Texas Instruments TSW4100EVM User manual

User's GuideSLWU052A – December 2007 – Revised September 2008
TSW4100EVM
Contents1 Introduction ................................................................................................................... 32 TSW4100 Interfaces ......................................................................................................... 52.1 USB Port J26 ........................................................................................................ 52.2 USB Connector J25 ................................................................................................ 53 Hardware Configuration ..................................................................................................... 53.1 Power Requirements ............................................................................................... 53.2 Jumper Settings ..................................................................................................... 53.3 Apply Power to Board .............................................................................................. 64 Software Installation ......................................................................................................... 64.1 Installing the TSW4100 Interface to GC5016 CDC and DAC Software ..................................... 74.2 Installing the USB Driver Software ............................................................................... 74.3 Installing the MATLAB Runtime Engine ......................................................................... 84.4 Installing the TSW4100GUI Software........................................................................... 115 Running the TSW4100 CDC and DAC Interface ....................................................................... 145.1 Starting the TSW4100 Interface ................................................................................. 145.2 Loading the CDCM7005 with Default Values .................................................................. 155.3 Loading the DAC5688 ........................................................................................... 166 TSW4100 Graphical User Interface (GUI) Software ................................................................... 206.1 Starting the TSW4100GUI ....................................................................................... 206.2 Graphical User Interface Controls ............................................................................... 226.3 Filter Response Windows ........................................................................................ 267 Designing and Testing a Filter (Step-by-Step) ......................................................................... 277.1 Step 1—Start TSW4100GUI ..................................................................................... 277.2 Step 2—Channel Selection ...................................................................................... 287.3 Step 3—Selecting Filter Design Parameters .................................................................. 287.4 Step 4—Saving Filter Design Information ...................................................................... 297.5 Step 5—Running the Filter Design .............................................................................. 297.6 Step 6—Briefly Examining the Filter Response Windows ................................................... 297.7 Step 7—Examine the Filter Response Passband ............................................................. 317.8 Step 8—Evaluate Effect of Taps on Filter Latency ........................................................... 327.9 Step 9—Redesign by Decreasing the CIC Decimation ...................................................... 337.10 Step 10—Redesign by Changing the Filter Parameters ..................................................... 358 Programming the TSW4100 .............................................................................................. 378.1 Connecting an input source and output analyzer ............................................................. 378.2 Program clock PLL and DAC .................................................................................... 388.3 Programming the DUC and DDCs .............................................................................. 398.4 Setting the Sync Delay for a Channel .......................................................................... 408.5 Calibrating the Sync Delay Using an Oscilloscope ........................................................... 428.6 Calibrating the Sync Delay Using an Spectrum Analyzer .................................................... 498.7 Requirement for Nyquist Filtering for the ADC ................................................................ 518.8 Adding Other Channels ........................................................................................... 528.9 Using Other Nyquist Zones ...................................................................................... 53Appendix A Firmware Downloading (if updates are needed) ............................................................. 55Appendix B Bill of Materials .................................................................................................... 58EP2C8 Cyclone II, EPCS4, ByteBlaster II, Quartus II are trademarks of Altera Corporation.
