Vbi Data Processor; Vdp Configuration - Analog Devices Advantiv ADV7604 Hardware Manual

11 VBI Data Processor

The VBI Data Processor (VDP) of the ADV7604 is capable of slicing multiple VBI data standards
on component video. The VDP decodes the VBI data on the luma channel of YUV data processed
through the CP core.
For low data rate VBI standards like CCAP (Closed Captioning), WSS (Wide Screen Signaling), or
CGMS (Copy Generation Management System), the user can read the decoded data bytes from
2
dedicated I C registers for different standards. I
standards like PDC, UTC, VPS, or GemStar.
The decoded results are also available as ancillary data in the output 656 data stream.
The following VBI data standards can be decoded by the VDP.
525i and 625i:
• Teletext system A, B, C, D, WST or NABTS
• VPS (Video Programming System)
• VITC (Vertical Interval Time Codes)
• WSS
• CGMS
• GemStar
• CCAP
525p and 625p:
• CGMS
720p:
• CGMS
1080i:
• CGMS
• VITC

11.1 VDP Configuration

The VBI data standard that the VDP decodes on a particular line of incoming video has been set by
default, as described in
decoded on any line. The details of manual programming are described in
Rev. F August 2010
Table 66. This can be over-ridden manually and any VBI data can be
2
C readback is also supported for some high data rate
ITU-BT-653/ EIA-516
ETSI EN 300 231 V 1.3.1
BT.1119-1/ETSI.EN.300294
EIA-J CPR-1204/ IEC 61880
EIA-608
322
ADV7604
Table 67.