Texas Instruments TVP5154EVM manual Symptom Cause

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Troubleshooting

Table 21. TVP5154EVM Troubleshooting (continued)

SYMPTOM

CAUSE

Decoder I2C slave address is wrong.

Encoder I2C slave address is wrong.

Parallel cable is not connected from PC parallel port to the TVP5154 decoder module DB25 connector.

EVM is not powered on.

Wrong type of parallel cable.

No I2C communication

Device was placed in power-down mode.

EVM was configured for an external I2C master.

PC parallel port mode is not set correctly.

Still no I2C communication

SOLUTION

Make sure I2C slave address jumpers on the TVP5154 decoder module are across pins 2 and 3.

Slave address is hard coded to be 0x54 in the command file. Make sure the I2C slave address jumper on encoder module is across pins 2 and 3.

Connect cable

Power supply must be plugged into a

100-V to 240-V/47-Hz to 63-Hz power source, and the cord must be plugged into the power connector on the EVM.

Some parallel cables are not wired straight through pin for pin. Use the cable supplied with the EVM.

Press the Reset button on the TVP5154 Decoder Module.

Reinstall 0-Ωresistors R5 and R6. Control EVM using the PC parallel port.

DO THIS AS A LAST RESORT. Reboot PC, enter BIOS setup program, and set parallel port LPT1 mode (Addr 378h) to ECP mode or bidirectional mode (sometimes called PS/2 mode or byte mode). If already set to one of these two modes, switch to the other setting (see Section 10.2).

PC may not be capable of operating in the required parallel port mode. This is true of some laptop computers. Use a different computer, preferably a desktop PC.

When WinVCC is started and the WinVCC Configuration dialog box is closed with OK, the I2C system test is performed (unless the I2C System Test program options button was disabled).

If the I2C system test fails, a dialog box (see Figure 22) appears. This example reports that a read from TVP5154 failed, using slave address 0xB8, sub-address 0xD0. The data read was 0x78. The expected data was 0x00.

After noting which device had a problem, click OK to continue. Next, the Corrective Action Dialog box appears to fix the problem.

34

TVP5154EVM User's Guide

SLEU069A –February 2006 –Revised July 2006

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Contents Users Guide Submit Documentation Feedback Contents List of Figures List of Tables TVP5154EVM Users Guide Description OverviewPower-Down-Mode Selection Jumper PDN, JP11 Test Points and JumpersVideo Input Description Common Board InterfaceVideo Output Description System-Level Description Software Installation WinVCC I2C Configuration Screen Real-Time Polling Dialog Starting WinVCC WinVCC System InitializationWinVCC Configuration Dialog Box I2C System TestReal-Time Polling I2C System FailureMain Menu Main Menu SummaryDecoder I2C Write and Read Enable System Initialization Adding a Custom Dataset Command Files Example Command FileRegister Editing Register Map EditorEncoder Module Register Map Editor TVP5154 Register Map Editor ControlsGeneric I2C Register Editor Generic I2C Register Map Editor Memory Map EditorTVP5154 Property Sheets Memory Map Editor ControlsAuto-Update From Device TVP5154 Property Sheets Property Sheet RefreshUse of Property Sheet Controls Development and Purpose of DM642 CodeProperty Sheet Button Controls Details of the DM642 Code and Control Registers 1 DM642 Control WindowDM642 Control Window Controls 2 DM642 Virtual I2C Register Map3 DM642 Virtual I2C Register Details Decoder 1 Register Decoder 2 Register Decoder 3 Register Decoder 4 RegisterDecoder 1 Input Format Register Decoder 2 Input Format RegisterLED Control Register Decoder 3 Input Format RegisterDecoder 4 Input Format Register Flash Major Version RegisterTroubleshooting Guide TVP5154EVM TroubleshootingSymptom Cause Corrective Action Dialogs I2C System Failure Dialog BoxCorrective Action Required General I2C Error Report I2C ErrorReset SCL SDA SDA SCL Reset1AIN Reset 1BIN SCL 2AIN SDA 2BIN SDA SCL /RESETAV2 Encsclk Dsptdi Dsptdo Dsptms Dsptclk DSPTRST#SCKS1 AV1 Enchs SCKS3 Encvs AV3 EncfidRPACK4-33 A9 ENCY0 B9 ENCY1 C9 ENCY2 D9 ENCY3Dspclkin EmacenableLendianmode Reset DspeclkinTEA19 TED0 TED1 TED2 TED3 TED4 TED5 TED6 TED7TED15 TEA20Hwdthsel Dspcvdd DSP CvddTEA11 TEA12 TEA13 TCE1# TSDCAS# TSDWE# ResetTEA14 CH4OUT2 CH4OUT0CH4OUT1 CH4OUT3D5V SCL SDA Reset X1/OSC Agnd Avdd REFP1 REFM1 INX /OSC Outx PDN Resetb SCL SDACH1AVDD CH2AVDD CH3AVDD CH4AVDD Avddref CH1PLLVDD CH2PLLVDD CH3PLLVDD CH4PLLVDD1AOUT 2AIN DB9 SN74AHC05DR U2ETED46 TED6 TED38 TED47 TED7 TED39TED14 TED5 TED13 TED37 TED45DSPEMU11 DSPEMU10 DSPEMU9 DSPEMU8 Xdstms Xdstdi Xdstdo Xdstckret XDSEMU0XDSTRST# XDSEMU1 DSPEMU2 XDSEMU1Power on LED +5V ENCC5 ENCC7ENCC6 ENCC4Important Notice
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