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List of Figures
1 TSW4100 Block Diagram ................................................................................................... 42 Choose Setup Language ................................................................................................... 83 MATLAB Welcome Screen ................................................................................................. 84 Customer Information ....................................................................................................... 95 Destination Folder ........................................................................................................... 96 Ready to Install the Program ............................................................................................. 107 InstallShield Wizard Completed .......................................................................................... 108 TSW4100 Installation Welcome .......................................................................................... 119 TSW4100 License Agreement ............................................................................................ 1110 Customer Information ...................................................................................................... 1211 Setup Type .................................................................................................................. 1212 Ready to Install the Program ............................................................................................. 1313 InstallShield Wizard Completed .......................................................................................... 1314 TSW4100 CDC/DAC Graphical User Interface......................................................................... 1415 CDCM7005 Interface ...................................................................................................... 1516 DAC5688 Interface ......................................................................................................... 1717 DAC5688 Options .......................................................................................................... 1818 DAC5688 Filters ............................................................................................................ 1819 Clock Settings .............................................................................................................. 1920 DAC Gain .................................................................................................................... 1921 SIF Control .................................................................................................................. 2022 TSW4100GUI DOS Test Window ........................................................................................ 2123 TSW4100GUI Interface .................................................................................................... 2124 General Settings Controls ................................................................................................. 2225 Status area .................................................................................................................. 2226 Left Column Interface Controls ........................................................................................... 2327 Channel Selection Controls ............................................................................................... 2328 Channel Configuration Controls .......................................................................................... 2429 Filter Load and Design Settings .......................................................................................... 2530 (Figure 2*N–1 Window) Frequency Response Before CIC Compensation and Quantitization .................. 2631 (Figure 2*N window) Frequency Response with Convolved End to End Response .............................. 2732 Channel Selection Controls ............................................................................................... 2833 CIC Decimation Rate ...................................................................................................... 2834 Filter Design Parameters .................................................................................................. 2835 Save Filter Design and Responses ...................................................................................... 2936 DDC (TX) and DUC (RX) PFIR Responses - Before CIC Correction Convolution ............................... 3037 Composite Frequency Response ........................................................................................ 3038 Passband for the Composite Frequency Response ................................................................... 3139 Define the Passband Area to Magnify ................................................................................... 3140 Magnified Filter Passband ................................................................................................ 3241 PFIR Tap and Filter Latency ............................................................................................. 3342 Redesigned Filter Settings ................................................................................................ 3343 Redesigned Filter Response (without CIC Compensation) ........................................................... 3444 Redesigned Filter Passband .............................................................................................. 3445 Redesigned Filter Stopband .............................................................................................. 3546 Passband of Successful Filter Design ................................................................................... 3547 Complete Response of Successful Filter Design ...................................................................... 3648 Filter Latency................................................................................................................ 3649 Filter with Reduced Stopband ........................................................................................... 3750 DAC Stand Alone Test Spectrum ........................................................................................ 3851 TSW4100 Interface with Filter Design Settings ........................................................................ 3952 Filter Design Output Spectrum ........................................................................................... 4053 Proper DDC Output and DUC Input Timing Alignment ................................................................ 4054 DUC Input Time ............................................................................................................ 4155 Test Points .................................................................................................................. 42
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1 Introduction
www.ti.com Introduction
56 Starting Interface Timing for Channel 1 ................................................................................. 4357 Channel 1 Interface Timing After a Sync Delay of 96 ................................................................. 4458 Channel 1 Interface Timing With a Sync Delay of 96 and Negative SCK Polarity ................................ 4559 Starting Interface Timing for Channel 3 ................................................................................. 4660 Channel 3 Interface Timing With a Sync Delay of 129 ................................................................ 4761 Incorrect Interface Timing for a Decimation of 6 and SCK Divider Ratio of 2 ...................................... 4862 Correct Interface Timing for a Decimation of 6 and SCK Divider Ratio of 2 ....................................... 4863 4 Phases Where Only I or Q Are Transferred .......................................................................... 5064 2 Phases Where Only I or Q Are Transferred .......................................................................... 5065 With and Without an ADC Filter to Remove Output Frequency Harmonics ........................................ 5166 Multiple Channel Configuration ........................................................................................... 5267 Multiple Channel Example on Spectrum Analyzer ..................................................................... 5368 TSW4100GUI Settings to Generate Third Nyquist Zone .............................................................. 5469 Third Nyquist Zone Example Output Spectrum ........................................................................ 54A-1 Quartus II Programming Interface ........................................................................................ 55A-2 Hardware Setup Window .................................................................................................. 56A-3 EP2C8 Device Detected ................................................................................................... 57
List of Tables
1 Two Pin Jumper List ........................................................................................................ 52 Three Pin Jumper List ....................................................................................................... 53 Jumper J15 List .............................................................................................................. 64 Channel Selection Options ............................................................................................... 245 Nyquist Zone Frequencies and DAC Settings .......................................................................... 246................................................................................................................................ 49A-1 JTAG Connector J14 Pinout .............................................................................................. 57B-1 TSW4100 Bill of Materials ................................................................................................. 58
The TSW4100 contains a signal chain consisting of an ADC, DDC, DUC, and DAC to create a repeaterapplication. The design has a clock distribution solution, and an interface for programming and readingprogrammable devices on the TSW4100 with a PC. In addition to the interfaces, the TSW4100 providestest connectors, which can be used to monitor the RX outputs or provide inputs to the TX portion of thechain.
