Troubleshooting

www.ti.com

9Troubleshooting

This section discusses ways to troubleshoot the TVP5158EVM.

9.1Troubleshooting Guide

If you are experiencing problems with the TVP5158EVM hardware or the VCC software, see Table 13 through Table 16 for available solutions.

Table 13. Troubleshooting Setup and General Issues

Symptom

Cause

Solution

 

 

 

TVP5158EVM Software

Previous version was

Use "Add or Remove Programs" in Windows Control Panel to remove

Installer reports that

installed

previous version of TVP5158EVM Software. Run SETUP.EXE again.

previous version must

 

 

be uninstalled

 

 

 

 

 

On connecting USB

EVM was not

Disconnect USB cable between PC and EVM. Wait 3 seconds. Reconnect the

cable, green "connected

recognized on the USB.

USB cable. Green "connected LED" near USB connector should light.

LED" does not light.

 

 

 

 

 

On connecting USB

Jumper W6 has been

Install jumper W6 near USB connector. Disconnect USB cable between PC

cable, New Hardware

removed.

and EVM. Wait 3 seconds. Reconnect the USB cable. Green "connected

Wizard appears

 

LED" should light.

 

 

 

VCC application has

USB polling rate is too

Conect EVM directly to a laptop/desktop USB port instead going through a

slow response time.

slow.

docking station. Property Pages can not be refreshed using Read All buttons

 

 

at more than about a 1-Hz rate.

 

 

 

Nothing seems to

Clicking Read All button

Property Pages can not be refreshed using Read All buttons at more than

happen when I click

too frequently.

about a 1-Hz rate.

Read All repeatedly.

 

 

 

 

 

Table 14. Troubleshooting with THS8200 and CompositeVideo Output

 

Symptom

Cause

Solution

 

 

 

 

 

USB: Device Not Found

EVM was not

Disconnect USB cable. Wait 3 seconds. Reconnect USB cable. Green

 

error message

recognized on the USB.

"connected LED" should light. Click continue

 

 

 

 

 

USB: I2C Error Code 1

5V power not present

Connect 5V power supply to EVM. Click Continue.

 

error message. An I2C

 

 

 

EVM hardware reset

Normal occurrence. An I2C error will occur if the hardware reset button is

 

acknowledge error has

 

button has been

pressed while real-time polling or property page auto-update is active. Click

 

occurred. See reported

 

pressed.

Continue.

 

I2C slave address and

 

 

 

 

sub-address.

I2C slave address

Check that jumpers W2, W1 and W0 are connected across pins 1-2 (L, L, L)

 

 

jumper setting and

to specify slave address 0xB0 (Set jumper W0 across pins 2-3 (L, L, H) to

 

 

program setting do not

specify slave address 0xB2 for a cascaded 2nd TVP5158EVM.) Exit VCC

 

 

match.

application. Restart VCC and select the correct I2C slave address.

 

 

 

 

 

 

I2C bus master

Check that jumpers W3 and W4 are connected across pins 1-2 to select USB

 

 

jumpered incorrectly.

as I2C master.

 

 

 

 

 

No video output

Wrong video input is

Click on System Initialization in the Tools menu. Browse to

 

 

selected.

TVP5158EVM_YPbPr_Output_Setup.CMD. Click on the dataset named

 

 

 

"Select Ch-X Video Input". (X is the channel to be displayed.) Click the

 

 

 

program button.

 

 

 

 

 

 

TVP5158 is not locked

Click on Property Sheets -> TVP5158 in the Edit menu (see Figure 26). Lock

 

 

to video signal.

status LEDs should both be green. In main window, click buttons

 

 

 

Decoder1,...,Decoder4 to see the lock status of each decoder (see Figure 3).

 

 

 

for numbering of video inputs.

 

 

 

 

 

 

THS8200 is not

Click on Property Sheets -> THS8200 in the Edit menu. Pixel count/line count

 

 

receiving BT.656 data

status should be 858/525 for NTSC or 864/625 for PAL (see Figure 27).

 

 

correctly.

 

 

 

 

 

 

 

THS8200 programmed

Click on Property Sheets -> THS8200 in the Edit menu. Click DTG tab. Frame

 

 

for wrong standard.

Size should be set to 525 if source is NTSC or 625 if source is PAL. If not,

 

 

 

click Real-time polling button in the Tools menu.

 

 

 

 

 

Horizontal instability in

THS8200 Video Triple

On TVP5158 Output Formatter property page, check the Line-Locked Output

 

displayed image

DAC requires a

Clock check box. Set the Port A Channel Selection drop-down box to select

 

 

line-locked clock.

the video input for display. Line-Locked Output Clock is required when using

 

 

 

non-interleaved mode and THS8200.

 

 

 

 

 

No audio

Wrong digital audio

Set jumper W9 across pins 2-3 to hear the record output (SD_R) or across

 

 

output selected.

1-2 to hear the mixer output (SD_M).

 

 

 

 

 

 

 

 

34 TVP5158 Evaluation Module

 

SLEU108 –November 2009

 

 

 

Submit Documentation Feedback

Copyright © 2009, Texas Instruments Incorporated

Page 34
Image 34
Texas Instruments TVP5158 manual Troubleshooting Guide, Troubleshooting Setup and General Issues, Symptom Cause Solution

TVP5158 specifications

The Texas Instruments TVP5158 is a highly versatile and efficient video decoder designed for a range of video processing applications. It serves as an excellent solution for converting analog video signals into digital formats for further processing. The device is commonly utilized in surveillance systems, video conferencing equipment, and various multimedia applications where reliable and high-quality video output is necessary.

One of the primary features of the TVP5158 is its ability to accept multiple video formats, including NTSC, PAL, and SECAM. This flexibility makes it suitable for a global market where different standards are employed. The device can handle up to four composite video inputs, allowing users to connect multiple sources and switch between them as needed seamlessly. The integrated multiplexing capability makes the TVP5158 an excellent choice for applications that require real-time processing of various video sources.

The TVP5158 also incorporates advanced noise reduction technology, which enhances the quality of the output video by minimizing artifacts and disturbances that may affect the viewing experience. This feature is particularly beneficial in situations where video signals may be degraded due to environmental factors. Additionally, the chip includes capabilities for automatic gain control, which helps adjust the signal levels to maintain consistent output quality.

Another significant characteristic of the TVP5158 is its built-in color space conversion. The device can transform the incoming video signals from YCbCr to RGB or vice versa, ensuring compatibility with a wide range of display systems and digital video formats. This feature is essential for applications that work with various video standards and require high fidelity in color representation.

The TVP5158 is designed for low power consumption, making it ideal for battery-operated devices and systems where energy efficiency is crucial. Its small footprint and integration capabilities also allow for easier design and implementation within existing systems without requiring extensive space or additional components.

In summary, the Texas Instruments TVP5158 is a robust video decoder that offers a rich set of features, including support for multiple video formats, advanced noise reduction, automatic gain control, and color space conversion. Its low power requirements and compact design make it an attractive choice for a variety of applications, positioning it as a reliable solution for modern video processing needs.