GS2970A Datasheet, PDF (5/150 Pages) Gennum Corporation – Integrated audio clock generator

4.14 Data Format Detection & Indication ..................................................................................... 60
4.15 EDH Detection .............................................................................................................................. 61
4.15.1 EDH Packet Detection ................................................................................................... 61
4.15.2 EDH Flag Detection ........................................................................................................ 62
4.16 Video Signal Error Detection & Indication ......................................................................... 62
4.16.1 TRS Error Detection........................................................................................................ 64
4.16.2 Line Based CRC Error Detection ................................................................................ 64
4.16.3 EDH CRC Error Detection............................................................................................. 65
4.16.4 HD & 3G Line Number Error Detection ................................................................... 65
4.17 Ancillary Data Detection & Indication ................................................................................. 65
4.17.1 Programmable Ancillary Data Detection................................................................ 67
4.17.2 SMPTE 352M Payload Identifier ................................................................................ 68
4.17.3 Ancillary Data Checksum Error ................................................................................. 69
4.17.4 Video Standard Error..................................................................................................... 70
4.18 Signal Processing ......................................................................................................................... 70
4.18.1 TRS Correction & Insertion........................................................................................... 71
4.18.2 Line Based CRC Correction & Insertion ................................................................... 72
4.18.3 Line Number Error Correction & Insertion ............................................................. 72
4.18.4 ANC Data Checksum Error Correction & Insertion ............................................. 72
4.18.5 EDH CRC Correction & Insertion ............................................................................... 72
4.18.6 Illegal Word Re-mapping ............................................................................................. 73
4.18.7 TRS and Ancillary Data Preamble Remapping...................................................... 73
4.18.8 Ancillary Data Extraction............................................................................................. 73
4.18.9 Level B to Level A Conversion .................................................................................... 78
4.19 Audio De-embedder ................................................................................................................... 79
4.19.1 Serial Audio Data I/O Signals...................................................................................... 79
4.19.2 Serial Audio Data Format Support ............................................................................ 81
4.19.3 Audio Processing............................................................................................................. 85
4.19.4 Error Reporting ................................................................................................................ 92
4.20 GSPI - HOST Interface ................................................................................................................ 93
4.20.1 Command Word Description ...................................................................................... 93
4.20.2 Data Read or Write Access........................................................................................... 94
4.20.3 GSPI Timing....................................................................................................................... 95
4.21 Host Interface Register Maps .................................................................................................. 97
4.21.1 Video Core Registers...................................................................................................... 97
4.21.2 SD Audio Core Registers............................................................................................. 111
4.21.3 HD and 3G Audio Core Registers............................................................................. 126
4.22 JTAG Test Operation ................................................................................................................ 141
4.23 Device Power-up ....................................................................................................................... 143
4.24 Device Reset ................................................................................................................................ 143
4.25 Standby Mode ............................................................................................................................ 143
5. Application Reference Design ............................................................................................................. 144
5.1 Typical Application Circuit ......................................................................................................144
6. References & Relevant Standards ....................................................................................................... 145
7. Package & Ordering Information ........................................................................................................ 146
7.1 Package Dimensions ................................................................................................................... 146
7.2 Packaging Data ............................................................................................................................. 147
GS2970A 3Gb/s, HD, SD SDI Receiver
Data Sheet
54244 - 2
September 2012
5 of 150