ST STV6417 User Manual
Audio/video switch and 6-channel SD video filter
Features
2
■ I
C bus control
■ Interrupt signal output
■ Video section:
– Three CVBS inputs, two CVBS outputs
– Three Y/C inputs, three Y/C outputs
– Low-pass filters (LPF) for standard
definition (1H) on six inputs plus bypass
LPF (2H).
– Gain of 6 dB on all CVBS/Y and C outputs
– Integrated 150-Ω buffers
– Two RGB/ two FB Inputs, one high
impedance mode (HZ) RGB/FB output with
6-dB adjustable gain (from +3 dB to +9 dB)
– Two YPrPb inputs
– AC- or DC-coupled video outputs
– One CVBS outp ut (Y/C adder )
– Two slow blanking inputs/outputs
– Bottom clamp on all CVBS/Y and RGB
inputs, average clamp on C inputs,
synchronized clamp on PrPb inputs
– Bi-direction al control for VCR R/C output
and for TV B output
– AC-coupled inputs and AC- or DC-coupled
inputs for video signal from encoder with
internal clamp and bias
– Video detection block in low power auto
startup mode
– Crosstalk: 50 dB minimum
– Video muting on all outputs
■ Audio section:
– Three stereo inputs, two stereo outputs
.
Table 1. Device summary
STV6417
Data brief
– One mono sound output
– Stereo-to-mono sound capability
– Differential or single-ended audio input
– Selectable gain of 0, 6 or 9 dB on one
– Full range volume control with soft control
– Audio muting on all outputs
Applications
■ Set-top boxes (IP, cable, satellite, terrestrial)
■ Integrated digital TV plug-in
■ Blu-ray and DVD players
Description
The STV6417 is a highly integrated I2C buscontrolled audio and video switch matrix,
optimized for use in digital set-top box
applications. It provides all the audio and video
routings required in a full two-SCART set-top box
design.
The STV6417 is a fully integrated solution for
filtering and buffering SD signals
LQFP48 7 × 7 × 1.4 mm3
(48-pin low-profile quad flat pac k)
stereo input
Order code Temperature range Package Packaging
2
STV6417AG 0 to 70 °C LQFP48 (7 × 7 mm
STV6417AGT 0 to 70 °C LQFP48 (7 × 7 mm
September 2011 Doc ID 014823 Rev 2 1/4
For further information contact your local STMicroelectronics sales office.
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Introduction STV6417
1 Introduction
The STV6417 is an I²C-controlled integrated circuit for switching, filtering and buffering
audio and video signals in any dual, 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 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. 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 STV6417 manages the slow blanking and fast blanking signalling through the I²C bus.
The complete set of features of the STV6417 makes it particularly adapted for all low- to
high-end European HD set-top boxes.
The STV6417 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
Integrated switch from RGB/Composite SCART
to S-video SCART.
AC- and DC-coupled video inputs. Connects with any core chip on the market or
AC- and DC-coupled video outputs. Connects to any type of display.
Audio gain up to +15 dB. Allows optimization of THD and SNR, and saving
Pin-compatibility with four other products. Combines single-device space-saving (up to 50%)
Pin-compatibility with STV6418AH. Provides dual-source solution at no cost premium
Auto startup mode. Implements instantaneous SCART loop-through
Avoids video DAC change of output configuration.
reduces component count when using positive
signals.
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.
only when required while the STB is in standby, for
significant power savings.
2/4 Doc ID 014823 Rev 2
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