GS2986 Multi-Rate SDI Reclocker with Equalization &

De-emphasis

Data Sheet

52134 - 3

July 2012

3 of 41

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