The TSW4100 requires only a single 5-6 V DC power source at 3 A to operate.
The block diagram of the TSW4100 is shown in Figure 1 .
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14bit ADC
GC5016
DDC
Analog
Input
CDCM
7005
FPGA
Ext_Sync
In
CK
SIA
SIB SOB
DUC SIA
Filter
VCXO- 160
Mux
10Mhz
Ext
10
Mhz
Xfor
mer
EXT
CLK
CFS,CCK
COUT[15..0]
DOUT [15..0]
XFM
R
SPLIT IQ PARALLEL
,
(2) INTER IQ
(2) SPLITIQ-(4) DDC
TDM- DDC
FPGA
LOGIC ANALYZER TEST CONNECTOR
DB25& USB
PARALLEL& USB PORTs
CONTROL
BUS
GC5016
DUC
AFS,ACK
AIN [15..0]
BIN [15..0]
DAC5688
AOUT[15..0]
BOUT[15..0]
IFLG QFLG
ADC_SPI
CDC_SPI
GC5016DUC_CLK
DAC CLK1
DAC CLK2
CONTROL
BUS
SIA
GC5016DUC_CLK
DUC SIA SOB
SIB
FLASH
eprom
DAC_SPI
Xfor
mer
Xfor
mer
REAL IF
1
Or I
REAL IF2
Or Q
DAC_SYNC
CPLD_CLK
Xfor
mer
Xfor
mer
JTAG
CONNECTOR
CLK
A & B OUT[15..0] C & D IN [15..0]
Introduction www.ti.com
Figure 1. TSW4100 Block Diagram
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2 TSW4100 Interfaces
2.1 USB Port J26
2.2 USB Connector J25
3 Hardware Configuration
3.1 Power Requirements
3.2 Jumper Settings
www.ti.com TSW4100 Interfaces
USB port connector J26 provides a PC interface to allow writes and reads between a PC/Laptop and theFPGA and the two GC5016 (SLWS142 ) devices. This interface helps program the two GC5016 deviceswith existing software provided by TI. The parallel port connector provides the same functionality whenconfigured. The default TSW4100 configuration has the USB port enabled and leaves the parallel portdisabled.
USB connector J25 provides a PC interface to allow writes and reads between a PC/Laptop and theDAC5688 and the CDCM7005 (SCAS793 ) devices. There is an option to allow this interface to write to theADS5545 (SLWS180 ) device when configured for serial interface, but the board has this part configuredfor parallel interface mode. With this configuration, the part operation is determined by jumpers.
By using the provided software and on-board jumpers, the TSW4100 can be set up in a variety ofconfigurations to accommodate a specific operation mode. Before starting evaluation, the user shoulddecide on the configuration and make the appropriate connections and load the appropriate parametersfor the GC5016's, DAC5688, ADS5545, and CDCM7005 devices.
The TSW4100 requires 5V-6V DC at approximately 3.0 Amps. The board contains several on-boardregulators that generate the necessary voltages from the 5V-6V DC source The board provides bananajacks J4 (red) and J5 (black) for use with a separate power supply. When using this mode, connect5V-6V DC to J4 and the return to J5.
The board jumper description and default settings are shown in Tables 1, 2, and 3. Details of the softwareoperation modes can be found in the software section of this document. Table 1 ,Table 2 , and Table 3explain the functionality of the board jumpers.
