參數(shù)資料
型號: TMC22091KHC
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 顏色信號轉換
英文描述: Digital Video Encoders/Layering Engine
中文描述: COLOR SIGNAL ENCODER, PQFP100
封裝: 3.20 MM HEIGHT, MQFP-100
文件頁數(shù): 44/60頁
文件大小: 293K
代理商: TMC22091KHC
TMC22091/TMC22191
PRODUCT SPECIFICATION
44
Genlock Interface
The TMC22x91 can process digital composite video
connected to its CVBS port. It has been designed to couple
tightly with the companion TMC22071 Genlocking Video
Digitizer, but it will work with other sources as well.
The digital composite video has to be in standard 8-bit
binary format at a PXCK/2 rate. Synchronization with the
internal PXCK/2 is established by the phasing of the
GHSYNC input, as shown in Figures 24 and 25.
Subcarrier frequency and phase data are transmitted to the
encoder over the CVBS bus as 4-bit nibbles on CVBS
3-0
during the horizontal sync period. Field identification is also
required for the TMC22x91 internal sync generator. The
14th nibble of the sequence contains no relevant data.
Figure 23. Data Keying
Figure 24. Genlock Interface Timing
PXCK
24360A
PD
COMPOSITE
OUTPUT
CVBS
0
1
2
3
4
5
6
7
8
9
38
39
40
41
42
43
44
45
46
47
48
49
VN+2
VN+3
VN+4
VN+5
VN+6
VN+28
VN+29
VN+30
VN+27
VN+26
VN+25
PN
PN+1
PN+2
PN+3
KEY MIDPOINT
FIRST KEY WORD
P
P
P
P
P
P
P
P
V
PN+4
PN+26
PN+27
PN+28
PN+25
PN+24
PN+23
2N+1
PXCK
GHSYNC
CVBS7-0
24341A
tSGI
tHGI
tSGI
tHGI
2N+2
2N+3
相關PDF資料
PDF描述
TMC22191KHC Digital Video Encoders/Layering Engine
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