參數(shù)資料
型號(hào)： ADV7184BSTZ
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 51/112頁(yè)
文件大?。?/td> 0K
描述： IC DECODER VID SDTV MULTI 80LQFP
標(biāo)準(zhǔn)包裝： 1
類型： 視頻解碼器
應(yīng)用： 投影儀，錄音機(jī)，安全
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(yīng)商設(shè)備封裝： 80-LQFP（14x14）
包裝： 托盤
ADV7184
Rev. A | Page 43 of 112
Vertical Blank Control
Each vertical blank control register (Addresses 0xEB and 0xEC)
has the same meaning for the following bit settings:
00—Early by one line.
10—Delayed by one line.
11—Delayed by two lines.
01 (default)—Described in each register section.
NVBIOLCM [1:0], NTSC VBI Odd Field Luma Comb
Mode, Address 0xEB [7:6]
These bits control the first combed line after VBI on NTSC odd
field (luma comb).
01 (default)—SMPTE170-/ITU-R BT.470-compliant; blank
Lines 1 to 20, 264 to 282; comb half lines.
NVBIELCM [1:0], NTSC VBI Even Field Luma Comb
Mode, Address 0xEB [5:4]
These bits control the first combed line after VBI on NTSC
even field (luma comb).
01 (default)—SMPTE170-/ITU-R BT.470-compliant; blank
Lines 1 to 20, 264 to 282; comb half lines.
PVBIOLCM [1:0], PAL VBI Odd Field Luma Comb Mode,
Address 0xEB [3:2]
These bits control the first combed line after VBI on PAL odd
field (luma comb).
01 (default)—ITU-R BT.470-compliant; blank Lines 624 to 22,
311 to 335; comb half lines.
PVBIELCM [1:0], PAL VBI Even Field Luma Comb Mode,
Address 0xEB [1:0]
These bits control the first combed line after VBI on PAL even
field (luma comb).
01 (default)—ITU-R BT.470-compliant; blank Lines 624 to 22,
311 to 335; comb half lines.
NVBIOCCM [1:0], NTSC VBI Odd Field Chroma Comb
Mode, Address 0xEC [7:6]
These bits control the first combed line after VBI on NTSC odd
field (chroma comb).
01 (default)—SMPTE170-/ITU-R BT.470-compliant; no color
on Lines 1 to 20, 264 to 282; chroma present on half lines.
NVBIECCM [1:0], NTSC VBI Even Field Chroma Comb
Mode, Address 0xEC [5:4]
These bits control the first combed line after VBI on NTSC
even field (chroma comb).
01 (default)—SMPTE170-/ITU-R BT.470-compliant; no color
on Lines 1 to 20, 264 to 282; chroma present on half lines.
PVBIOCCM [1:0], PAL VBI Odd Field Chroma Comb
Mode, Address 0xEC [3:2]
These bits control the first combed line after VBI on PAL odd
field (chroma comb).
01 (default)—ITU-R BT.470-compliant; no color on Lines 624
to 22, 311 to 335; chroma present on half lines.
PVBIECCM [1:0], PAL VBI Even Field Chroma Comb
Mode, Address 0xEC [1:0]
These bits control the position of the first combed line after VBI
on PAL even field (chroma comb).
01 (default)—ITU-R BT.470-compliant; no color on Lines 624
to 22, 311 to 335; chroma present on half lines.
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 blanking interval (VBI)
The range of data values permitted in the output data stream
The relative delay of luma vs. chroma signals
Note that some of the decoded VBI data is inserted during the
horizontal blanking interval. See the Gemstar Data Recovery
section for more information.
BT656-4, ITU-R BT.656-4 Enable, Address 0x04 [7]
Revisions 3 and 4 of the ITU-R BT.656 standard have different
positions for toggling the V bit within the SAV EAV codes for
NTSC. The BT656-4 bit allows the user to select an output
mode that is compliant with either the previous or new standard.
For more information, visit the International Telecommunication
Union’s website.
Note that the standard change affects only NTSC and has no
bearing on PAL.
0 (default)—The ITU-R BT.656-3 specification is used. The
V bit goes low at EAV of Lines 10 and 273.
1—The ITU-R BT.656-4 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 may be necessary to
duplicate the AV codes from the luma path into the chroma path.
In an 8-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.
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