Functional Description

2.11.2AFE Gain Control Register

Subaddress

 

01h

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Default

 

0Fh

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

6

 

 

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

Reserved

 

1

1

AGC chroma

AGC luma

Bit 3: 1 must be written to this bit.

Bit 2: 1 must be written to this bit.

AGC chroma enable: Controls automatic gain in the chroma/PbPr channel:

0 = Manual (if AGC luma is set to manual, AGC chroma is forced to be in manual)

1 = Enabled auto gain, applied a gain value acquired from the sync channel for S-video and component mode. When AGC luma is set, this state is valid. (default)

AGC luma enable: Controls automatic gain in the embedded sync channel of CVBS, S-video, component video:

0 = Manual gain, AFE coarse and fine gain frozen to the previous gain value set by AGC when this bit is set to 0.

1 = Enabled auto gain applied to only the embedded sync channel (default)

These settings only affect the analog front-end (AFE). The brightness and contrast controls are not affected by these settings.

2.11.3Video Standard Register

Subaddress

 

 

02h

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Default

 

 

00h

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

 

 

6

 

 

5

 

4

 

3

2

 

1

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reserved

 

 

 

 

Video standard [2:0]

 

Video standard [2:0]:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CVBS and S-Video

 

 

 

Component Video

 

 

000

= Autoswitch mode (default)

Autoswitch mode (default)

 

 

 

 

 

001

= (M, J) NTSC

 

Component 525

 

 

 

 

 

 

010

= (B, D, G, H, I, N) PAL

 

Component 625

 

 

 

 

 

 

011

= (M) PAL

 

 

 

Reserved

 

 

 

 

 

 

100

= (Combination-N) PAL

 

Reserved

 

 

 

 

 

 

101

= NTSC 4.43

 

 

 

Reserved

 

 

 

 

 

 

110

= SECAM

 

 

 

Reserved

 

 

 

 

 

 

111

= PAL 60

 

 

 

Reserved

 

 

 

 

 

With the autoswitch code running, the user can force the decoder to operate in a particular video standard mode by writing the appropriate value into this register. Changing these bits causes the register settings to be reinitialized.

32

TVP5147M1PFP

SLES140A—March 2007

Page 40
Image 40
Texas Instruments TVP5147M1PFP manual AFE Gain Control Register, Video Standard Register, Cvbs and S-Video Component Video

TVP5147M1PFP specifications

The Texas Instruments TVP5147M1PFP is a versatile video decoder that stands out in the realm of analog video processing. This device is particularly designed for high-quality video applications, making it an excellent choice for a variety of consumer and professional electronics that require reliable video decoding capabilities.

One of the main features of the TVP5147 is its ability to decode multiple video formats, including NTSC, PAL, and SECAM. This flexibility allows the decoder to seamlessly interface with various video sources from different geographic regions, providing a global solution for video applications. The TVP5147 includes advanced synchronization features, ensuring it can effectively handle video signals that may vary in timing and quality.

The device is equipped with a sophisticated 10-bit analog-to-digital converter (ADC), which enhances the precision and clarity of the digital video output. This high-resolution capability allows for improved color accuracy and detail, leading to a more lifelike video representation. Additionally, the TVP5147 utilizes advanced digital processing technologies, including noise reduction and image enhancement features, contributing to outstanding image quality even in less than ideal input conditions.

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