Texas Instruments TVP9900EVM User manual

TVP9900EVM
User's Guide
Literature Number: SLEU081AMarch 2007 – Revised July 2007
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Contents
1 Functional Description ................................................................................................. 61.1 Description Overview ............................................................................................ 62 Board-Level Description .............................................................................................. 72.1 Test Points and Jumpers ........................................................................................ 72.2 Common Board Interface ....................................................................................... 82.3 Input Description ................................................................................................. 82.4 Output Description ............................................................................................... 93 System-Level Description ............................................................................................ 94 Required Hardware and Equipment ............................................................................... 95 Hardware Setup ......................................................................................................... 106 Software Installation .................................................................................................. 107 WinVCC Quick Start ................................................................................................... 118 WinVCC in Depth ....................................................................................................... 158.1 Starting WinVCC ................................................................................................ 158.2 WinVCC Configuration Dialog Box ........................................................................... 158.3 I
2
C System Test ................................................................................................ 168.4 Main Menu ....................................................................................................... 179 TV Tuner Control ....................................................................................................... 2610 Troubleshooting ........................................................................................................ 2810.1 Troubleshooting Guide ......................................................................................... 2810.2 Corrective Action Dialogs ...................................................................................... 2911 TVP9900EVM Schematics ........................................................................................... 31
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List of Figures
1 TVP9900EVM Block Diagram .............................................................................................. 72 TVP9900EVM System-Level Block Diagram ............................................................................. 93 WinVCC – I
2
C Configuration Screen .................................................................................... 114 WinVCC – Main Screen ................................................................................................... 115 WinVCC – System Initialization .......................................................................................... 126 ATSC Tuner Type .......................................................................................................... 127 TV Tuner Control for ATSC ............................................................................................... 138 TVP9900 Property Sheets ................................................................................................ 149 WinVCC Multiple Occurrences Error Message ......................................................................... 1510 WinVCC I
2
C Address Configuration ..................................................................................... 1611 I
2
C System Failure ......................................................................................................... 1712 WinVCC – Main Screen ................................................................................................... 1713 System Initialization ........................................................................................................ 1914 Register Map Editor ........................................................................................................ 2115 Generic I
2
C Register Editor ............................................................................................... 2216 Property Sheets ............................................................................................................ 2317 Eye Diagram / Constellation Plots ....................................................................................... 2318 Four Channel Scope ....................................................................................................... 2419 ATSC Tuner Type .......................................................................................................... 2620 TV Tuner Control for ATSC ............................................................................................... 2721 I
2
C System Failure Dialog Box ........................................................................................... 2922 Corrective Action Dialog Box ............................................................................................. 2923 Corrective Action Required ............................................................................................... 2924 Corrective Action Required ............................................................................................... 3025 I
2
C Error ..................................................................................................................... 30
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List of Tables
1 I
2
C Address Selection Jumper (I2CA0, JP2) ............................................................................. 72 Power-Down Mode Selection Jumper (PWRDOWN, JP3) ............................................................. 73 Clock Input Selection Jumper (CLKIN_SEL, JP1) ....................................................................... 84 Tuner I
2
C Master Selection Jumper (TUNSCL, JP4 and TUNSDA, JP5) ............................................ 85 Mode B Selection Jumper (Mode B, JP6) ................................................................................ 86 Main Menu Summary ...................................................................................................... 187 Register Map Editor Controls ............................................................................................. 218 Use of Property Sheet Controls .......................................................................................... 259 Property Sheet Button Controls .......................................................................................... 2510 TVP9900EVM Troubleshooting........................................................................................... 28
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1 Functional Description
1.1 Description Overview
User's GuideSLEU081A – March 2007 – Revised July 2007
TVP9900EVM User’s Guide
The TVP9900EVM evaluation module is a printed circuit board (PCB) designed for evaluation of theTVP9900 VSB/QAM receiver. The board is designed with a 36-pin connector that allows connection tomultiple radio-frequency (RF) tuner boards; the EVM is shipped with a standard tuner module. The boardis designed to provide ease of use, while allowing full evaluation of the TVP9900 VSB/QAM receiver.
