STV6418 查看數據表（PDF） - STMicroelectronics
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STV6418 Datasheet PDF : 4 Pages
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Introduction
1
Introduction
STV6418
The STV6418 is an I²C-controlled integrated circuit for switching, filtering and buffering
audio and video signals in any dual, full-SCART application with HD component output. It
can be used in products such as 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 signal only, to
the TV SCART output, as well as the composite or S-video signals to the VCR SCART
output, and the HD component output to RCA HD sockets. Further, the device provides the
switching of the composite and RGB signals, or the S-video signal only, from the VCR
SCART to the TV SCART.
The STV6418 manages the slow blanking and fast blanking signalling through the I²C bus.
The complete set of features of the STV6418 makes it particularly adapted for all middle- to
high-end European HD set-top boxes offering an HD component output as an HD back-up
solution to HDMI potential interoperability issues between source and sink.
The STV6418 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 Avoids video DAC change of output configuration.
to S-video SCART.
AC- and DC-coupled video inputs.
Connects to any core chips on the market or
reduces component count when using positive
signals.
AC- and DC-coupled video outputs.
Connects to any type of display.
Audio gain up to +15dB.
Allows optimization of THD and SNR, 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.
Three selectable SD/HD filters and six
independently-mutable RGB and component
output buffers.
Allows suppression of either SD/HD component
output or SD SCART output when both are
connected to the TV.
Auto startup mode.
Implementing instantaneous SCART loop-through
only when required while the STB is in standby, for
significant power savings.
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Doc ID 014824 Rev 2
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