參數(shù)資料
型號: TVP5020TQFP
廠商: Texas Instruments, Inc.
英文描述: NTSC/PAL VIDEO DECODER
中文描述: NTSC / PAL視頻解碼器
文件頁數(shù): 47/87頁
文件大?。?/td> 387K
代理商: TVP5020TQFP
2–33
Table 2–9. Teletext Byte Order (Continued)
BYTE
NUMBER
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
NABTS – 525 OR 625
LINE SYSTEM
Data block 6
Data block 7
Data block 8
Data block 9
Data block 10
Data block 11
Data block 12
Data block 13
Data block 14
Data block 15
Data block 16
Data block 17
Data block 18
Data block 19
Data block 20
Data block 21
Data block 22
Data block 23
Data block 24
Data block 25
Data block 26
Data block 27/suffix
Data block 28/suffix
Padding byte
WST – 525 LINE SYSTEM
WST – 625 LINE SYSTEM
Data byte 9
Data byte 10
Data byte 11
Data byte 12
Data byte 13
Data byte 14
Data byte 15
Data byte 16
Data byte 17
Data byte 18
Data byte 19
Data byte 20
Data byte 21
Data byte 22
Data byte 23
Data byte 24
Data byte 25
Data byte 26
Data byte 27
Data byte 28
Data byte 29
Data byte 30
Data byte 31
Data byte 32
Data byte 9
Data byte 10
Data byte 11
Data byte 12
Data byte 13
Data byte 14
Data byte 15
Data byte 16
Data byte 17
Data byte 18
Data byte 19
Data byte 20
Data byte 21
Data byte 22
Data byte 23
Data byte 24
Data byte 25
Data byte 26
Data byte 27
Data byte 28
Data byte 29
Data byte 30
Data byte 31
Data byte 32
Data byte 33
Data byte 34
Data byte 35
Data byte 36
Data byte 37
Data byte 38
Data byte 39
Data byte 40
The padding byte is used to ensure an even number of writes. This byte does not contain any useful information. The
read pointer automatically advances past this byte so the user does not have to read the padding byte.
2.13.2
Teletext as Ancillary Data in Video Stream
Sliced teletext data can be output as ancillary data in the video stream in ITU-R BT.656 mode. Teletext data
is output on the Y7:0 pins during the horizontal blanking period following the line that the data was retrieved.
Dummy ancillary data blocks with special timing header information are inserted during certain horizontal
blanking periods to provide data synchronization information. Tables 2–10 through 2–13 show the format
and sequence of the ancillary data inserted into the video stream.
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