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參數(shù)資料
| 型號： | ADV7189BKSTZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 37/104頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DECODER VIDEO W/ADC 80LQFP |
| 標準包裝： | 1 |
| 類型： | 視頻解碼器 |
| 應用： | 機頂盒，視頻播放器，錄音機 |
| 電壓 - 電源，模擬： | 3.15 V ~ 3.45 V |
| 電壓 - 電源，數(shù)字： | 1.65 V ~ 2 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 80-LQFP |
| 供應商設備封裝： | 80-LQFP（14x14） |
| 包裝： | 托盤 |
| 產(chǎn)品目錄頁面： | 788 (CN2011-ZH PDF) |
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ADV7189B
Rev. B | Page 38 of 104
AV CODE INSERTION AND CONTROLS
This section describes the I2C-based controls that affect:
Insertion of AV codes into the data stream.
Data blanking during the vertical blank interval (VBI).
The range of data values permitted in the output data
stream.
The relative delay of luma vs. chroma signals.
Note: Some of the decoded VBI data is being inserted dur-
ing the horizontal blanking interval. See the
197H
Gemstar Data
Recovery section for more information.
BT656-4 ITU Standard BT-R.656-4 Enable, Address
0x04[7]
The ITU has changed the position for toggling of the V bit
within the SAV EAV codes for NTSC between Revisions 3 and
Revision 4. The BT656-4 standard bit allows the user to select
an output mode that is compliant with either the previous or the
new standard. For further information, review the standard at
www.itu.int.
Note the standard change affects NTSC only, and has no
bearing on PAL.
When BT656-4 is 0 (default), the BT656-3 specification is used.
The V bit goes low at EAV of Lines 10 and 273.
When BT656-4 is 1, the BT656-4 specification is used.
The V bit goes low at EAV of Lines 20 and 283.
SD_DUP_AV Duplicate AV Codes, Address 0x03[0]
Depending on the output interface width, it can be necessary to
duplicate the AV codes from the luma path into the chroma path.
In an 8-/10-bit-wide output interface (Cb/Y/Cr/Y interleaved
data), the AV codes are defined as FF/00/00/AV, with AV being
the transmitted word that contains information about H/V/F.
In this output interface mode, the following assignment takes
place: Cb = FF, Y = 00, Cr = 00, and Y = AV.
In a 16-/20-bit output interface where Y and Cr/Cb are delivered
via separate data buses, the AV code is over the whole
16/20 bits. The SD_DUP_AV bit allows the user to replicate the
AV codes on both busses, so the full AV sequence can be found
on the Y bus as well as on the Cr/Cb bus. See
198H
Figure 19.
When SD_DUP_AV is 0 (default), the AV codes are in single
fashion (to suit 8-/10-bit interleaved data output).
When SD_DUP_AV is 1, the AV codes are duplicated (for
16-/20-bit interfaces).
VBI_EN Vertical Blanking Interval Data Enable,
Address 0x03[7]
The VBI enable bit allows data such as intercast and closed-
caption data to be passed through the luma channel of the
decoder with a minimal amount of filtering. All data for Line 1
to Line 21 is passed through and available at the output port.
The ADV7189B does not blank the luma data, and automatically
switches all filters along the luma data path into their widest
bandwidth. For active video, the filter settings for YSH and YPK
are restored.
Refer to the BL_C_VBI Blank Chroma during VBI section for
information on the chroma path.
When VBI_EN is 0 (default), all video lines are filtered/scaled.
When VBI_EN is 1, only the active video region is filtered/scaled.
04983-0-019
Y DATA BUS
00
AV
Y
FF
00
AV
Y
FF
Cr/Cb DATA BUS
00
AV
Cb
FF
00
Cb
AV CODE SECTION
FF
00
AV
Cb
AV CODE SECTION
Cb/Y/Cr/Y
INTERLEAVED
8-/10-BIT INTERFACE
16-/20-BIT INTERFACE
SD_DUP_AV = 1
SD_DUP_AV = 0
Figure 19. AV Code Duplication Control
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ADV7189BKSTZ10F | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat SDTV Video Decoder |
| ADV7189BKSTZ10F2 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat SDTV Video Decoder |
| ADV7189BST | 制造商:Analog Devices 功能描述: |
| ADV7189KST | 制造商:Rochester Electronics LLC 功能描述:12BIT NTSC/PAL/SECAMVIDDECOD I.C. - Tape and Reel 制造商:Analog Devices 功能描述:IC VIDEO ENCODER |
| ADV7189XST | 制造商:Analog Devices 功能描述:54MHZ NTSC/PAL ENCODER(DNR+MACROVISON)IC - Bulk |
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