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STV6417
Audio/video switch and 6-channel SD video filter
Data Brief
Features

IC bus control Interrupt or auto-startup mode: low power consumption Video section - 3 CVBS inputs, 2 CVBS outputs - 3 Y/C inputs, 3 Y/C outputs - Low pass filters (LPF) for standard definition (1H) on six inputs plus bypass LPF (2H). - 6 dB gain on all CVBS/Y and C outputs - Integrated 150 buffers - AC- or DC-coupled video outputs - 1 CVBS output (Y/C adder): RFMOD - 2 slow blanking inputs/outputs
SCART1 (TV)
R/C G B FAST BLANK CVBS AUDIO L AUDIO R CVBS/Y AUDIO L AUDIO R SLOW BLANK
- Bottom clamp on all CVBS/Y and RGB inputs; average clamp on C inputs; synchronize clamp on PrPb inputs
-
Audio section - 3 stereo inputs, 2 stereo outputs - 1 mono sound output - Stereo-to-mono sound capability - Differential or single-ended audio encoder input - 0/6/9 dB selectable gain on one stereo input - Full-range volume control with soft control - Audio muting on all outputs
STV6417 R/C/Pr, G/C, B/Pb Switches + Filter C, Y, CVBS/Y Switches + Filter Audio Switches Volume Control
R/Pr/C G/Y B/Pb FAST BLANK CVBS/Y C AUDIO L AUDIO R Y INTERRUPT IC
MPEG DECODER
AUDIO L
SCART2 (VCR)
SLOW BLANK R/C/Pr G/Y B/Pb FAST BLANK CVBS/Y AUDIO L AUDIO R CVBS/Y C AUDIO L AUDIO R
AUDIO R
CVBS
Slow & Fast blank Interrupt
CVBS
RF MOD
AUDIO Mono
CVBS/Y detection Low-power Std-by
June 2008
Rev 1
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Description
STV6417
1
Description
The STV6417 is an IC-controlled integrated circuit designed to switch both audio and video in any dual full-SCART application such as set-top boxes or DVD recorders for European markets. The STV6417 is one of the four brand new products that complete the new generation of audio and video switches from STMicroelectronics, which cover both technically and pricewise the whole market spectrum from low-cost SD retail (zapper set-top box or basic recorder) up to DVR HD operator (set-top boxes or recorders with component outputs). Its complete set of features makes it particularly adapted for all operator and high end retail set-top boxes. Figure 1. STMicroelectronics new generation of audio and video switches
Retail FTA SD Zapper STV6418 STV6417 STV6419 STV6416 FTA SD CI/CAS SD DVR HD
Operator SD HD
Small footprint
The first key differentiator of the STV6417 is its size. It is supplied in a LQFP-48 7 x 7 package, compared with older generation devices that used LQFP-64 10 x 10 and LQFP-64 14 x 14 packages.
Reduced bill-of-material
A second key differentiator is the STV6417's ability to reduce the bill-of-material. The STV6417 can interact directly with an MPEG decoder audio output, whether it is voltage- or current-driven. In the latter case, an integrated programmable gain allows designers to reduce the bill-of-material by removing the need for external operational amplifier circuitry. The STV6417 video inputs can be driven either in AC- or DC-coupled mode from the MPEG decoder video DAC outputs, again decreasing the need for external components. The STV6417 can drive AC- or DC-coupled output loads, saving the need for additional external buffer circuitry or coupling capacitors. A dedicated video and a mono audio output are available to drive an RF modulator. The STV6417 integrates 6 dB video buffers in series with each of the six by-passable standard definition (SD) low-pass filters. It can connect to six video DAC outputs of the MPEG decoder, allowing it to switch and drive at the same time the composite and RGB signals on the TV SCART outputs, as well as the S-video signal on the VCR SCART output.
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STV6417
Description The STV6417's RGB inputs connected to both the MPEG decoder and VCR SCART are YPbPr-compatible and can therefore be adapted for other niche applications (SCART-tocomponent bundled connector).
Optimized power consumption in stand-by
The third key differentiator of the STV6417 is its power consumption, especially in stand-by. It embeds a brand new function that allows an automatic VCR-to-TV or TV-to-VCR SCART loop-through as soon as a composite or a luminance signal is active on one of the SCART inputs. This function allows an instantaneous loop-through while saving power consumption in stand-by. The STV6417 can achieve a market-lowest 50 mW stand-by consumption, demanding less than 10% of the power budget that shall soon be required by legislation or according to the average existing rules of conduct.
Platform scalability
Finally, the fourth key differentiator of the STV6417 and its associated products is their ability to cover all the dual SCART market spectrum, offering cost savings not only on device and bill-of-materials, but also on engineering and scalability cost. For example, the STV6417 shares the same footprint as the STV6419AG, allowing either one step for connectivity downgrades for a single HD platform, or one step for connectivity upgrades for a single SD platform in order to serve different customer connectivity requirements (support for S-video on VCR SCART output, support for Canal+ analog, component output allowed or not for HD content copyright protection), optimizing platform cost without re-engineering. Figure 2. Platform scalability
TV SCART out No RGB Loop-through No YPbPr out
TV SCART out RGB Loop-through No YPbPr out
TV SCART in/out RGB Loop-through No YPbPr out
TV SCART in/out RGB Loop-through YPbPr out
VFQFPN-28 5x5 High-End STB HD DVR Retail FTA CA/CI SD Retail FTA Zapper STV6416AJ
LQFP-48 7x7 STV6419AG STV6419AG STV6419AG STV6419AG
LQFP-48 7x7 STV6417AG STV6417AG STV6417AG
TQFP-48 7x7 EP STV6418AH
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Application
STV6417
2
Application
Typical applications for the STV6417 are:

Full dual-SCART standard definition (SD) set-top boxes (free-to-air or operator) Full dual-SCART high definition (HD) set-top boxes (free-to-air or operator) DVD recorders
2.1
Ordering information
Table 1. Ordering information
Part number STV6417AG LQFP-48 7 x 7 Packaging
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Revision history
3
Revision history
Table 2.
Date 27-Jun-2008
Document revision history
Revision 1 Initial release. Changes
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STV6417
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