GS2960A Datasheet, PDF (3/99 Pages) Gennum Corporation – Ancillary data extraction

Contents
Key Features ........................................................................................................................................................1
Applications ......................................................................................................................................................... 1
Description ........................................................................................................................................................... 1
Functional Block Diagram ..............................................................................................................................2
1. Pin Out...............................................................................................................................................................7
1.1 Pin Assignment ..................................................................................................................................7
1.2 Pin Descriptions ................................................................................................................................7
2. Electrical Characteristics ......................................................................................................................... 14
2.1 Absolute Maximum Ratings ....................................................................................................... 14
2.2 Recommended Operating Conditions .................................................................................... 14
2.3 DC Electrical Characteristics ..................................................................................................... 15
2.4 AC Electrical Characteristics ..................................................................................................... 17
3. Input/Output Circuits ............................................................................................................................... 22
4. Detailed Description.................................................................................................................................. 25
4.1 Functional Overview .................................................................................................................... 25
4.2 SMPTE 425M Mapping - 3G Level A and Level B Formats ............................................... 25
4.2.1 Level A Mapping................................................................................................................ 25
4.2.2 Level B Mapping ................................................................................................................ 26
4.3 Serial Digital Input ........................................................................................................................ 26
4.4 Serial Digital Loop-Through Output ........................................................................................ 26
4.5 Serial Digital Reclocker ............................................................................................................... 27
4.5.1 PLL Loop Bandwidth ........................................................................................................ 27
4.6 External Crystal/Reference Clock ........................................................................................... 28
4.7 Lock Detect ...................................................................................................................................... 29
4.7.1 Asynchronous Lock .......................................................................................................... 30
4.7.2 Signal Interruption............................................................................................................ 31
4.8 SMPTE Functionality .................................................................................................................... 31
4.8.1 Descrambling and Word Alignment ........................................................................... 31
4.9 Parallel Data Outputs ................................................................................................................... 32
4.9.1 Parallel Data Bus Buffers................................................................................................. 32
4.9.2 Parallel Output in SMPTE Mode ................................................................................... 35
4.9.3 Output Data Format in DVB-ASI Mode...................................................................... 35
4.9.4 Parallel Output in Data-Through Mode ..................................................................... 36
4.9.5 Parallel Output Clock (PCLK)......................................................................................... 36
4.9.6 DDR Parallel Clock Timing ............................................................................................. 37
4.10 Timing Signal Generator ........................................................................................................... 39
4.10.1 Manual Switch Line Lock Handling.......................................................................... 40
4.10.2 Automatic Switch Line Lock Handling .................................................................... 41
4.10.3 Switch Line Lock Handling During Level B to Level A Conversion ............... 41
4.11 Programmable Multi-function Outputs ............................................................................... 43
4.12 H:V:F Timing Signal Generation ............................................................................................ 44
4.12.1 CEA-861 Timing Generation ....................................................................................... 46
4.13 Automatic Video Standards Detection ................................................................................ 52
4.13.1 2K Support......................................................................................................................... 56
GS2960A 3Gb/s, HD, SD SDI Receiver
Data Sheet
54384 - 2
September 2012
3 of 99