XE8000EV121 Semtech, XE8000EV121 Datasheet

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... ADVANCED COMMUNICATIONS & SENSING SX8723/24/25 Evaluation Tools XE8000EV121 V1.7 © 2008 Semtech Corp. SX8723/24/25 Evaluation Tools XE8000EV121 User’s Guide 1 Users Guide www.semtech.com ...

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... Framework 2.0 ...................................................................................................................................4 2.1.2 FTDI USB drivers ........................................................................................................................................4 2.2 Connecting the board for the first time ........................................................................................................5 2.3 How to determine which com port has been assigned to the XE8000EV121 board ..................................8 3 Hardware description ...............................................................................................................................9 3.1 XE8000EV121 Board features ....................................................................................................................9 3.2 Communication between PC, Gateway and SX8723/24/25 .......................................................................9 3 ...

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... Figure 4 GUI after Serial COM port is opened.........................................................................................................7 Figure 5 Windows Device manager .........................................................................................................................8 Figure 6 Hardware block diagram ............................................................................................................................9 Figure 7 XE8000EV121 board overview................................................................................................................11 Figure 8 Power supply matrix.................................................................................................................................12 Figure 9 XE8000EV121 power supply selector .....................................................................................................12 Figure 10 GUI Startup window ...............................................................................................................................14 Figure 11 SX8723/24/25 ZoomingADC Tab ..........................................................................................................16 Figure 12 "Overview" sub tab.................................................................................................................................17 Figure 13 "Inputs" sub tab......................................................................................................................................17 Figure 14 " ...

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... The GUI needs the .NET Framework 2.0 to work properly. The installer proposes to install it, if the installer is unable to detect it on your system. 2.1.2 FTDI USB drivers The XE8000EV121 board uses a USB to UART converter from FTDI-Chip thus to the board work properly the USB drivers must be installed. If the USB drivers are not detected on your PC their installation will be proposed. ...

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... Note: Ensure that the jumper at the right of the power switch is either connected on 2.5V, 3.3V or 5V_USB. Note: The first time you connect the kit, the system will install your XE8000EV121 connection as a new Serial COM port device. ...

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... ADVANCED COMMUNICATIONS & SENSING Select the Serial COM port corresponding to your XE8000EV121 board on the GUI toolbar. Click on “Open COM” button located on the GUI toolbar. V1.7 © 2008 Semtech Corp. SX8723/24/25 Evaluation Tools XE8000EV121 Figure 2 Serial COM port selection Figure 3 Open Serial COM port ...

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... ADVANCED COMMUNICATIONS & SENSING Once the Serial COM port is open the application will read all the SX8723/24/25 registers in order to update the GUI. Figure 4 GUI after Serial COM port is opened V1.7 © 2008 Semtech Corp. SX8723/24/25 Evaluation Tools XE8000EV121 7 Users Guide www.semtech.com ...

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... Develop the “Ports (COM&LPT)” section • Switch ON and OFF the XE8000EV121 board • The Serial COM port assigned to the XE8000EV121 is the one that disappears and reappears each time. V1.7 © 2008 Semtech Corp. SX8723/24/25 Evaluation Tools XE8000EV121 Figure 5 Windows Device manager ...

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... The gateway fetches the ADC measured value (using I2C connection with SX87xx). 3- The gateway will send a data frame with the measured value to the PC via the UART. Cmd req PC Cmd resp Data V1.7 © 2008 Semtech Corp. SX8723/24/25 Evaluation Tools XE8000EV121 Cmd req USB Gateway Cmd resp to UART ...

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... Note: The input analog voltages are specified in the SX8723/24/25 datasheet. 1 Can be regulated to 5.0, 3.3 and 2 Can be regulated to 3.3 and 2.4 Volts 3 When jumper EXT_POW is connected 4 Max current, all LEDS on 5.5V, SX8723/24 full speed, GUI connected. V1.7 © 2008 Semtech Corp. SX8723/24/25 Evaluation Tools XE8000EV121 Typ Max 5 ...

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... Onboard optional reference Application chip Analog interface 3.4.1 Power supply The XE8000EV121 board provides a lot power supply voltage possibilities; the following paragraphs describe how to configure and use them. 3.4.1.1 Power sources The board can be powered through four different power sources: 1. USB: USB power coming from the PC ...

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... IMPORTANT: DO NEVER CONNECT EXT_POW JUMPER IF VDD_EXT IS HIGHER THAN 5.5VDC The picture below shows the selector. User should place the jumper on the desired SX8723/24/25 supply voltage value. Figure 9 XE8000EV121 power supply selector Note: Use only one jumper at the same time on the power supply selector. V1.7 © 2008 Semtech Corp. ...

