Functional Description

2.11.66 VDP TTX Filter And Mask Registers

Subaddress

B1h

B2h

B3h

B4h

B5h

B6h

B7h

 

B8h

B9h

BAh

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Default

00h

00h

00h

00h

00h

00h

00h

 

00h

00h

00h

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Subaddress

 

7

 

 

6

5

 

 

4

 

 

3

 

 

2

 

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B1h

 

 

 

 

Filter 1 mask 1

 

 

 

 

 

 

 

 

Filter 1 pattern 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B2h

 

 

 

 

Filter 1 mask 2

 

 

 

 

 

 

 

 

Filter 1 pattern 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B3h

 

 

 

 

Filter 1 mask 3

 

 

 

 

 

 

 

 

Filter 1 pattern 3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B4h

 

 

 

 

Filter 1 mask 4

 

 

 

 

 

 

 

 

Filter 1 pattern 4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B5h

 

 

 

 

Filter 1 mask 5

 

 

 

 

 

 

 

 

Filter 1 pattern 5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B6h

 

 

 

 

Filter 2 mask 1

 

 

 

 

 

 

 

 

Filter 2 pattern 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B7h

 

 

 

 

Filter 2 mask 2

 

 

 

 

 

 

 

 

Filter 2 pattern 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B8h

 

 

 

 

Filter 2 mask 3

 

 

 

 

 

 

 

 

Filter 2 pattern 3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B9h

 

 

 

 

Filter 2 mask 4

 

 

 

 

 

 

 

 

Filter 2 pattern 4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BAh

 

 

 

 

Filter 2 mask 5

 

 

 

 

 

 

 

 

Filter 2 pattern 5

 

For an NABTS system, the packet prefix consists of five bytes. Each byte contains 4 data bits (D[3:0]) interlaced with 4 Hamming protection bits (H[3:0]):

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

 

 

 

 

 

 

 

 

D[3]

H[3]

D[2]

H[2]

D[1]

H[1]

D[0]

H[0]

Only data portion D[3:0] from each byte is applied to a teletext filter function with corresponding pattern bits P[3:0] and mask bits M[3:0]. The filter ignores the Hamming protection bits.

For WST system (PAL or NTSC), the packet prefix consists of two bytes. The two bytes contain three bits of magazine number (M[2:0]) and five bits of row address (R[4:0]), interlaced with eight Hamming protection bits H[7:0]:

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

 

 

 

 

 

 

 

 

R[0]

H[3]

M[2]

H[2]

M[1]

H[1]

M[0]

H[0]

 

 

 

 

 

 

 

 

R[4]

H[7]

R[3]

H[6]

R[2]

H[5]

R[1]

H[4]

The mask bits enable filtering using the corresponding bit in the pattern register. For example, a 1 in the LSB of mask 1 means that the filter module must compare the LSB of nibble 1 in the pattern register to the first data bit on the transaction. If these match, then a true result is returned. A 0 in a bit of mask means that the filter module must ignore that data bit of the transaction. If all 0s are programmed in the mask bits, then the filter matches all patterns returning a true result (default 00h).

SLES140A—March 2007

TVP5147M1PFP

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Texas Instruments TVP5147M1PFP manual VDP TTX Filter And Mask Registers, Bit
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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.

Another notable characteristic of the TVP5147M1PFP is its support for various output formats, including ITU-R BT.601 and 656, which facilitates easy integration into different systems. The device can also provide various output resolutions, catering to the needs of diverse applications ranging from standard definition to high definition displays.

In terms of connectivity, the TVP5147 offers multiple input options, including composite video, S-video, and component video interfaces. This versatility ensures that it can accommodate a wide range of video sources, from traditional VHS players to modern digital cameras. Furthermore, the integrated video control features allow for easy adjustment of parameters such as brightness, contrast, and saturation.

The power consumption of the TVP5147M1PFP is optimized for low-energy applications while maintaining high performance, making it suitable for battery-powered devices and energy-efficient designs. Overall, the Texas Instruments TVP5147M1PFP is an exceptional video decoder that blends flexibility, high quality, and advanced technology, making it a preferred choice for video processing in numerous consumer and industrial applications. Its combination of features ensures reliable performance and high-quality output, fulfilling the demands of modern multimedia environments.
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