Texas Instruments TVP5147M1PFP manual VBI Data Processor, 6. Supported VBI System

Models: TVP5147M1PFP

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2.7VBI Data Processor

Functional Description

2.7VBI 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

24

TVP5147M1PFP

SLES140A—March 2007

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Texas Instruments TVP5147M1PFP manual VBI Data Processor, 6. Supported VBI System