Table 1. Two Pin Jumper List
Jumper Function Installed Removed Default
J7 DUC clock input test point N/A N/A N/AJ10 DDC clock input test point N/A N/A N/AJ18 Sets Parallel port J2 interface device drive mode Open drain Totem pole RemovedJ19 Used to disable VCXO U19 when providing external oscillator at Enables U19 Disables U19 InstalledJ20
Table 2. Three Pin Jumper List
Jumper Function Location: Pins 1-2 Location: Pins 2-3 Default
JP7 CDCM7005 reference select Reference clock provided by J21 Reference clock provided by Y1 2-3or Y2JP5 CDCM7005 complimentary clock input select Clock provided from Input connected to VBB of 1-2VCXO U19 CDCM7005JP6 CDCM7005 clock input select Clock provided from VCXO U19 Input clock provided from J20 1-2JP1 ADS5545 output enable Output enabled Output disabled 1-2SJP3 ADS5545 output clock direction Sends output clock to DDC Sends output clock to FPGA 1-2
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3.3 Apply Power to Board
4 Software Installation
Software Installation www.ti.com
Table 2. Three Pin Jumper List (continued)
Jumper Function Location: Pins 1-2 Location: Pins 2-3 Default
SJP11 ADC input clock select Provides clock from CDCM7005 Provides clock from SMA removedto T5 connector J13JP4 ADC clock buffer enable Disables ADC clock buffer U14 Enables ADC clock buffer U14 2-3J17 Selects cable side operation voltage of Sets VCAB to +3.3V Sets VCAB to +5V 2-3U6 for parallel port J2JP12 Selects signal path for DAC5688 CDCM7005 output Y1A to DAC Connects DAC CLK1CB to LED 1-2CLK1B Connects CLK1CB D9.JP13 Selects signal path for DAC5688 CLK1 Connects CDCM7005 output Connects DAC CLK1C to 1-2Y1B to DAC CLK1C FPGA.SJP9 DDC input clock select ADC output clock to DDC FPGA output clock to DDC 1-2SJP8 DUC input clock select FPGA output clock to DUC CDCM7705 output clock to 1-2DUCSJP1 Selects +5V source for USB controller +5V sourced from board. +5V sourced from USB cable. 1-2U24SJP2 Selects +5V source for USB controller +5V sourced from board. +5V sourced from USB cable. 1-2U21
Table 3. Jumper J15 List
Jumper Function Location = +3.3V Location = GND Default
PLL_VDD Sets logic value of SYNC pin of DAC5688 Sets SYNC to GND Sets SYNC to +3.3V 1-2Sleep N/A N/A N/A Not UsedEXT_LO Sets logic value of EXTLO pin of DAC5688 Sets EXTLO to GND Sets EXTLO to +3.3V 7-8TXENABLE Sets logic value of TXENABLE pin of Sets TXENABLE to GND Sets TXENABLE to +3.3V 11-12DAC5688CDC_PD Sets logic value of Power Down pin of Sets PD to GND Sets PD to +3.3V 14-15CDCM7005
The TSW4100 contains an Altera EP2C8 Cyclone II™ FPGA (U10) and an Altera EPCS4™reprogrammable serial configuration PROM. The EPCS4 is pre-programmed to a default configuration. Toprepare the board for operation:1. Plug in the provided power supply to connector J3 and the other end to +110 VAC.2. Press the DAC RESET switch SW5 on the TSW4100 board.3. Ensure the FPGA is configured by verifying the D2 LED is on.4. Verify the CDCM7005 VCXO and reference clock are present (D4 and D5 LEDs are on).
This section describes the software installation procedures needed to operate the TSW4100:•Section 4.1 Installing the TSW4100 interface to the GC5016 CDC and DAC Software•Section 4.2 Installing the USB Driver Software•Section 4.3 Installing the MATLAB Runtime Engine•Section 4.4 Installing the TSW4100GUI Software
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4.1 Installing the TSW4100 Interface to GC5016 CDC and DAC Software
4.2 Installing the USB Driver Software
www.ti.com Software Installation
The TSW4100 uses a modified version of the existing DAC5688 EVM LabView software program forwriting and reading to the DAC5688 and CDCM7005. This software is separate from the TSW4100software used to design and load GC5016 filter configurations.
Note: Once all software is loaded, TI recommends the host computer be restarted. This softwarehas been verified to be functional for the Windows 2000 and Windows XP operatingsystems.
1. Copy the folder TSW4100_DAC_CDC_Installer found on the TSW4100 Installation CD-ROM to atemporary directory on the host PC.2. Double-click the setup.exe filename found under this directory.3. Follow the standard Windows Installation procedure that includes accepting the License Agreementand using the default installation directory.
CAUTION
Do not start the software after completing the installation.
