GS3471 datasheet(4/179 Pages) SEMTECH

4 / 179 page

GS3471

Final Data Sheet Rev.4

PDS-060498

September 2017

4 of 179

Semtech

www.semtech.com

Contents

1. Pin Out .................................................................................................................................................................7

1.1 Pin Assignment ...................................................................................................................................7

1.2 Pin Descriptions ..................................................................................................................................7

2. Electrical Characteristics............................................................................................................................. 11

2.1 Absolute Maximum Ratings ........................................................................................................ 11

2.2 Recommended Operating Conditions .................................................................................... 11

2.3 DC Electrical Characteristics ........................................................................................................ 12

2.4 AC Electrical Characteristics ......................................................................................................... 14

3. Input/Output Circuits.................................................................................................................................. 18

4. Detailed Description.................................................................................................................................... 21

4.1 Functional Overview ...................................................................................................................... 21

4.2 Device Power-Up ............................................................................................................................. 23

4.2.1 Power-Down Mode............................................................................................................. 23

4.2.2 Device Reset .......................................................................................................................... 25

4.3 Automatic (Adaptive) Cable Equalization .............................................................................. 25

4.3.1 Cable Length Indication.................................................................................................... 25

4.3.2 Programmable Squelch Threshold ............................................................................... 26

4.3.3 Equalizer Loss of Signal (EQ LOS) .................................................................................. 26

4.4 Modes of Operation ........................................................................................................................ 28

4.4.1 Auto and Manual Mode .................................................................................................... 28

4.4.2 Low Latency Video Path....................................................................................................29

4.4.3 SMPTE and SMPTE Bypass Mode ................................................................................... 29

4.4.4 DVB-ASI Mode ...................................................................................................................... 30

4.5 Digital Differential Input (DDI/DDI) ........................................................................................... 30

4.6 Serial Digital Input (SDI/SDI) ........................................................................................................ 30

4.6.1 Upstream Launch Swing Compensation .................................................................... 30

4.7 Serial Digital Loop-Through Output .........................................................................................30

4.8 Serial Digital Retimer ...................................................................................................................... 31

4.9 External Crystal/Reference Clock ............................................................................................... 31

4.10 Lock Detect ...................................................................................................................................... 32

4.11 Parallel Data Outputs ................................................................................................................... 32

4.11.1 Parallel Data Bus Output Levels................................................................................... 32

4.11.2 Parallel Output in SMPTE Mode................................................................................... 32

4.11.3 Parallel Output in DVB-ASI Mode................................................................................ 33

4.11.4 Parallel Output in Data-Through Mode .................................................................... 33

4.11.5 Parallel Output Data Format Clock/PCLK Settings ............................................... 33

4.11.6 DDR Parallel Clock Timing ............................................................................................. 35

4.12 Timing Signal Extraction ............................................................................................................ 37

4.12.1 Automatic Switch Line Lock Handling ...................................................................... 37

4.12.2 Manual Switch Line Lock Handling ............................................................................ 38

4.13 Programmable Multi-Function Outputs ............................................................................... 39

4.14 H:V:F Timing Signal Extraction ................................................................................................. 40

4.14.1 CEA-861 Timing Generation ......................................................................................... 42

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