Oscillator Parameter Display .......................20 Figure 20. The Packet Receiver / Transmitter Test Display ..................21 Figure 21. Software Display: Successful Packet Mode Reception ................22 Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com...
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Page 4: Introduction
Wide RSSI (Received Signal Strength Indicator) dynamic range, 70dB from Rx noise floor Bit rates up to 200 kb/s, NRZ coding On-chip frequency synthesizer FSK and OOK modulation Incoming sync word recognition Built-in Bit-Synchronizer for incoming data and clock synchronization and recovery Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com... -
Page 5: Getting Started
2.1 Kit Contents As illustrated in the figure below, the SX1230-11SKA Evaluation kit is composed of: A pair of SX1211SKA boards SX1211-11SKA CDROM including all necessary PC software and documentation Figure 2. SX1211SKA Contents 2.2 Installation SX1211SKA Advanced Mode Software Installation 1- Put the CDROM in your computer and browse the contents of the CD. -
Page 6: Sx1211Ska Overview
‘A’ interface (5) of a host PC. Indication of transmission and reception is indicated on a pair of LEDs (4). A Johanson Technologies ceramic antenna is employed (2) and optional provision for an SMA connector (not populated) is provided for laboratory testing. Figure 3. SX1211SKA Board Picture Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com... -
Page 7: Quick Start Guide
4. Once connected the SX1211SKA shows the default configuration of the SX1211 register settings upon power-up. Figure 4. SX1211 User Interface, Default Settings 5. Once connected the SX1211SKA shows the default configuration of the SX1211 register settings upon power-up (as shown in Figure 4). Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com... -
Page 8: Figure 5. The New Sx1211 Configuration: Ready To Be Written
As a double check, the register read button may be pressed – the values presented on the user interface should remain unchanged. Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com... -
Page 9: Sx1211Ska Receive Mode Configuration
Start button. At this point the SX1211SKA enters packet receive mode and is now listening for valid packets. At this juncture another SX1211SKA must be configured as transmitter. Figure 6. The SX1211SKA User Interface whilst in Packet Receiver Mode Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com... -
Page 10: Sx1211Ska Transmit Mode Configuration
4. The successful reception of packets will be indicated in the ‘Rx packets’ window of the receiver SX1211SKA. Figure 7. The SX1211SKA User Interface Ready to Transmit the Demonstration Packet Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com... -
Page 11: Sx1211Sxa Software Description
The Help menu contains two menu items. The first item provides a link to this user guide in PDF format. The second, About SX1230 Starter kit…, gives information in the revision of the software installed. Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com... -
Page 12: Shortcut Buttons
The saved configuration files are designed to be a useful tool for embedded software development. The file can be opened in any text editor to display the programmed register name, address and hexadecimal value programmed to that address. Figure 9. Example Text Editor Output of the SX1211 Configuration File Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com... -
Page 13: Text Field Conventions For The Sx1211Ska
Packet Test (see Section 4.13). Gain of the IF Stage The gain of the intermediate frequency amplifier chain can be adjusted manually. Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com... - Page 14 By entering the desired operating frequency in the text field at the top of the display, the resultant R, P and S divider ratios are calculated (see the SX1211 datasheet for information on their calculation). Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com...
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Page 15: Overview Panel
SX1211 registers appear in red. Note, also, that for full control flexibility, incorrect (red) values entered in the hexadecimal section will still be written in the event of a register ‘write’. So care must be exercised when editing the hexadecimal values. Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com... -
Page 16: The Mode Control Box
The third, rightmost, section of the mode control box allows an instantaneous RSSI (received signal strength indicator) measurement. Please note that this feature is only accessible when the SX1211 is in the receiver operating mode. Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com... -
Page 17: The Irqparam Tab
SX1211 receiver is shown in figure Figure 15. The settings configurable in the receiver parameter tab correspond to the programmable baseband receiver functions. Figure 15. SX1211 Receiver Block Diagram, the Colours Correspond to the Frequency of Operation. Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com... -
Page 18: Figure 16. Receiver Parameter Display
OOK demodulation is based upon measurements from the RSSI block and there are a rich variety of settings for how the OOK signal is detected and processed. These techniques and the corresponding settings are given a detailed treatment in the SX1211 datasheet. Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com... -
Page 19: The Txparam Tab
The cut-off frequency of the interpolation filters can be selected from the drop down menu of valid values. The technique for calculating the cut-off frequency may be found in the SX1211 datasheet. Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com... -
Page 20: The Oscparam Tab
‘Transmission’ radio button. This starts when the ‘Start’ button is pressed. Either infinite transmission (repeat value = 0) or a finite number of packets may be transmitted by editing the repeat value. Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com... -
Page 21: Figure 20. The Packet Receiver / Transmitter Test Display
For indication of the signal strength received by the SX1211SKA, the RSSI display (see Section 4.8) is activated and continuously refreshed. By way of example, Figure 21 shows the entire user interface display whilst receiving a valid packet payload. Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com... -
Page 22: Figure 21. Software Display: Successful Packet Mode Reception
User’s Guide SX1211-11SKA ADVANCED COMMUNICATIONS & SENSING Figure 21. Software Display: Successful Packet Mode Reception Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com... -
Page 23: Schematics And 2-Layer Pcb Layout: Sx1211Ska
User’s Guide SX1211-11SKA ADVANCED COMMUNICATIONS & SENSING 5 Schematics and 2-Layer PCB Layout: SX1211SKA Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com... - Page 24 User’s Guide SX1211-11SKA ADVANCED COMMUNICATIONS & SENSING Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com...
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Page 25: References
User’s Guide SX1211-11SKA ADVANCED COMMUNICATIONS & SENSING 6 References [1] SX1211 Datasheet Revision 0.1 March 2009 © 2009 Semtech Corp. www.semtech.com... - Page 26 BE UNDERTAKEN SOLELY AT THE CUSTOMER’S OWN RISK. Should a customer purchase or use Semtech products for any such unauthorized application, the customer shall indemnify and hold Semtech and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs damages and attorney fees which could arise.
- Page 27 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Semtech SX1211SKA915 SX1211-11SKA868 SX1211SKA868 SX1211-11SKA915...
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