The USB interface adapter provides an additional, dedicated PC IP address to connect to the TSW4100IP address. To install this adapter:1. Plug in one of the USB cables between J25 of the TSW4100 board and a PC. The software shouldrecognize the connection and ask for drivers.2. After the Welcome to the Found New Hardware Wizard message displays, select the No, not at thisTime option.3. Select the Install from a list or specific location (advanced) option.4. If asked, click on the Don't' search. I will choose the driver to install option.5. If a window opens with the following driver name Texas Instruments TSW4100 DAC and CDCController, select this then click next. If this does not appear, navigate to the C:\ProgramFiles\TSW4100_DAC_CDC\TSW4100 Drivers directory.6. Click Open.7. The software loads the drivers in this directory. When prompted, select the Continue anyways option.8. Complete the USB driver installation. If the driver cannot be found, click on the option Don't search. Iwill choose the driver to install. Click Next.9. A new widow should open with a couple of options to choose from. Select TSW4100 DAC and CDCController. Click Next.10. Repeat steps 6 and 7. This completes the TSW4100 DAC and CDC driver installation.11. Copy the folder TSW4100_GC5016 Drivers found on the TSW4100 Installation CD-ROM to atemporary directory on the host PC.12. Plug in the other USB cable between J26 of the TSW4100 board and a PC. The software shouldrecognize the connection and ask for drivers.13. After the Welcome to the Found New Hardware Wizard message displays, select the No, not at thisTime option.14. Select the Install from a list or specific location (advanced) option.15. Navigate to the TSW4100_GC5016 Drivers directory.16. Click Open.17. The software loads the drivers in this directory. When prompted, select the Continue anyways option.18. Complete the USB driver installation.
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4.3 Installing the MATLAB Runtime Engine
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This section helps you install the MATLAB Runtime engine which is used to run the provide MATLABexecutable code.1. Double-click on the MCRInstaller.exe file located on the TSW4100 installation CD. The Choose SetupLanguage (Figure 2 ) displays. Click OK for English (United States).
Figure 2. Choose Setup Language
2. When the MATLAB Component Runtime 7.5 screen (Figure 3 ) displays, click Next.
Figure 3. MATLAB Welcome Screen
3. For the Customer Information (Figure 4 ) screen, specify the User Name,Organization, select thedesired user option button, and click Next.
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Figure 4. Customer Information
4. When the Destination Folder screen (Figure 5 ) displays, click Next to install the MATLAB software inthe default directory.
Figure 5. Destination Folder
5. When the Ready to Install the Program screen (Figure 6 ) displays, click Install to begin the installation.The installation lasts approximately five minutes.
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Software Installation www.ti.com
Figure 6. Ready to Install the Program
6. Click Finish once the InstallShield Wizard Completed screen (Figure 7 ) displays.
Figure 7. InstallShield Wizard Completed
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4.4 Installing the TSW4100GUI Software
4
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1. Double-click the TSW4100GUIIinstaller.exe filename found in the top-level folder of the TSW4100Installation CD-ROM. The TSW4100 Installation Wizard (Figure 8 ) displays. Click Next.
Figure 8. TSW4100 Installation Welcome
2. When the License Agreement (Figure 9 ) displays, select the I accept the terms in the Licenseagreement option and click Next to accept the TSW4100 Software License Agreement.
Figure 9. TSW4100 License Agreement
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Software Installation www.ti.com
3. On the Customer Information (Figure 10 ) screen, provide User Name,Organization information, andselect the appropriate Install this Application for option. Click Next.
Figure 10. Customer Information
4. On the Setup Type (Figure 11 ) display, select the Complete Setup Type option and click Next.
Figure 11. Setup Type
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www.ti.com Software Installation
5. On the Ready to Install the Program (Figure 12 ) display, click Install. The installation takes betweenone and three minutes to complete.
Figure 12. Ready to Install the Program
6. Click Finish once the InstallShield Wizard Completed screen (Figure 13 ) displays.
Figure 13. InstallShield Wizard Completed
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5 Running the TSW4100 CDC and DAC Interface
5.1 Starting the TSW4100 Interface
Running the TSW4100 CDC and DAC Interface www.ti.com
The TSW4100 software is now ready to use. To start the application program, click the Windows menusequence start →All Programs →Texas Instruments TSW4100 DAC and CDC Control →TSW4100DAC and CDC Control (Figure 14 ).
Note: Click OK if a warning message about Internet connections is received. This provides a linkfor the current TSW4100 data sheets on the TI Internet Site. Unplug and plug the USBconnector if necessary. The user may need to click the USB Reset button (on the left side ofthe GUI) to reinitialize the USB connection.
