参数资料
型号: TVP5150PBSR
厂商: TEXAS INSTRUMENTS INC
元件分类: 颜色信号转换
英文描述: COLOR SIGNAL DECODER, PQFP32
封装: GREEN, PLASTIC, TQFP-32
文件页数: 17/68页
文件大小: 917K
代理商: TVP5150PBSR
Functional Description
18
May 2006
SLES043A
HSYNC
AVID Start
AVID Stop
VBLK
Stop
VBLK
Start
VSYNC
AVID Cropped
Area
Active Video Area
Figure 311. AVID Application
3.17 Embedded Syncs
Standards with embedded syncs insert SAV and EAV codes into the datastream on the rising and falling edges
of AVID. These codes contain the V and F bits which also define vertical timing. F and V are software
programmable and change after SAV but before EAV, so that the new value always appears on EAV first.
Table 34 gives the format of the SAV and EAV codes.
H equals 1 always indicates EAV. H equals 0 always indicates SAV. The alignment of V and F to the line and
field counter varies depending on the standard.
The P bits are protection bits:
P3 = V xor H
P2 = F xor H
P1 = F xor V
P0 = F xor V xor H
Table 34. EAV and SAV Sequence
8-BIT DATA
D7 (MSB)
D6
D5
D4
D3
D2
D1
D0
Preamble
1
Preamble
0
Preamble
0
Status word
1
F
V
H
P3
P2
P1
P0
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