STV6419 データシートの表示（PDF） - STMicroelectronics
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STV6419 Datasheet PDF : 4 Pages
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Introduction
1
Introduction
STV6419
The STV6419 is an I2C-controlled integrated circuit for switching, filtering and buffering
audio and video signals in any dual, non-full 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 four video DAC outputs of an MPEG decoder, allowing simultaneous
switching and driving of the composite and RGB signals, or the S-video signal only, to the
TV SCART output, as well as the composite signal to the VCR SCART output. Further, the
device provides the switching of the composite and RGB signals, or the S-video signals
only, from the VCR SCART to the TV SCART.
The STV6419 manages the slow blanking and fast blanking signalling through the I2C bus.
The STV6419 provides the minimum required set of features to support the dual-SCART
connector with significant cost reduction over existing solutions (such as STV6417 or
competition) and in line with a price-sensitive, soon-to-be-phased-out legacy topology, for
which set-top box manufacturers are no longer willing to pay a premium.
The STV6419 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 SD component output).
Features
Benefits
DC-coupled video inputs.
Reduces component count.
AC- and DC-coupled high-drive capability video Connects to any type of display and drives several
outputs (for 70-Ω (minimum) loads).
composite and RF modulator outputs without
external active components.
8-step selectable audio gain up to +28 dB,
supporting output of 3.1 V RMS (minimum).
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.
Pin-compatibility with four other products.
Combines single-device space-saving (up to 50%)
benefits with commodity price/flexibility benefits to
allow a single PCB design covering the entire
market spectrum.
Pin-compatibility with STV6417AH.
Provides dual-source solution at no cost premium
in case of market shortage or sudden rise in
demand.
Pin-compatibility with STV6418AH.
Provides dual-source solution at no cost premium
in case of market shortage or sudden rise in
demand.
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Doc ID 014825 Rev 1
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