The TVP9900EVM provides the user one RF input through a standard RF connector. The EVM provides,as an output, a digital parallel or serial MPEG-2 transport stream that is compliant to DVB-SPI. This outputstream can be easily connected to a BER tester or to an MPEG-2 decoder, such as the TVP9000.
The differential intermediate frequency (IF) output signals from the tuner board are input to the TVP9900,which supports processing of ATSC 8-VSB or ITU-T Annex B QAM IF inputs with forward error correction(FEC). It provides peripheral support including automatic gain control (AGC) control, direct tuner control,and antenna control. In general, the receiver demodulates the input IF signal into a digital MPEG-2transport stream, with advanced integrated features for AGC control, filtering, tracking, and errorcorrection. An AGC control interface can be used to control the IF AGC amplifier gain in the tuner. Theoutputs supported by the EVM include parallel/serial MPEG-2 outputs with error packet indicator.
A 25-MHz clock is required to drive the PLL of the TVP9900. Some tuner devices have a 4-MHz clockoutput that can be used as the demodulator clock source. The TVP9900EVM has the option of using a4-MHz clock input from the tuner as the clock source, or the default setting of using the onboard 25-MHzcrystal. This selection is controlled by Jumper 1 together with R24, R25, and R26. See Section 2.1 formore details.
The TVP9900 includes the option of attaching a 12-V power supply and using the modular jack interfaceto provide CEA-909 compliant smart antenna control. The TVP9900 receives the antenna parametersfrom the host processor via I
2
C and sends the modulated PWM signal to the antenna. The antennaparameters include antenna direction, antenna polarization, preamplifier gain, and channel number.
The TVP9900EVM uses the PC parallel port to emulate the I
2
C bus, which provides communication withthe TVP9900 receiver and the RF tuner. WinVCC (Windows® Video Control Center), a Windowscompatible application, communicates with the devices via the I
2
C and is provided on the EVM CD-ROM.This application software provides the user interface to experiment with the programmable features and toperform register-level and high-level control of the TVP9900 receiver and the RF tuner. The TVP9900EVMprovides the option of whether the TVP9900 or the PC is the tuner I
2
C master. This is controlled withjumpers 4 and 5, and the configuration is automatically detected by the WinVCC software. SeeSection 2.1 for more details.
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2 Board-Level Description
Sync LED Lock LED +5V
LED
5V In
MPEG-2 Parallel Port
Data
Test Points
GPIO
Testpoints
TVP9900
CLKIN
JP1 I2CAO JP2 Pwrdown
JP3 TUNSCL
JP4
TUNSDA
JP5 J2
J3
I C Parallel Port
2
Mode B
JP6
12V In SmAnt
Jack
RF
Tuner
Tuner AS
5VDC
LED
36-pin male board connector
12 1 2
Reset
36-pin female board connector
2.1 Test Points and Jumpers
Board-Level Description
The TVP9900EVM consists of the TVP9900EVM module and the tuner EVM module. A two-row 36-pinconnector connects the boards. The block diagram of the EVM set is shown in Figure 1 .
Figure 1. TVP9900EVM Block Diagram
The TVP9900EVM was designed with test points and jumpers to help in evaluation and troubleshooting.Each jumper is set by default to its preferred state for the TVP9900EVM. There are test points for I
2
C SCLand SDA, GND, 5 V, 3.3 V, and 1.5 V. The digital MPEG-2 transport stream data and GPIO signals arebrought out to two dual-row headers that allow easy connect to test equipment.
The I
2
C address selection is made with one shunt jumper, which is only read after a reset or at power up.The default address is 0xB8.
Note: If the I
2
C address is changed on either the TVP9900 board or the tuner board while theTVP9900EVM is powered up, that device does not recognize the new I
2
C address. Thereset button on the TVP9900EVM must be pressed, and WinVCC must be exited,restarted, and configured for the new I
2
C address.
