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Appendix A
(continued)
These registers program the specific VBI standard at a specific line in the video field.
Bit 7:
0
Disable filtering of null bytes in closed caption modes
1
Enable filtering of null bytes in closed caption modes (default)
In teletext modes, bit 7 enables the data filter function for that particular line. If it is set to 0, then the data filter passes all data on that line.
Bit 6:
0
Send VBI data to registers only.
1
Send VBI data to FIFO and the registers. Teletext data only goes to FIFO. (default)
Bit 5:
0
Allow VBI data with errors in the FIFO
1
Do not allow VBI data with errors in the FIFO (default)
Bit 4:
0
Do not enable error detection and correction
1
Enable error detection and correction (when bits [3:0] = 1 2, 3, and 4 only) (default)
Bits [3:0]:
0000
WST SECAM
0001
WST PAL B
0010
WST PAL C
0011
WST NTSC
0100
NABTS NTSC
0101
TTX NTSC
0110
CC PAL
0111
CC NTSC
1000
WSS/CGMS-A PAL
1001
WSS/CGMS NTSC
1010
VITC PAL
1011
VITC NTSC
1100
VPS PAL
1101
Gemstar 2x Custom 1
1110
Custom 2
1111
Active video (VDP off) (default)
A value of FFh in the line mode registers is required for any line to be sliced as part of the full field mode.
VDP Full-Field Enable
Address
FCh
Default (7Fh)
7
6
5
4
3
2
1
0
Full field mode [7:0]
Full field mode [7:0]: This register programs the specific VBI standard for full-field mode. It can be any VBI standard. Individual line settings
take priority over the full-field register. This allows each VBI line to be programmed independently but have the remaining lines in full-field
mode. The full-field mode register has the same bits definition as line-mode registers. (default 7Fh)
19
SLEA104 – July 2010
TVP5154A VBI Quick Start
Copyright © 2010, Texas Instruments Incorporated
