Functional Description

Table 2−4. I 2C Host Interface Terminal Description

SIGNAL

TYPE

DESCRIPTION

 

 

 

I2CA

I

Slave address selection

 

 

 

SCL

I

Input clock line

 

 

 

SDA

I/O

Input/output data line

2.6.1 Reset and I2C Bus Address Selection

The TVP5147M1 decoder can respond to two possible chip addresses. The address selection is made at reset by an externally supplied level on the I2CA terminal. The TVP5147M1 decoder samples the level of terminal 37 at power up or at the trailing edge of RESETB and configures the I2C bus address bit A0. The I2CA terminal has an internal pulldown resistor to pull the terminal low to set a zero.

Table 2−5. I 2C Address Selection

A6

A5

A4

A3

A2

A1

A0 (I2CA)

R/W

HEX

 

 

 

 

 

 

 

 

 

1

0

1

1

1

0

0 (default)

1/0

B9/B8

 

 

 

 

 

 

 

 

 

1

0

1

1

1

0

1 †

1/0

BB/BA

†If terminal 37 is strapped to DVDD via a 2.2-kΩresistor, I2C device address A0 is set to 1.

2.6.2 I2C Operation

Data transfers occur using the following illustrated formats.

S

10111000

ACK

Subaddress

ACK

Send data

ACK

P

Read from I2C control registers

S

10111000 ACK

Subaddress

ACK

S

10111001

ACK

Receive data

NAK

P

S = I2C bus start condition P = I2C bus stop condition

ACK = Acknowledge generated by the slave

NAK = Acknowledge generated by the master, for multiple-byte read master with ACK each byte except last byte

Subaddress = Subaddress byte

Data = Data byte. If more than one byte of data is transmitted (read and write), the subaddress pointer is automatically incremented.

I2C bus address = Example shown that I2CA is in default mode. Write (B8h), read (B9h)

2.6.3 VBUS Access

The TVP5147M1 decoder has additional internal registers accessible through an indirect access to an internal 24-bit address wide VBUS. Figure 2−17 shows the VBUS register access.

22

TVP5147M1PFP

SLES140A—March 2007

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Texas Instruments TVP5147M1PFP manual Reset and I2C Bus Address Selection, 2 I2C Operation, Vbus Access
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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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