Table 1. I
2
C Address Selection Jumper (I2CA0, JP2)
JP2 I
2
C Address
ON 0xB8OFF 0xBA
Table 2. Power-Down Mode Selection Jumper(PWRDOWN, JP3)
JP3 Mode
ON Normal operationOFF Power-down mode
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2.2 Common Board Interface
2.3 Input Description
Board-Level Description
JP1, together with R24, R25, and R26, control whether a 4-MHz clock from the tuner or a 25-MHz clockfrom the onboard crystal are used to drive the TVP9900. The jumper settings and resistor populate (POP)or do-not-populate (DNP) options are listed in Table 3 . The default setting is for the 25-MHz clock.
Table 3. Clock Input Selection Jumper (CLKIN_SEL, JP1)
JP1 R24 R25 R26 Clock
ON POP POP DNP 25 MHzOFF DNP DNP POP 4 MHz
The TVP9900EVM provides the option of whether the TVP9900 or the PC is the tuner I
2
C master, and thisis selected with JP4 (SCL) and JP5 (SDA). The default setting is for the TVP9900 to be the I
2
C master.
Table 4. Tuner I
2
C Master Selection Jumper(TUNSCL, JP4 and TUNSDA, JP5)
JP4 JP5 I
2
C Master
1-2 1-2 PC2-3 2-3 TVP9900
The TVP9900 has a CEA-909 compliant smart antenna control interface and the TVP9900EVM has theoption of supporting either a Mode A (basic one-direction control) or Mode B (advanced bidirectionalcontrol) antenna using the 1-pin mode of the smart antenna control interface pin on the TVP9900 (pin 29).JP6 is used to enable or disable Mode B for smart antenna support. The default setting is for Mode A.
Table 5. Mode B Selection Jumper (Mode B, JP6)
JP6 Mode
1-2 Mode A2-3 Mode B
The TVP9900EVM uses a two-row 36-pin connector (H1) to share common signals and the 5-V powersupply between the boards. This connection allows multiple tuner boards to be connected to theTVP9900EVM. The EVM package is shipped with a standard tuner module. This connector shares thedifferential IF signals, AGC, 5 V, ground, I
2
C bus (SCL and SDA), and, if desired, a 4-MHz clock, twogeneral-purpose input/output (GPIO) signals, and reset.
The differential IF output signals from the tuner board are input to the TVP9900, which supportsprocessing of ATSC 8-VSB or ITU-T Annex B QAM IF inputs with forward error correction (FEC).
The TVP9900EVM receiver has an analog input channel that accepts one differential or single-ended44-MHz center frequency IF input that is ac coupled. The receiver supports a maximum differential inputvoltage range of 1 V peak-to-peak. The programmable gain amplifier (PGA) and the AGC circuit worktogether and make sure that the input signal is amplified sufficiently to ensure the proper input range forthe ADC. An external downconverter is not required to use the IF direct sampling method. The analogfront end and adjacent digital filter relax the requirement for external analog filters, and only one externalSAW filter is required.
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2.4 Output Description
3 System-Level Description
Computer Power
Supply
TVP9900
Module
RF
Tuner
Module
RF
DTV
Source
MPEG-2
Transport Stream MPEG-2
Decoder or
BERTester
TVP9900EVM
IF
4 Required Hardware and Equipment
System-Level Description
The EVM provides, as an output, a digital parallel or serial MPEG-2 transport stream that is compliant toDVB-SPI. The 8-bit MPEG-2 transport stream data output of the TVP9900, together with the clock andpacket signals (see following list), are routed to a 20-pin header (H3) and then to an LVDS line driver,which is connected to a standard DB25F edge connector. This output stream can be easily connected to abit error rate (BER) tester or to a MPEG-2 decoder. In serial mode, the DATAOUT7_SO pin is used as theserial data output (available on pin 17 of header 3), with the most-significant bit (MSB) output first. Themaximum output rate is 42.1 Mbit/s in serial mode.
