Hardware Setup

www.ti.com

5.2.1Additional Setup when DSP Processes Video Only

In this configuration, digital video goes to the DaVinci HD EVM. Digital I2S audio goes to the TLV320DAC32 Audio DAC on the TVP5158EVM. Stereo audio output can then be taken from the TVP5158EVM headphone jack. Make the following additional connections:

1.Samtec HQCD ribbon cable from TVP5158EVM DaVinci Video connector to the DaVinci HD EVM DC_P2 Video Expansion connector.

2.TVP5158EVM headphone jack to audio amplifier/speakers or headphones

5.2.2Additional Setup When DSP Processes Video and Audio

CAUTION

A modification to both the TVP5158EVM and the DaVinci HD EVM must be made if I2S digital audio is to be processed by the DM6467 DSP (see Section 5.2.2.1).

In this configuration, digital video and digital audio go to the DaVinci HD EVM. For the digital audio connection, a hardware modification is required as described in Section 5.2.2.1. The stereo audio is then output from the DaVinci HD EVM headphone jack. After making the hardware modification, make the following additional connections:

1.Samtec HQCD ribbon cable from TVP5158EVM DaVinci Video connector to the DaVinci HD EVM DC_P2 Video Expansion connector

2.Samtec HQCD ribbon cable from TVP5158EVM DaVinci Audio connector to DaVinci HD EVM DC_P3 I/O Expansion connector

3.DaVinci HD EVM headphone jack to audio amplifier/speakers or headphones

5.2.2.1Hardware Modification for I2S Audio to DM6467 DSP

Three 0-Ωresistors must be removed from the TVP5158EVM and three 0-Ωresistors must be removed from the DaVinci HD EVM according to Table 3.

Table 3. Hardware Modifcation for I2S Audio to DM6467

 

Remove From TVP5158EVM

Remove From DaVinci HD EVM

 

 

 

 

 

 

R42 SD_M

R13 MCASP0_ACLKR

 

 

 

 

 

 

R98 MCASP0_EN

R17 MCASP0_AFSR

 

 

 

 

 

 

R99 AUDIO_CLK_EN

R31 MCASP0_AXR1

 

 

 

 

 

 

 

 

 

NOTE: After this modification has been made, the SD_M I2S digital audio output from TVP5158 will no longer be available. The SD_R output must be used and W9 must be jumpered 2-3. If headphone output from the TVP5158EVM is to be tested using the audio mixer (SD_M I2S output), 0-ohm resistor R42 must be reinstalled and W9 must be jumpered 1-2.

5.2.3Jumper Settings with DaVinci HD EVM

When the DaVinci HD EVM is used, the video and/or audio driver software can be set to control the entire system, or can be set to skip I2C programming of the TVP5158. In the latter case, the PC USB interface and the Video Control Center application software are used to initialize and experiment with TVP5158 register settings through a graphical user interface.

12

TVP5158 Evaluation Module

SLEU108 –November 2009

 

 

Submit Documentation Feedback

Copyright © 2009, Texas Instruments Incorporated

Page 12
Image 12
Texas Instruments TVP5158 Additional Setup when DSP Processes Video Only, Hardware Modifcation for I2S Audio to DM6467

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.