G2R-14-12VDC Datasheet, PDF (14/73 Pages) Texas Instruments – Ultralow Power NTSC/PAL/SECAM Video Decoder With RObust Sync Detector

2.7 Timing Processor
The timing processor is a combination of hardware and software running in the internal microprocessor that serves
to control horizontal lock to the input sync pulse edge, AGC and offset adjustment in the analog front end, vertical
sync detection, and Macrovisiont detection.
2.8 VBI Data Processor
The TVP5150A VBI data processor (VDP) slices various data services like teletext (WST, NABTS), closed caption
(CC), wide screen signaling (WSS), etc. These services are acquired by programming the VDP to enable standards
in the VBI. The results are stored in a FIFO and/or registers. The teletext results are stored in a FIFO only. Table 2−1
lists a summary of the types of VBI data supported according to the video standard. It supports ITU-R BT. 601
sampling for each.
Table 2−1. Data Types Supported by the VDP
LINE MODE
REGISTER (D0h−FCh)
BITS [3:0]
0000b
0000b
0001b
0001b
0010b
0010b
0011b
0011b
0100b
0100b
0101b
0101b
0110b
0110b
0111b
0111b
1000b
1000b
1001b
1001b
1010b
1010b
1011b
1011b
1100b
1100b
1101b
1110b
1111b
SAMPLING
RATE (0Dh)
BIT 7
x
1
x
1
x
1
x
1
x
1
x
1
x
1
x
1
x
1
x
1
x
1
x
1
x
1
x
x
x
NAME
x
WST SECAM 6
x
WST PAL B 6
x
WST PAL C 6
x
WST, NTSC B 6
x
NABTS, NTSC C 6
x
NABTS, NTSC D 6
x
CC, PAL 6
x
CC, NTSC 6
x
WSS, PAL 6
x
WSS, NTSC 6
x
VITC, PAL 6
x
VITC, NTSC 6
x
VPS, PAL 6
x
x
Active Video
DESCRIPTION
Reserved
Teletext, SECAM, ITU-R BT.601
Reserved
Teletext, PAL, System B, ITU-R BT.601
Reserved
Teletext, PAL, System C, ITU-R BT.601
Reserved
Teletext, NTSC, System B, ITU-R BT.601
Reserved
Teletext, NTSC, System C, ITU-R BT.601
Reserved
Teletext, NTSC, System D (Japan), ITU-R BT.601
Reserved
Closed caption PAL, ITU-R BT.601
Reserved
Closed caption NTSC, ITU-R BT.601
Reserved
Wide-screen signal, PAL, ITU-R BT.601
Reserved
Wide-screen signal, NTSC, ITU-R BT.601
Reserved
Vertical interval timecode, PAL, ITU-R BT.601
Reserved
Vertical interval timecode, NTSC, ITU-R BT.601
Reserved
Video program system, PAL, ITU-R BT.601
Reserved
Reserved
Active video/full field
2−3