MPEG-2 clock and packet signals:•DCLK – Data clock output•PACK_SYNC – Byte start signal (indicates the first byte of a transport stream data packet)•BYTE_VALID – Interface packet framing signal (indicates length of the valid data packet)•D_ERROR – Interface data error (indicates an error in the data output packet)
A system-level block diagram incorporating the TVP9900 is shown in Figure 2 . The primary features ofthis configuration are:•Power is provided by a single 5-V power supply provided with the EVM and is shared between bothmodules via the 36-pin connector.•Supports one RF input through a standard RF connector•Provides 8-bit MPEG-2 parallel or serial transport stream data output•I
2
C bus initializes the video devices via a PC parallel port.•TVP9900 VSB/QAM receiver performance parameters may be measured with a BER tester.
Figure 2. TVP9900EVM System-Level Block Diagram
The required hardware and equipment necessary to use the TVP9900EVM are:•TVP9900EVM (provided)•Universal 5-V power supply (provided)•Parallel cable (provided)•Windows-based PC with CD-ROM drive and Win95™ or later•RF cable for input•Parallel cable for output•RF video source (terrestrial antenna, DTV cable, 8VSB/QAM test transmitter, etc.)•MPEG-2 decoder or BER tester
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5 Hardware Setup
6 Software Installation
Hardware Setup
Figure 1 shows the TVP9900EVM layout and indicates the location of the power supply and theappropriate connectors. All connectors are labeled according to their function. To prepare the EVM forevaluation, connect the following:1. There are two parallel interfaces on the EVM. The one labeled J3 is for the I
2
C interface to the PC.Connect a parallel port cable from this connector on the EVM to the PC.2. The other connector, labeled J2, provides a digital MPEG-2 transport stream that is compliant toDVB-SPI. Connect this to a BER tester or to an MPEG-2 decoder.3. Connect an RF video source to the TVP9900EVM tuner board RF input.4. Connect the 5-V power supply to the dc jack on the TVP9900 board. A green LED on the board shouldnow be lit.
The I
2
C slave address can be selected with jumper JP2. There are two possible addresses: 0xB8 and0xBA. The default setting for this jumper is for the shunt to be in place, which selects 0xB8. This isconnected to TVP9900 pin 38, which is read at power up. If the shunt is removed and the EVM reset, theTVP9900 now responds to I
2
C slave address 0xBA. The tuner I
2
C address is set by default on the tunerEVM board to 0xC2 (tuner board jumper JP1 is open). This jumper setting is required to match the I
2
Cslave address in the Tuner Type window in the WinVCC software.
Note: If the I
2
C address is changed on the TVP9900 or tuner board while the TVP9900EVM ispowered up, the device does not recognize the new I
2
C address. The reset button on theTVP9900EVM must be pressed, and WinVCC must be exited, restarted, and configuredfor the new I
2
C address.
WinVCC is a Windows application that uses the PC parallel port to emulate I
2
C, providing access to eachdevice on the I
2
C bus. WinVCC makes use of CMD files, which are text editable files that allows presetreceiver setups to be programmed easily.
This feature allows the user to easily set multiple I
2
C registers with the press of a button. WinVCC alsohas property sheets for the TVP9900, which allow the user to control the I
2
C registers with a GUI. A tunercontrol page is provided to setup and control the included RF tuner.
All necessary software for the TVP9900EVM is provided on the enclosed CD. Perform the following stepsto install WinVCC:1. Explore the provided TVP9900EVM software CD.2. Install Port95NT.exe. This is the parallel port driver used by WinVCC. This driver must be installed andthe PC must be rebooted before WinVCC can operate correctly. This does not affect normal parallelport operation.
3. Install Setup.exe. Click Next at all prompts and click Finish to complete the installation process. Thisinstalls WinVCC onto the PC. No reboot is required.4. Run WinVCC.exe.
Note: A shortcut to WinVCC and additional TVP9900 related documentation can be found atStart →All Programs →TVP9900EVM Software.
