參數(shù)資料
型號: EVAL-ADV739XFEZ
廠商: Analog Devices Inc
文件頁數(shù): 55/108頁
文件大?。?/td> 0K
描述: BOARD EVAL FOR ADV739XFEZ
標(biāo)準(zhǔn)包裝: 1
系列: Advantiv®
主要目的: 視頻,視頻處理
嵌入式:
已用 IC / 零件: ADV7403
主要屬性: NTSC/PAL 數(shù)字視頻解碼器
次要屬性: 前端板,用于 ADV7390、ADV7391、ADV7392 和 ADV7393 編碼器背端板
已供物品:
ADV7390/ADV7391/ADV7392/ADV7393
Data Sheet
Rev. G | Page 50 of 108
DESIGN FEATURES
OUTPUT OVERSAMPLING
The ADV739x includes an on-chip phase-locked loop (PLL)
that allows for oversampling of SD, ED, and HD video data. By
default, the PLL is disabled. The PLL can be enabled using
Subaddress 0x00, Bit 1 = 0.
Table 40 shows the various oversampling rates supported in the
ADV739x.
External Sync Polarity
For SD and ED/HD modes, the ADV739x parts typically expect
HS and VS to be low during their respective blanking periods.
However, when the CEA861 compliance bit is enabled (0x39,
Bit 5 for ED/HD modes and 0x86, Bit 3 for SD modes), the part
expects the HS or VS to be active low or high depending on the
input format selected (0x30, Bits[7:3]).
If a different polarity other than the default is required for
ED/HD modes, 0x3A, Bits[2:0] can be used to invert PHSYNCB,
PVSYNCB or PBLANKB individually regardless of whether
CEA-861-B mode is enabled. It is not possible to invert
S_HSYNC or S_VSYNC.
Table 40. Output Oversampling Modes and Rates
Input Mode
(0x01, Bits[6:4])
PLL and Oversampling
Control (0x00, Bit 1)
SD/ED Oversample Rate
Select (0x0D, Bit 3)1
HD Oversample Rate
Select (0x31, Bit 1)1
Oversampling Mode
and Rate
000
SD
1
X
SD (2×)
000
SD
0
1
X
SD (8×)
000
SD
0
X
SD (16×)
001/010
ED
1
X
ED (1×)
001/010
ED
0
1
X
ED (4×)
001/010
ED
0
X
ED (8×)
001/010
HD
1
X
HD (1×)
001/010
HD
0
X
1
HD (2×)
001/010
HD
0
X
0
HD (4×)
111
ED (at 54 MHz)
1
X
ED (at 54 MHz) (1×)
111
ED (at 54 MHz)
0
1
X
ED (at 54 MHz) (4×)
111
ED (at 54 MHz)
0
X
ED (at 54 MHz) (8×)
1
X = don’t care
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