ST STV6430 User Manual

Features

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■ I

C bus control

■ Video section:

– 7-MHz, low-pass filters on four encoder

video outputs
– DC-coupled inputs
– Each output is capable of driving an AC- or

DC-coupled, 150-Ω video load at 3 V pp

and CVBS output can drive a dual, 75-Ω

video load
– Selectable gain of 6 or 12 dB for each

channel
– Selective video output muting

■ Audio section:

– Stereo sound capability
– Differential or single-ended audio inputs
– Audio outputs drive 2-kΩ loads at 3 V RMS
– Selectable audio gain of 0 to 28 dB
– Audio output muting
– 9 V to 12 V single supply operation
– Click-noise suppression management
– Pop-noise suppression management

■ Low power mode

– Audio/video standby function

Table 1. Device summary

STV6430

Audio/video buffer for single SCART

Data brief

Applications

■ Set-top boxes (IP, cable, satellite, terrestrial)

■ Integrated digital TV plug-in

■ Blu-ray and DVD players

Description

The STV6430 is a fully integrated solution for
filtering and buffering standard-definition signals,
and buffering stereo audio signals from the MPEG
decoder of a digital receiver, Blu-ray or DVD
player, or iDTV plug-in.

The STV6430 embeds buffers and low-pass filters
(7-MHz, SD filters) and a dual audio amplifier that
operates with either differential or single-ended
inputs.

LQFP48 7 × 7 × 1.4 mm3

(48-pin low-profile quad flat pac k)

Order code Temperature range Package Packaging

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STV6430AG 0 to 70 °C LQFP48 (7 × 7 mm
STV6430AGT 0 to 70 °C LQFP48 (7 × 7 mm

August 2011 Doc ID 019026 Rev 1 1/4

For further information contact your local STMicroelectronics sales office.

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Introduction STV6430

1 Introduction

The STV6430 is an I²C-controlled integrated circuit for filtering and buffering audio and
video signals in any single-SCART application. It can be used in products such as SD and
HD set-top boxes or DVD/BD players and recorders for European markets.

It can be connected to six video DAC outputs of an MPEG decoder, allowing simultaneous
switching and driving of either the composite and RGB signals, or the S-video signals only,
to the SCART output. The STV6430 manages the slow blanking and fast blanking signalling
through the I²C bus.

The STV6430 is one of the family of five, pin-compatible products (Figure 1) that complete
the new generation of audio and video switches and buffers from STMicroelectronics.
Together they cover, both technically and price-wise, the whole market spectrum from
mid-range SD retail (zapper set-top boxes or basic recorders) up to DVR HD operators
(set-top boxes or recorders with HD component output).

Features Benefits

Integrated switch from RGB/composite SCART
to S-video SCART.

DC-coupled video inputs. Reduces component count.
AC- and DC-coupled high-drive capability video

outputs (for 70-Ω (minimum) loads).

Fixed-gain video buffers selectable as 6dB or
12 dB.

Smart pop-noise manager. Allows silent swap between active and standby

Selective standby command for audio or each
individual video output.

8-step selectable audio gain up to +28 dB,
supporting output of 3.1 V RMS (mi nimum).

Pin-compatibility with four other products. Combines single-device space-saving (up to 50%)

Pin-compatibility with STV6437BH. Provides dual-source solution at no cost premium

Avoids change of output configuration for video
DACs.

Connects to any type of display and drives several
composite and RF modulator outputs without
external active components.

Makes the device future-proof for next generation
of SoC, with ever-finer technology and lower video
DAC supplies.

modes.
As low as 1-mW standby consumption supporting

compliance to 0.5-W standby requirements.
Easy fine-tune of THD and SNR depending on

requirements, whilst matching any specific audio
output level, including China Cable, and saving
external op-amps.

benefits with commodity price/flexibility benefits to
allow a single PCB design covering the entire
market spectrum.

in case of market shortage or sudden rise in
demand.

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