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7 WinVCC Quick Start
WinVCC Quick Start
Perform the following steps to get an MPEG-2 transport stream out of the TVP9900EVM.1. Once WinVCC is executed, the WinVCC Configuration screen appears, as shown in Figure 3 . Thisdialog box configures the I
2
C bus. Next to TVP9900, select the TVP9900 and ensure the I
2
C addressis set to 0xB8 (default setting on EVM.) This must match the I
2
C ADDR jumper on the TVP9900 board.2. The tuner I
2
C address is set by default in WinVCC to 0xC2. This is also the default setting on the tunerEVM board; verify the correct TUNER_AS jumper setting on the tuner board.
Note: If WinVCC is running and the TVP9900 or tuner board I
2
C address is changed, powermust be cycled on the EVM.
Figure 3. WinVCC – I
2
C Configuration Screen
3. Ensure that all other boxes are set to NOT USED and that all program options buttons are set toENABLE. Click OK.4. If there are no I
2
C communication issues, the WinVCC Main Screen dialog window displays next, asshown in Figure 4 . If there are I
2
C issues, an I
2
C Test Report box displays. Completely exit out ofWinVCC, double check the parallel port cable connections, cycle power on the TVP9900EVM, and runWinVCC again.
Figure 4. WinVCC – Main Screen
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WinVCC Quick Start
5. Load the provided initialization command (CMD) file into WinVCC by clicking on Tools →SystemInitialization and clicking Browse. The default directory is C:\Program Files\TexasInstruments\WinVCC\TVP9900\Initialization.
6. In the System Initialization Window, shown in Figure 5 , click the "Program TVP9900 - 8-VSB mode -outputs enabled" dataset in the window and then click PROGRAM Device(s) Using Selected Dataset toinitialize the TVP9900EVM for 8-VSB mode. The 64QAM mode and 256QAM mode can be set up byusing the other datasets in this command file.
Figure 5. WinVCC – System Initialization
7. Click Close.8. Program the tuner by clicking Tools →TV Tuner Control →ATSC. The Tuner Type window, as shown inFigure 6, allows the user to select tuner and source settings. Select the Standard Digital ATSC Tunerbutton and click on OK to use the default tuner shipped with the TVP9900EVM.
Figure 6. ATSC Tuner Type
9. In the TV Tuner Control window, as shown in Figure 7 , select a channel from the "Add to Channel List"
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WinVCC Quick Start
drop down box.10. Click Add. After approximately one second, the tuner is programmed to the selected channel.11. For direct entry of the RF center frequency, type in the center frequency (for example, 189) into the"RF Center Freq (MHz)" box. Click Program to program the tuner.
Figure 7. TV Tuner Control for ATSC
12. To perform a channel scan when the input is from an antenna (or cable), click Start on the TV TunerControl page. This selects all channels for which the TVP9900 indicates locked status. The lockingcriteria are selectable on this page: Field Sync Lock (Default: ON), Timing Recovery (Default: ON), andFEC Sync Lock (Default: ON). The Pre-Delay is not needed.13. After scanning, switching between channels can be easily done using the channel up/down buttons(Ch Up and Ch Down) or the "Channel Changer" drop-down list.14. Click OK to close the TV Tuner Control tool.
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WinVCC Quick Start
15. Open the TVP9900 Property Sheets by clicking Edit →Property Sheets →TVP9900. Click on the Statustab, as shown in Figure 8 . Click Auto-Update to enable it, and then click Soft Reset. The demodulatorand FEC status are shown on this page.
Figure 8. TVP9900 Property Sheets
16. With an RF source provided to the tuner RF connector, and the EVM output connected to a BERtester or MPEG-2 decoder, the MPEG-2 transport stream should be available. If the transport stream isnot output from the TVP9900EVM, ensure the following is correct:•The input/output cables are connected correctly to the sources, EVM, and tester/decoder.•The input source is working properly and providing the expected RF input. Lock can be confirmedwith the above property sheet.•The correct dataset is selected and programmed for the correct RF input format.
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8 WinVCC in Depth
8.1 Starting WinVCC
8.2 WinVCC Configuration Dialog Box
WinVCC in Depth
The following sections describe how to use WinVCC in depth. It discusses various features and screensthat the user may encounter while evaluating the TVP9900EVM.
