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AVPro

廬

5003

Triple SCART A/V Switch

August 2000

DESCRIPTION

The AVPro

廬

5003 is a low cost IC that performs

switching of analog audio and video signals. The

device accepts analog audio and video inputs from

three external sources, typically a video encoder

IC/stereo DAC, an auxiliary SCART connector, and

a VCR SCART connector. The input signals from

these sources are presented to a set of internal

multiplexers that perform the SCART switching

function. Outputs are provided to the VCR and

auxiliary SCART connectors, as well as a TV

SCART connector and an RF modulator. Video

outputs are buffered to drive 150

鈩?/div>

loads. Audio

outputs are buffered to provide 2 Vrms output into

600 ohms. Typical applications for the 5003 include

digital video recorders (DVRs) and digital receivers

for satellite, cable, and terrestrial television.

FEATURES

鈥?/div>

SCART connections for TV, VCR, AUX

鈥?/div>

Integrated video drivers

鈥?/div>

Integrated audio drivers

-

Negative supply eliminates AC coupling

caps

鈥?/div>

5-bit audio attenuation for TV output

- Attenuation from 0 to 31 dB, 1 dB steps

- Mute of TV outputs

鈥?/div>

Serial port control of SCART switching

鈥?/div>

64-lead MQFP packaging (JEDEC MO-108)

VCC

ABLANK

EBLANK

AUX_R

Enc_R

Enc_C

SVHS_Cin

AUX_G

Enc_G

Enc_B

AUX_B

AUX_Fnc

VCR_Fnc

AUX_YCin

VCR_YCin

Enc_YC

Enc_Y

SCLK

SDATA

Serial

Port

VDD

VEE

BLOCK DIAGRAM

Mux

Comparitor

Mux

TV Fn

Output

Digital

Output

BLANK

TV_C

TV_R

TV_G

TV_B

SVHS_Cout

AUX_YCout

TV_YCout

TV_Mod

VCR_YCout

TV_Fnc

DO_0

DO_1

VCR_Lout

VCR_Rout

Lout

TV_Lout

Mono

TV_Rout

Rout

AUX_Lout

AUX_Rout

AUX_Lin

AUX_Rin

Tgen

VCR_Lin

VCR_Rin

Vref

Rbias

Lin

Rin

GND

Vref and

Bias

Mux

Timing

Generator

Mux

型號

版本

描述

廠商

下載
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