參數(shù)資料
型號： ADV7180BSTZ
廠商： Analog Devices Inc
文件頁數(shù)： 49/116頁
文件大小： 0K
描述： IC VIDEO DECODER SDTV 64-LQFP
產(chǎn)品變化通告： ADV7180 Metal Mask Edit 22/Oct/2009
設(shè)計(jì)資源： Low Cost Differential Video Receiver Using ADA4851 Amplifier and ADV7180 Video Decoder (CN0060)
Low Cost Video Multiplexer for Video Switching Using ADA4853-2 Op Amp with Disable Function (CN0076)
標(biāo)準(zhǔn)包裝： 1
類型： 視頻解碼器
應(yīng)用： 數(shù)碼相機(jī)，手機(jī)，便攜式視頻
安裝類型： 表面貼裝
封裝/外殼： 64-LQFP
供應(yīng)商設(shè)備封裝： 64-LQFP（10x10）
包裝： 托盤
產(chǎn)品目錄頁面： 788 (CN2011-ZH PDF)
配用： EVAL-ADV7180LQEBZ-ND - BOARD EVALUATION ADV7180
EVAL-ADV7180LFEBZ-ND - BOARD EVAL FOR ADV7180 LFCSP
ADV7180
Data Sheet
Rev. I | Page 38 of 116
BETACAM, Enable Betacam Levels, Address 0x01[5]
If YPrPb data is routed through the ADV7180, the automatic
gain control modes can target different video input levels, as
outlined in Table 44. The BETACAM bit is valid only if the
input mode is YPrPb (component). The BETACAM bit sets the
target value for AGC operation.
A review of the following sections is useful:
Address 0xC4[7] section for how component video
(YPrPb) can be routed through the ADV7180.
The Video Standard Selection section to select the various
standards, for example, with and without pedestal.
The AGC algorithms adjust the levels based on the setting of
the BETACAM bit (see Table 42).
PW_UPD, Peak White Update, Address 0x2B[0]
The peak white and average video algorithms determine the
gain based on measurements taken from the active video. The
PW_UPD bit determines the rate of gain change. LAGC[2:0]
must be set to the appropriate mode to enable the peak white or
average video mode in the first place. For more information, see the
section.
Setting PW_UPD to 0 updates the gain once per video line.
Setting PW_UPD to 1 (default) updates the gain once per field.
Chroma Gain
CAGC[1:0], Chroma Automatic Gain Control,
Address 0x2C[1:0]
The two bits of color automatic gain control mode select the
basic mode of operation for automatic gain control in the
chroma path.
Table 42. BETACAM Function
BETACAM
Description
0 (default)
Assuming YPrPb is selected as input format:
Selecting PAL with pedestal selects MII.
Selecting PAL without pedestal selects SMPTE.
Selecting NTSC with pedestal selects MII.
Selecting NTSC without pedestal selects SMPTE.
1
Assuming YPrPb is selected as input format:
Selecting PAL with pedestal selects BETACAM.
Selecting PAL without pedestal selects BETACAM variant.
Selecting NTSC with pedestal selects BETACAM.
Selecting NTSC without pedestal selects BETACAM variant.
Table 43. CAGC Function
CAGC[1:0]
Description
00
Manual fixed gain (use CMG[11:0])
01
Luma gain used for chroma
10 (default)
Automatic gain (based on color burst)
11
Freeze chroma gain
Table 44. BETACAM Levels
Name
BETACAM (mV)
BETACAM Variant (mV)
SMPTE (mV)
MII (mV)
Y
0 to +714 (including 7.5% pedestal)
0 to +714
0 to +700
0 to +700 (including 7.5% pedestal)
Pb and Pr
467 to +467
505 to +505
350 to +350
324 to +324
Sync Depth
+286
+300
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參數(shù)描述
ADV7180BSTZ 制造商:Analog Devices 功能描述:Video IC
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