The Port95NT parallel port driver must be installed before using WinVCC. WinVCC may be started byclicking on Start →All Programs →TVP9900EVM Software →WinVCC.
If the dialog box shown in Figure 9 is displayed, then it means one of two things:•WinVCC terminated abnormally the last time it ran. In this case, click OK to exit the program andrestart WinVCC.•There is more than one instance of WinVCC running at the same time. In this case, click OK to exit theprogram. Then, press Ctrl+Alt+Delete to open the Task Manager. Select and click End Task on alloccurrences of WinVCC or WinVCC CONFIGURATION. Restart WinVCC.
Figure 9. WinVCC Multiple Occurrences Error Message
The WinVCC Configuration dialog box, as seen in Figure 10 , should now be visible. This dialog boxconfigures the I
2
C bus on the TVP9900EVM. All settings from this dialog box are stored in the Windowsregistry and are restored the next time the program is started. After initial installation, the TVP9900(QAM/VSB Receiver) device family is set to TVP9900, and all other devices are set to NOT USED.
The I
2
C slave address for each device must match the I
2
C slave address selected by jumpers on theTVP9900EVM. These jumpers are set by the factory to use 0xB8 for the TVP9900 and 0xC2 for the tuner.
All Program Options must be enabled. Disabling these options is only required if you are debugging aproblem with the I
2
C bus.
Click OK to begin I
2
C communication with the selected devices.
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8.3 I
2
C System Test
WinVCC in Depth
Figure 10. WinVCC I
2
C Address Configuration
The I
2
C system test of the selected devices runs immediately after closing the WinVCC Configurationdialog box by clicking OK (unless the I
2
C system test program options button was disabled).
If the test fails, a dialog box similar to Figure 11 appears. See Section 10 ,Troubleshooting, for details onhow to resolve this issue.
The I
2
C system test can be run at anytime by clicking Run System I
2
C Test in the Tools menu.
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8.4 Main Menu
WinVCC in Depth
Figure 11. I
2
C System Failure
After closing the WinVCC configuration dialog, the main menu is displayed (see Figure 12 ). The menusthat are used to operate WinVCC are File, Edit, Tools, Window, and Help. The File menu’s only function isExit, which terminates the program. Table 6 summarizes the main menu contents.
Figure 12. WinVCC – Main Screen
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8.4.1 System Initialization
WinVCC in Depth
Table 6. Main Menu Summary
Menu Contents
File Exit
Register MapTVP9900Edit Generic I
2
CProperty Sheets
TVP9900
System Initialization
Real-time PollingTV Tuner Control
NTSC CATVPAL CATVTools
ATSC
Multi-byte I
2
C TransfersSet I
2
C Bit RateRun System I
2
C TestRun Continuous I
2
C TestWindow Allows selection of the active window. Multiple windows can be open at the same time.Help Displays program version
Clicking System Initialization in the Tools menu displays the dialog box shown in Figure 13 . This dialogbox provides the means for initializing the TVP9900 receiver for a particular IF input mode. The details ofthe initialization are contained in the command file (with a CMD file extension).
The command file is loaded by clicking Browse. Once the command file is opened, a text list displaysdescriptions of the individual datasets contained within the command file.
Click once on the desired dataset description to select it. Click Program Device(s) Using Selected Datasetto run the selected dataset, which loads the devices via the I
2
C bus. When the device initialization hascompleted, the status indicator displays Ready.
Note: If Ready does not display, the devices are not initialized, and the I
2
C bus is notcommunicating. See Section 10 ,Troubleshooting, for possible solutions.
Click Close to close the dialog box. Each time the System Initialization dialog box is closed, theinitialization file pathname and the dataset selection number are saved in the Windows registry to allowthese settings to be retained for the next time WinVCC runs.
