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參數(shù)資料
| 型號： | TVP5145 |
| 英文描述： | NTSC/PAL/SECAM/Component Digital Video Decoder With Macrovision(TM) Detection |
| 中文描述： | 的NTSC / PAL / SECAM制式/分量數(shù)字視頻解碼器通過Macrovision（TM）的檢測 |
| 文件頁數(shù)： | 68/92頁 |
| 文件大?。?/td> | 525K |
| 代理商： | TVP5145 |
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2
–
52
2.12.49Teletext Filter and Mask Registers
Address
B1h
–
BAh
ADDRESS
B1h
B2h
B3h
B4h
B5h
B6h
B7h
B8h
B9h
BAh
7
6
5
4
3
2
Filter 1 Pattern 1
Filter 1 Pattern 2
Filter 1 Pattern 3
Filter 1 Pattern 4
Filter 1 Pattern 5
Filter 2 Pattern 1
Filter 2 Pattern 2
Filter 2 Pattern 3
Filter 2 Pattern 4
Filter 2 Pattern 5
1
0
Filter 1 Mask 1
Filter 1 Mask 2
Filter 1 Mask 3
Filter 1 Mask 4
Filter 1 Mask 5
Filter 2 Mask 1
Filter 2 Mask 2
Filter 2 Mask 3
Filter 2 Mask 4
Filter 2 Mask 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 data portion D[3:0] from each byte is applied to a teletext filter function with corresponding pattern bits P[3:0]
and mask bits M[3:0]. Hamming protection bits are ignored by the filter.
For WST system (PAL or NTSC), the packet prefix consists of two bytes. The two bytes contain three bits of magazine
number (M[2:0]) and five bits of row address (R[4:0]), interlaced with eight Hamming protection bits H[7:0]:
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
R[0]
H[3]
M[2]
H[2]
M[1]
H[1]
M[0]
H[0]
R[4]
H[7]
R[3]
H[6]
R[2]
H[5]
R[1]
H[4]
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, 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, the filter matches all patterns returning a
true result (default 00h).
Figure 2
–
32 shows the filter functions using data D[3:0], pattern P[3:0], and mask M[3:0].
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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TVP5145EVM | 制造商:Texas Instruments 功能描述:TVP5145EVM - Bulk |
| TVP5145PFP | 功能描述:視頻 IC NTSC/PAL/SECAM/ Comp Dig Vid Dec RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| TVP5146 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:NTSC/PAL / SECAM 4 X 10 BIT DIGITAL VIDEO DECODER WITH MACROVISION DETECTION YPBPR/RGB INPUTS 5 LINE COMB FILTER AND SCART SUPPORT |
| TVP5146_12 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:NTSC/PAL/SECAM 4x10-Bit Digital Video Decoder With Macrovision?￡a Detection, YPbPr/RGB Inputs, 5-Line Comb Filter, and SCART Support |
| TVP5146EVM | 功能描述:視頻 IC 開發(fā)工具 TVP5146 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Boards 類型:YPbPr to RGBHV Converters 工具用于評估:LMH1251 工作電源電壓:5 V |
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