5002B データシートの表示（PDF） - TDK Corporation

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5002B

Dual SCART A/V Switch

TDK Corporation 

AVPro® 5002B

Dual SCART A/V Switch

FUNCTIONAL DESCRIPTION

The 5002B is an audio/video switching device. The

device integrates both audio and video drivers so

that it can directly drive the SCART interface. The

use of a -5 volt supply eliminates the need for AC

coupling capacitors on the audio outputs. All

programmable functions of the device are controlled

through a standard I2C serial interface and a set of

internal registers. This device will interface to an

external video encoder that provides six video

outputs. In addition, the 5002B includes two

programmable digital outputs and inputs for the TV

SCART audio /video.

SCART VIDEO SWITCHING

The device is designed to accept video signals from

an auxiliary SCART connector, TV SCART

connector, and an external video encoder/DAC

device. The device includes a set of analog

multiplexers that receive video signals from these

sources and allows routing of the signals to the

various video outputs. The video output drivers have

a nominal gain of 1.83 V/V to allow for a series

resistance of 62 ohms prior to the 75 ohm

termination. A block diagram of the video switching

function is provided in Figure 1. Details of the

register settings are provided in the section titled

“Serial Port Register Tables”.

ABLANK

EBLANK

Aux_R

Enc_R

Enc_C

2V

0V

Mux

Mux

Gain

BLANK

TV_R

Aux_G

Enc_G

Aux_B

Enc_B

Mux

Mux

Mux

Aux_Cout

TV_G

TV_B

Enc_Y

Enc_YC

Aux_YC

Mux

Mux

TV_YCout

Aux_YCout

Mod_YC

Aux_Fnc

Comparator VGen

Mux

TV_Fnc

Figure 1: 5002B Video switching block diagram

2

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