GS2972 Datasheet, PDF (5/125 Pages) Semtech Corporation – 3G/HD/SD-SDI Serializer with Complete SMPTE Audio & Video Support

Contents
Key Features ........................................................................................................................................................1
Applications ......................................................................................................................................................... 1
Description ........................................................................................................................................................... 2
Functional Block Diagram ..............................................................................................................................3
Revision History .................................................................................................................................................4
1. Pin Out............................................................................................................................................................ 10
1.1 Pin Assignment ............................................................................................................................... 10
1.2 Pin Descriptions ............................................................................................................................. 11
2. Electrical Characteristics ......................................................................................................................... 20
2.1 Absolute Maximum Ratings ....................................................................................................... 20
2.2 Recommended Operating Conditions .................................................................................... 20
2.3 DC Electrical Characteristics ..................................................................................................... 21
2.4 AC Electrical Characteristics ..................................................................................................... 23
3. Input/Output Circuits ............................................................................................................................... 26
4. Detailed Description.................................................................................................................................. 30
4.1 Functional Overview .................................................................................................................... 30
4.2 Parallel Data Inputs ....................................................................................................................... 31
4.2.1 Parallel Input in SMPTE Mode....................................................................................... 33
4.2.2 Parallel Input in DVB-ASI Mode................................................................................... 33
4.2.3 Parallel Input in Data-Through Mode......................................................................... 34
4.2.4 Parallel Input Clock (PCLK) ............................................................................................ 34
4.3 SMPTE Mode ................................................................................................................................... 35
4.3.1 H:V:F Timing ....................................................................................................................... 35
4.3.2 CEA 861 Timing.................................................................................................................. 38
4.4 DVB-ASI Mode ............................................................................................................................... 44
4.5 Data-Through Mode ..................................................................................................................... 44
4.6 Standby Mode ................................................................................................................................. 44
4.7 Audio Embedding .......................................................................................................................... 45
4.7.1 Serial Audio Data Inputs ................................................................................................. 45
4.7.2 Serial Audio Data Format Support............................................................................... 47
4.7.3 3G Mode................................................................................................................................ 49
4.7.4 HD Mode............................................................................................................................... 49
4.7.5 SD Mode................................................................................................................................ 50
4.7.6 Audio Embedding Operating Modes .......................................................................... 50
4.7.7 Audio Packet Detection................................................................................................... 51
4.7.8 Audio Packet Deletion ..................................................................................................... 51
4.7.9 Audio Packet Detection and Deletion ........................................................................ 51
4.7.10 Audio Mute (Default Off).............................................................................................. 52
4.7.11 Audio Channel Status .................................................................................................... 53
4.7.12 Audio Crosspoint............................................................................................................. 54
4.7.13 Audio Word Clock .......................................................................................................... 55
4.7.14 Channel & Group Activation ....................................................................................... 55
4.7.15 Audio FIFO - SD............................................................................................................... 56
4.7.16 Audio FIFO - HD and 3G............................................................................................... 57
GS2972 3G/HD/SD-SDI Serializer with Complete
SMPTE Audio & Video Support
Final Data Sheet Rev. 9
GENDOC-047479 September 2013
www.semtech.com
5 of 125