GS1675 SD/HD SDI Reclocker

Data Sheet

54174 - 1

June 2011

2 of 37

Contents

Key Features........................................................................................................................................................1

Typical Application Circuit.............................................................................................................................1

1. Pin Out...............................................................................................................................................................4

1.1 Pin Assignment ..................................................................................................................................4

1.2 Pin Descriptions ................................................................................................................................5

1.3 Default Start-up Settings ................................................................................................................7

2. Electrical Characteristics ............................................................................................................................8

2.1 Absolute Maximum Ratings ..........................................................................................................8

2.2 DC Electrical Characteristics ........................................................................................................8

2.3 AC Electrical Characteristics ........................................................................................................9

3. Functional Description ............................................................................................................................. 11

3.1 Serial Data Input ............................................................................................................................ 11

3.2 Modes of Operation ...................................................................................................................... 11

3.3 2:1 Input Mux .................................................................................................................................. 11

3.4 Crystal Buffer .................................................................................................................................. 12

3.5 LOS (Loss Of Signal) Detection .................................................................................................. 12

3.6 Serial Digital Reclocker ............................................................................................................... 13

3.7 Lock Detection ................................................................................................................................ 13

3.7.1 Lock Detect and Asynchronous Lock ......................................................................... 14

3.8 Serial Data Output ......................................................................................................................... 14

3.8.1 Output Signal Interface Levels...................................................................................... 14

3.8.2 Adjustable Output Swing................................................................................................ 14

3.9 Automatic and Manual Data Rate Selection ......................................................................... 14

3.10 SD/HD Indication ........................................................................................................................ 15

3.11 Bypass Mode ................................................................................................................................. 15

3.12 DVB-ASI ......................................................................................................................................... 16

3.13 Output Mute and Data/Clock Output Selection ............................................................... 16

3.14 Host Interface ............................................................................................................................... 17

3.14.1 Introduction ...................................................................................................................... 17

3.14.2 Legacy Mode & Startup ................................................................................................. 17

3.14.3 Host Interface Mode & Startup ................................................................................... 17

3.14.4 Clock & Data Timing....................................................................................................... 18

3.14.5 Single Device Operation............................................................................................... 18

3.14.6 Write Operation - Single Device ................................................................................ 19

3.14.7 Read Operation - Single Device ................................................................................. 20

3.14.8 Daisy Chain Operation.................................................................................................. 22

3.14.9 Read & Write Operation - Daisy Chained Devices .............................................. 23

3.14.10 Writing to all Devices ..................................................................................................23

3.14.11 Writing to a Single Device in the Chain ................................................................ 24

3.14.12 Reading from all Devices ........................................................................................... 24

3.14.13 Reading from a Single Device in the Chain.......................................................... 25

3.14.14 Host Register Map......................................................................................................... 26