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8.4.1.1 Adding a Custom Dataset
8.4.1.2 Command Files
WinVCC in Depth
Figure 13. System Initialization
After programming the EVM via the System Initialization tool using the factory-supplied command file,customize the device register settings to fit the application needs. Perform the following steps to save thecustom settings:1. Reopen the System Initialization dialog box via the Tools menu.2. Click Append Current Device Settings to Command File. A dialog box requesting a description of thenew dataset appears.3. Optionally, click the drop-down box and select one of the existing descriptions.4. Modify the description text or type your own description.5. Click OK. All non-default register values from the TVP9900 and tuner are appended to the currentcommand file as an additional dataset.
Select the custom dataset and load it by clicking Program Device(s) Using Selected Dataset.
Using the same procedure but clicking Replace Selected Dataset with Current Device Settings overwritesan existing dataset with the current settings.
Note: If editing the command file (.CMD) using a standard editor, the file must be saved as plaintext.
The command file is a text file that can be generated using any common editor; however, it must be savedas plain text. In Windows Explorer, use right-click →Edit to open a command file. (Double clicking on acommand file or using right-click →Open causes the command file to run as a script in a DOS window.)
Command files are especially useful for quickly switching between various system configurations. Adefault command file has been provided on the CD. This command file contains examples of commonsetups. This command file is located at:C:\Program Files\Texas Instruments\WinVCC\TVP9900\Initialization\
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8.4.1.3 Example Command File
WinVCC in Depth
A command file can contain up to 250 datasets. A dataset is a set of register settings to initialize theTVP9900 receiver and/or tuner for a particular IF input mode. Each dataset includes a description that isdisplayed in one row of the dataset descriptions list. The register settings may be located in the commandfile itself and/or may be stored in separate include file(s) (with an .INC file extension) and be included intothe command file using the INCLUDE statement.
An example of one dataset within a command file is shown below.BEGIN_DATASET
DATASET_NAME,"Program TVP9900 - 8-VSB mode - outputs enabled"
WR_REG,TVP9900,1,0X53, 0XFF // Enable outputs and clockWR_REG,TVP9900,1,0X54, 0X03WR_REG,TVP9900,1,0X00, 0X20 // soft reset
END_DATASET
Each command file may contain individual write-to-register (WR_REG) commands.•The comment indicator is the double-slash, //.•The command file is not case sensitive and ignores all white-space characters.•All numbers can be entered as hexadecimal (beginning with 0x) or as decimal.•Every dataset in a command file begins with BEGIN_DATASET and ends with END_DATASET. Themaximum number of datasets is 250.•The dataset text description is entered between double quotes using the DATASET_NAME command.The enclosed text can be up to 128 characters in length. This text appears in the System Initializationdialog box when the command file is opened.•The INCLUDE command inserts the contents of an include file (with an .INC file extension) in-line inplace of the INCLUDE command. Therefore, the include file must not contain the BEGIN_DATASET,END_DATASET, and DATASET_NAME commands.
Note: All included files must be located in the same directory as the command (CMD) file.
•The write-to-register command is written as follows:WR_REG, <DeviceFamily>, <Number of data bytes (N)>, <subaddress>, <Data1>, …, <DataN>orWR_REG, <Literal slave address>, <Number of data bytes (N)>, <subaddress>, <Data1>, …, <DataN>The valid device family mnemonics are:VID_DEC for the video decodersVID_ENC for the video encodersTVP9000 for the TVP900x HDTV video processorsTVP9900 for the TVP9900 VSB/QAM demodulatorTVP7000 for the TVP700x video/graphic ADC devicesTHS8200 for the THS8200 HDTV/SDTV/RGB DAC deviceWinVCC translates the device family mnemonic to the slave address that was selected in the WinVCCConfiguration dialog box upon program startup. This eliminates the need to edit command files if thealternate slave address must be used.If the literal slave address method is used, then the slave address entered is used directly. Thismethod can be used for programming the tuner.•A delay may be inserted between commands using the WAIT command, which is written as follows:WAIT,<# milliseconds>
•If an I
2
C write without a subaddress is required, use two consecutive commas instead of"subaddress,".
TVP9900EVM User’s Guide20 SLEU081A – March 2007 – Revised July 2007Submit Documentation Feedback