Texas Instruments TVP5147M1PFP - Manual (Page 32)

Functional Description
24 SLES140A—March 2007 TVP5147M1PFP
2.7 VBI Data Processor
The TVP5147M1 VBI data processor (VDP) slices various data services like teletext (WST, NABTS), closed
caption (CC), wide screen signaling (WSS), program delivery control (PDC), vertical interval time code (VITC),
video program system (VPS), copy generation management system (CGMS) data, and electronic program
guide (Gemstar) 1x/2x. Table 2−6 shows the supported VBI system.
These services are acquired by programming the VDP to enable the reception of one or more vertical blank
interval (VBI) data standard(s) during the VBI. The VDP can be programmed on a line-per-line basis to enable
simultaneous reception of different VBI formats, one per line. The results are stored in a FIFO and/or registers.
Because of the high data bandwidth, teletext results are stored in FIFO only. The TVP5147M1 decoder
provides fully decoded V-Chip data to the dedicated registers at subaddresses 80 0540h−80 0543h.
Table 2−6. Supported VBI System
VBI SYSTEM STANDARD LINE NUMBER NUMBER OF BYTES
Teletext WST A SECAM 6−23 (Fields 1 and 2) 38
Teletext WST B PAL 6−22 (Fields 1 and 2) 43
Teletext NABTS C NTSC 10−21 (Fields 1 and 2) 34
Teletext NABTS D NTSC-J 10−21 (Fields 1 and 2) 35
Closed Caption PAL 22 (Fields 1 and 2) 2
Closed Caption NTSC 21 (Fields 1 and 2) 2
WSS PAL 23 (Fields 1 and 2) 14 bits
WSS-CGMS NTSC 20 (Fields 1 and 2) 20 bits
VITC PAL 6−22 9
VITC NTSC 10−20 9
VPS (PDC) PAL 16 13
V-Chip (decoded) NTSC 21 (Fields 1 and 2) 2
Gemstar 1x NTSC 2
Gemstar 2x NTSC 5 with frame byte
User Any Programmable Programmable