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... It is configured to provide a reference voltage of 2.5V. To set other voltages, please refer to SC431 datasheet and adjust the reference with R8 & R9 resistors. V1.7 © 2008 Semtech Corp. SX8723/24/25 Evaluation Tools XE8000EV121 The analog interface gives access to the SX8723/24/25 analog pins. The connections points are available on industrial PCB ...

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... ADVANCED COMMUNICATIONS & SENSING 4 SX87xx Evaluation Tools Graphical user Interface (GUI) The GUI enables the user to interact with the XE8000EV121 and the Application board. 4.1 Overview The GUI gives a complete overview of the current SX8723/24/25 configuration plus the ability to control it. The GUI is mainly divided in 4 sections: 1 ...

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... Browse button let the user choose where to store the log file and which name it will have. c. Start button starts the logging process. While the logging process is running a progress bar will show the progress. V1.7 © 2008 Semtech Corp. SX8723/24/25 Evaluation Tools XE8000EV121 15 Users Guide www.semtech.com ...

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... The SX8723/24/25 Registers section is composed of 2 tab pages that enable the user to modify or read the actual SX8723/24/25 settings. The ZoomingADC tab enables the user to see the ZoomingADC registers detailed by function and also the corresponding hexadecimal registers value. Figure 11 SX8723/24/25 ZoomingADC Tab V1.7 © 2008 Semtech Corp. SX8723/24/25 Evaluation Tools XE8000EV121 16 Users Guide www.semtech.com ...

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... On this sub tab the user may also choose if the inputs are “Single-ended” or “Differential” as well as choosing which of the inputs is used as “Positive” or “Negative” input. V1.7 © 2008 Semtech Corp. SX8723/24/25 Evaluation Tools XE8000EV121 Figure 12 "Overview" sub tab Figure 13 "Inputs" sub tab ...

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... The user has also the possibility to decide if the ADC will work in one shot or in continous mode. When the Read button is pressed the last ADC converted value is also displayed in this sub tab. V1.7 © 2008 Semtech Corp. SX8723/24/25 Evaluation Tools XE8000EV121 Figure 14 "PGA" sub tab Figure 15 "ADC" sub tab ...

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... If the user double-clicks on the graphic it will expand until it fills the whole ZoomingADC tab space. (See Figure bellow). The “Back” button will reduce the graphic and will show again the ZoomingADC configuration. V1.7 © 2008 Semtech Corp. SX8723/24/25 Evaluation Tools XE8000EV121 Figure 16 Expanded ADC graphic 19 Users Guide ...

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... Zoom +, If the user draws a rectangle in the graphic and then release the mouse button the graphic will zoom the signal inside the rectangle. V1.7 © 2008 Semtech Corp. SX8723/24/25 Evaluation Tools XE8000EV121 Figure 17 Zoom + Figure 18 After zoom + 20 Users Guide ...

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... Move the zoomed window. To move the zoomed window the user must select the corresponding button and then click on the graphic without releasing the button and move the mouse. Figure 20 After the graphic has been moved V1.7 © 2008 Semtech Corp. SX8723/24/25 Evaluation Tools XE8000EV121 Figure 19 After Zoom - 21 Users Guide ...

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... Figure 21 SX8723/24/25 Registers General Tab 4.1.4 Status bar (4) The Status bar will display application errors that may happen while using the GUI. If there is no error the status bar shows a “-“sign. V1.7 © 2008 Semtech Corp. SX8723/24/25 Evaluation Tools XE8000EV121 22 Users Guide www.semtech.com ...

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... If the user disconnects the USB cable or shuts down the Evaluation board a Windows error message may appear when the GUI is closed or the user closes the Serial Port. Solution: None. V1.7 © 2008 Semtech Corp. SX8723/24/25 Evaluation Tools XE8000EV121 23 Users Guide www.semtech.com ...

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... ADVANCED COMMUNICATIONS & SENSING 6 XE8000EV121 board 6.1 Schematics V1.7 © 2008 Semtech Corp. SX8723/24/25 Evaluation Tools XE8000EV121 Figure 22 XE8000EV121 board schematic 24 Users Guide www.semtech.com ...

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... ADVANCED COMMUNICATIONS & SENSING 6.2 Physical dimensions The XE8000EV121 layers board. Thickness: 1 Figure 23 XE8000EV121 physical dimensions V1.7 © 2008 Semtech Corp. SX8723/24/25 Evaluation Tools XE8000EV121 Users Guide www.semtech.com ...

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... Contact Information Advanced Communication and Sensing Products Division Phone (805) 498-2111 Fax : (805) 498-3804 V1.7 © 2008 Semtech Corp. SX8723/24/25 Evaluation Tools XE8000EV121 Semtech Corporation 200 Flynn Road, Camarillo, CA 93012 26 Users Guide ...