Figure 14. TSW4100 CDC/DAC Graphical User Interface
If the error message DAC5688 EVM not detected is displayed, indicating that the host is unable tocommunicate with the DAC5688, perform these actions:1. Press the DAC RESET switch SW5 on the TSW4100 board.2. Click the Read All button on the DAC5688 Registers window.3. Click Reset USB button on the left side of the TSW4100 DAC CDC GUI.4. If this does not fix the problem, reboot the host computer. If the problem still exists, uninstall thesoftware and any other TI software such as the DAC5688 or TSW3003 if it exists on the computer.Re-install the TSW4100 DAC CDC software.
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5.2 Loading the CDCM7005 with Default Values
www.ti.com Running the TSW4100 CDC and DAC Interface
Figure 15. CDCM7005 Interface
By using the provided CDCM7005 serial peripheral interface (SPI) software, the user can load settings tothe CDCM7005 internal registers. This must be performed every time power is applied to the TSW4100EVM. The CDCM7005 device has default settings that are loaded at powerup and are different than thesettings needed to operate the TSW4100.
To load the CDCM7005 with the TSW4100 default values:1. Open the TSW4100 DAC CDC GUI. Upon opening, the GUI will automatically send the TSW4100default values to the CDCM7005. LED D6 should now be illuminated indicating the CDCM7005 islocked to the internal 10MHz reference.2. Click on Reset USB Port. After this, If no changes are going to be made to the CDCM7005, the usercan skip steps 2-10 and go the Loading the DAC5688 section.3. To make changes to the CDCM7005, click the CDCM7005 Registers option in the top, left-handcorner. The CDCM7005 interface (Figure 15 ) displays.4. The PLL tab goes to another window which allows the user to change the VCXO, reference, andoutput frequency. The current default values are set to match the VCXO and reference oscillator thatare installed on the TSW4100.5. The Output tab allows the user to set the divide ratio, output drive standard, and output mode for all ofthe outputs. The current default values are what is required for the TSW4100 to operate with.6. The Advanced tab allows the user to change several parameters used by the internal PLL of theCDCM7005 along with other parameters. Consult the CDCM7005 data sheet for more information onthese controls.7. After making any changes to any of these settings, click the SEND All button to load the CDCM7005registers with the new values.8. The default values are also stored in a file provided by TI. To load the stored settings, click the LoadSettings button on the lower left side of the GUI.
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5.3 Loading the DAC5688
Running the TSW4100 CDC and DAC Interface www.ti.com
9. Navigate to the directory ( C:\Program Files\TexasInstruments\TSW4100GUI\CDCandDACregisters\) for the default register settings and select the fileTSW4100_DAC_CDC_example_1.txt. This file is also located on the provided CD as well.10. Click OK to load the CDCM7005 registers with default values.11. To save a custom configuration, click on the Save Settings button and provide a file name. This file willthen save all of the current settings for both the DAC5688 and CDCM7005.
The TSW4100 uses differential and single-ended clocks from the CDCM7005:•Y0A and Y0B to drive the DAC5688 CLK2 inputs.•Y1A and Y1B to drive the DAC5688 CLK1 inputs.•Y2A provides an option to drive the DUC. This is currently not used and the output is 3-stated.•Y2B to drive the single-ended FPGA input clock.•Y3A and Y3B to drive the FPGA differential input clock.•Y4A provides an option to drive the ADS5545 along with Y4B and bypass the transformer. This iscurrently not used and the output is 3-stated.•Y4B to drive the crystal filter and transformer which generate the ADS5545 differential input clock.
This default configuration generates a:•320 MHz clock for CLK2 inputs of the DAC5688.•160 MHz clock for CLK1 inputs of the DAC5688.•Two 160 MHz clocks for the FPGA.•160 MHz clock input for the ADS5545.
The default values for the DAC5688 and CDCM7005 are stored in a file provided by TI. To load the storedsettings, click the Load Settings button on the lower left side of the GUI.
