GS1671 datasheet(2/130 Pages) SEMTECH

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GS1671 HD/SD SDI Integrated Receiver

Data Sheet

53737 - 2

September 2012

2 of 130

Description

The GS1671 is a multi-rate SDI integrated Receiver which

includes complete SMPTE processing, as per SMPTE 292M

and SMPTE 259M-C. The SMPTE processing features can be

bypassed to support signals with other coding schemes.

The GS1671 integrates Gennum's adaptive cable equalizer

technology, achieving unprecedented cable lengths and

jitter tolerance. It features DC restoration to compensate for

the DC content of SMPTE pathological signals.

The device features an Integrated Reclocker with an

internal VCO and a wide Input Jitter Tolerance (IJT) of 0.7UI.

A serial digital loop-through output is provided, which can

be configured to output either reclocked or non-reclocked

serial digital data. The serial digital output can be connected

to an external cable driver.

The device operates in one of four basic modes: SMPTE

mode, DVB-ASI mode, Data-Through mode or Standby

mode.

In SMPTE mode (the default operating mode), the GS1671

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. It also provides a variety of other

packet detection and error handling features. All of these

processing features are optional, and may be individually

enabled or disabled through register programming.

In DVB-ASI mode, sync word detection, alignment and

8b/10b decoding is applied to the received data stream.

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 device can also operate in a lower power Standby

mode. In this mode, no signal processing is carried out and

the parallel output is held static.

Parallel data outputs are provided in 20-bit or 10-bit format

for HD and SD video rates, with a variety of mapping

options. As such, this parallel bus can interface directly with

video processor ICs, and output data can be multiplexed

onto 10 bits for a low pin count interface.

Up to eight channels (two audio groups) of serial digital

audio may be extracted from the video data stream, in

accordance with SMPTE 272M-C and SMPTE 299M.

The output audio formats supported by the device include

AES/EBU and I2S, and two other industry standard serial

digital formats. A variety of audio processing features are

provided to ease implementation. Audio clocks are

internally generated and provided by the device.

Application: Multi-format Audio De-embedder Module

PCLK

10-bit

GS1662

DAC

Switch

Logic

Drivers

Analog

Audio

Outputs

AES

Audio

Outputs

AUDIO 1/ 2

AUDIO 3/ 4

AUDIO 5/ 6

AUDIO 7/ 8

Audio Clocks

SD/HD-SDI

GS1671

SD/HD-SDI

Application: Multi-format Digital VTR/Video Server

Storage:

Tape/HDD/Solid State

Audio

Processor

Video

Processor

10-bit

HV F/P CLK

Audio Outputs

V ideo Output

Audio Clocks

AUDIO 1/ 2

AUDIO 3/ 4

AUDIO 5/ 6

AUDIO 7/ 8

SD/HD-SDI

GS1671

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