Texas Instruments TVP5146EVM System Level Description, TVP5160EVM System Level Block Diagram

SLEU063

3 System Level Description

The system block diagram illustrated in Figure 2 provides an example of how the TVP5160EVM may be used for evaluation. Typically, the analog input is a CVBS signal provided by a video source such as a pattern generator or a DVD player running a test DVD.

The TVP5160EVM itself is configured with the provided 5-V supply and the parallel port cable. The analog output is typically YPbPr to reduce the number of artifacts caused by backend processing or re-encoding. These outputs are then fed into a high-end or studio-quality display monitor such as a Sony Trinitron.

At the same time, the CVBS output from the encoder may also be fed into a video test measurement system such as the Tektronix VM700. This allows various tests to be run and also allows the user to analyze the video waveform or vectorscope.

PC

5V Supply

Tektronix

TG2000 CVBS

Video

Source

TVP5160EVM

Y

Pb

Pr

NTSC/PAL CVBS Monitor

Tektronix

VM700

Video

Measurement

Figure 2. TVP5160EVM System Level Block Diagram

8 TVP5160EVM User’s Guide