Navigate to the directory ( C:\Program Files\Texas Instruments\TSW4100GUI\CDCandDACregisters\)
and select the file TSW4100_DAC_CDC_example_1.txt. The GUI loads both the DAC5688 andCDCM7005 with the settings contained in this file every time the Load Settings function is used. After theDAC5688 is configured, the user must make sure the internal PLL is locked. To verify this, click on theDAC5688 Registers button in the top, left-hand corner of the GUI. Click on the PLL tab. The GUI shall nowlook as shown in Figure 16 . If the PLL Lock indicator is Green, the DAC5688 has been loaded properlyand is ready for operation. If the indicator is Red, indicating the PLL is not locked, press the DAC5688reset switch SW5, then click on the Auto-Sync button on the top right side of the GUI. If PLL Lockindicator still does not turn Green, press the DAC Reset button SW5 on the TSW4100 and reload theDAC and CDC settings. The PLL Lock Indicator must be Green for the DAC5688 to be working properly
To make changes to the DAC5688, do the following:1. Click the DAC5688 Registers button in the top, left-hand corner of the GUI.2. The GUI should now be displaying the Input tab settings, as shown in Figure 17 . In this window, theuser can change the Input Formats, MUX options, Output path, and Fixed Data settings.3. Click on the Digital tab. The GUI display shall now look as shown in Figure 18 . In this window, the usercan change the DAC interpolation rate, FIFO settings, Mixer settings, Quadrature ModulationCorrection settings, and Offset adjustments.4. Click on the Clock tab. The GUI display shall now look as shown in Figure 19 . In this window, the usercan change the Clock Settings and Clock Adjustments.5. Click on the PLL tab. The GUI display shall now look as shown in Figure 16 . In this window, the usercan change the PLL mode, view the PLL status, change the PLL Ratios and PLL Gain settings. Afterthe DAC5688 and CDCM7005 have been configured, make sure that the PLL Lock indicator on theGUI turns from Red to Green. If this does not work, click on the Auto-Sync button on the top right sideof the GUI. If PLL Lock indicator still does not turn Green, press the DAC Reset button SW5 on theTSW4100 and reload the DAC and CDC settings. The PLL Lock Indicator must be Green for theDAC5688 to be working properly.
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www.ti.com Running the TSW4100 CDC and DAC Interface
6. Click on the Output tab. The GUI display shall now look as shown in Figure 20 . In this window, theuser can change the DAC gains, turn on or off the two DAC channels, and modify the DAC outputdelays and enable or disable the LPF option for each DAC.7. Click on the Sync tab. The GUI display shall now look as shown in Figure 21 . In this window, the usercan change the SIF control, the FIFO sync source, the Clock Divider, the QMC, and the NCO.8. The Advanced tab is for factory test only. This window should not be used.9. More information regarding the operation of theses registers can be found in the DAC5688 Data Sheet.10. After completion of all changes, click the Send All button on the top right side of the GUI. The registervalues will now be loaded into the DAC5688.11. Click on the Read All button, located on the top right side of the GUI, to view the current registersettings of the DAC5688. If an error message is not received, the program is working properly.
Figure 16. DAC5688 Interface
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Running the TSW4100 CDC and DAC Interface www.ti.com
Figure 17. DAC5688 Options
Figure 18. DAC5688 Filters
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www.ti.com Running the TSW4100 CDC and DAC Interface
Figure 19. Clock Settings
Figure 20. DAC Gain
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6 TSW4100 Graphical User Interface (GUI) Software
6.1 Starting the TSW4100GUI
TSW4100 Graphical User Interface (GUI) Software www.ti.com
Figure 21. SIF Control
Using the provided software, the user can download control register and coefficient information data to theGC5016 and read back status register information.
Note: The TSW4100 ships with firmware installed to operate this interface with a PC. This interfacemust be added to any new firmware that is installed or generate an alternative method ofwriting and reading to the GC5016.
The next two sections describe how to start the TSW4100GUI user interface (Section 6.1 ) and thegraphical user interface controls (Section 6.2 ).
Note: To interface with the TSW4100, the CDCM7005 must be operating and locked.
To start the TSW4100GUI interface:1. Click the Windows menu sequence start →All Programs →Texas Instruments →TSW4100GUI →TSW4100GUI_vXpXX.exe, (Figure 14 ) where vXpxx represents the version of software. Theapplication first displays a DOS Test Window. The text Extracting CTF … … CTF archive extractioncomplete. only displays the first time the TSW4100GUI application runs.
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