參數資料
型號: TVP5150APBS
廠商: Texas Instruments
文件頁數: 49/74頁
文件大?。?/td> 0K
描述: IC NTSC/PAL/SECAM DECODER 32TQFP
產品培訓模塊: Data Converter Basics
標準包裝: 250
類型: 視頻解碼器
應用: 移動電話,PDA,播放器
電壓 - 電源,模擬: 1.8V
電壓 - 電源,數字: 1.8V,3.3V
安裝類型: 表面貼裝
封裝/外殼: 32-TQFP
供應商設備封裝: 32-TQFP(5x5)
包裝: 托盤
產品目錄頁面: 887 (CN2011-ZH PDF)
配用: TVP5150AEVM-ND - TVP5150AEVM
296-23058-ND - EVAL MODULE FOR DM642
TMDSDMK642-ND - DEVELOPER KIT W/NTSC CAMERA
其它名稱: 296-16650
243
2.20.53 Teletext Filter and Mask Registers
Address
B1h–BAh
Default
00h
ADDRESS
7
6
5
4
3
2
1
0
B1h
Filter 1 mask 1
Filter 1 pattern 1
B2h
Filter 1 mask 2
Filter 1 pattern 2
B3h
Filter 1 mask 3
Filter 1 pattern 3
B4h
Filter 1 mask 4
Filter 1 pattern 4
B5h
Filter 1 mask 5
Filter 1 pattern 5
B6h
Filter 2 mask 1
Filter 2 pattern 1
B7h
Filter 2 mask 2
Filter 2 pattern 2
B8h
Filter 2 mask 3
Filter 2 pattern 3
B9h
Filter 2 mask 4
Filter 2 pattern 4
BAh
Filter 2 mask 5
Filter 2 pattern 5
For an NABTS system, the packet prefix consists of five bytes. Each byte contains four data bits (D[3:0]) interlaced
with four Hamming protection bits (H[3:0]):
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
D[3]
H[3]
D[2]
H[2]
D[1]
H[1]
D[0]
H[0]
Only the data portion D[3:0] from each byte is applied to a teletext filter function with the corresponding pattern bits
P[3:0] and mask bits M[3:0]. Hamming protection bits are ignored by the filter.
For a WST system (PAL or NTSC), the packet prefix consists of two bytes so that two patterns are used. Patterns
3, 4, and 5 are ignored.
The mask bits enable filtering using the corresponding bit in the pattern register. For example, a 1 in the LSB of mask 1
means that the filter module must compare the LSB of nibble 1 in the pattern register to the first data bit on the
transaction. If these match, then a true result is returned. A 0 in a bit of mask 1 means that the filter module must ignore
that data bit of the transaction. If all 0s are programmed in the mask bits, then the filter matches all patterns returning
a true result (default 00h).
Pattern and mask for each byte and filter are referred as <1,2><P,M><1,2,3,4,5> where:
<1,2> identifies the filter 1 or 2
<P,M> identifies the pattern or mask
<1,2,3,4,5> identifies the byte number
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