GS2986 Datasheet, PDF (3/41 Pages) Gennum Corporation – Standards indication in Auto mode

Contents
Features ................................................................................................................................................................. 1
Applications ......................................................................................................................................................... 1
Description ........................................................................................................................................................... 1
Revision History .................................................................................................................................................2
1. Pin Out...............................................................................................................................................................5
1.1 Pin Assignment ..................................................................................................................................5
1.2 Pin Descriptions ................................................................................................................................6
1.3 Default Start-up Settings ................................................................................................................8
2. Electrical Characteristics ............................................................................................................................9
2.1 Absolute Maximum Ratings ..........................................................................................................9
2.2 DC Electrical Characteristics ........................................................................................................9
2.3 AC Electrical Characteristics ..................................................................................................... 10
3. Input/Output Circuits ............................................................................................................................... 13
4. Detailed Description.................................................................................................................................. 17
4.1 Serial Data Input ............................................................................................................................ 17
4.2 Modes of Operation ...................................................................................................................... 17
4.3 Input Trace Equalization ............................................................................................................. 17
4.4 4:1 Input Mux .................................................................................................................................. 18
4.5 Crystal Buffer .................................................................................................................................. 19
4.6 LOS (Loss Of Signal) Detection .................................................................................................. 19
4.7 Serial Digital Reclocker ............................................................................................................... 20
4.8 Lock Detection ................................................................................................................................ 20
4.8.1 Lock Detect and Asynchronous Lock ......................................................................... 21
4.9 Serial Data Output ......................................................................................................................... 21
4.9.1 Output Signal Interface Levels...................................................................................... 21
4.9.2 Adjustable Output Swing................................................................................................ 21
4.9.3 Output De-emphasis ........................................................................................................ 21
4.10 Automatic and Manual Data Rate Selection ...................................................................... 22
4.11 SD/HD Indication ........................................................................................................................ 23
4.12 Bypass Mode ................................................................................................................................. 23
4.13 DVB-ASI ......................................................................................................................................... 24
4.14 Output Mute and Data/Clock Output Selection ............................................................... 24
4.15 Host Interface ............................................................................................................................... 24
4.15.1 Introduction ...................................................................................................................... 24
4.15.2 Legacy Mode & Start-up................................................................................................ 25
4.15.3 Host Interface Mode & Start-up.................................................................................. 25
4.15.4 Clock & Data Timing....................................................................................................... 25
4.15.5 Single Device Operation ............................................................................................... 25
4.15.6 Write Operation - Single Device ................................................................................ 26
4.15.7 Read Operation - Single Device ................................................................................. 27
4.15.8 Daisy Chain Operation.................................................................................................. 29
4.15.9 Read & Write Operation - Daisy Chained Devices .............................................. 30
4.15.10 Writing to all Devices .................................................................................................. 30
4.15.11 Writing to a Single Device in the Chain ................................................................ 31
GS2986 Multi-Rate SDI Reclocker with Equalization &
De-emphasis
Data Sheet
52134 - 3
July 2012
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