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GS3470 Datasheet(PDF) 21 Page - Semtech Corporation

Part # GS3470
Description  3G, HD, SD SDI Receiver
PDF  169 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

GS3470 Datasheet(HTML) 21 Page - Semtech Corporation

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GS3470
Final Data Sheet
Rev.8
PDS-060500
September 2017
21 of 169
Semtech
www.semtech.com
Figure 4-2: Flexible Power Down Modes
The device has three other primary modes of operation which include SMPTE mode,
DVB-ASI mode, and Data-Through mode. In SMPTE mode, when receiving a SMPTE
compliant SDI input, the GS3470 performs full SMPTE processing, and features a
number of data integrity checks and measurement capabilities. The device also
supports ancillary data extraction, and can provide entire ancillary data packets through
host-accessible registers. Packet detection and error handling features are also offered.
All processing features are optional, and may be individually enabled or disabled
through register programming. In DVB-ASI mode, sync word detection, alignment, and
8/10bit decoding is applied to the received data stream. While in Data-Through mode,
all forms of SMPTE and DVB-ASI processing are disabled, and the device can be used as
a simple serial to parallel converter.
The GS3470 includes an audio de-embedder and audio clocks are internally generated.
Up to eight channels (two audio groups) of serial digital audio may be extracted from
the video data stream, in accordance with SMPTE ST 272-C and SMPTE ST 299. The
output audio formats supported by the device include AES/EBU and I2S. A variety of
audio processing features are provided to ease implementation.
PCLK
PDATA
Mode A: With CSR access
Default: All functions disabled
PDATA
Mode B: PCLK Active
PDATA
Mode C: Retimed Serial Loopback active
PDATA
Mode D: Non-Retimed Serial
Loopback active
PDATA
Mode E: Retimed Loopback and PCLK
locked to selected Input
PDATA
Mode F: Non-Retimed Loopback with
PCLK (not locked) — Manual Rate Select Mode
PCLK
PCLK
PCLK
PCLK
PCLK
GS3470
GS3470
GS3470
GS3470
GS3470
GS3470



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