參數(shù)資料
型號： EVAL-ADV7180LQEBZ
廠商： Analog Devices Inc
文件頁數(shù)： 83/116頁
文件大?。?/td> 0K
描述： BOARD EVALUATION ADV7180
標準包裝： 1
系列： Advantiv®
主要目的： 視頻，SDTV 視頻解碼器 - NTSC，PAL，SECAM
嵌入式： 否
已用 IC / 零件： ADV7180
主要屬性： CVBS（復(fù)合），Y/C（S 視頻）和 YPrPb（元件）輸入
次要屬性： 8 位 ITU-R BT.656 YCrCb 4:2:2 輸出
已供物品： 板
相關(guān)產(chǎn)品： ADV7180BCPZ-REEL-ND - IC VIDEO DECODER SDTV 40-LFCSP
ADV7180BSTZ-ND - IC VIDEO DECODER SDTV 64-LQFP
ADV7180BCPZ-ND - IC VIDEO DECODER SDTV 40-LFCSP
Data Sheet
ADV7180
Rev. I | Page 69 of 116
Each data packet starts immediately after the EAV code of the
preceding line. Figure 52 and Table 86 show the overall structure
of the data packet.
Entries within the packet are as follows:
Fixed preamble sequence of 0x00, 0xFF, and 0xFF.
DID. The value for the DID marking a Gemstar or CCAP
data packet is 0x140 (10-bit value).
SDID, which contains information about the video line
from which data was retrieved, whether the Gemstar
transmission was in 1× or 2× format, and whether it was
retrieved from an even or odd field.
Data count byte, giving the number of user data-words that
follow.
User data section.
Optional padding to ensure that the length of the user
data-word section of a packet is a multiple of four bytes
(requirement as set in ITU-R BT.1364).
Checksum byte.
Table 86 lists the values within a generic data packet that is
output by the ADV7180 in 8-bit format.
05700-
043
00
FF
DID
SDID
DATA
COUNT
USER DATA
OPTIONAL PADDING
BYTES
CHECK
SUM
SECONDARY DATA IDENTIFICATION
PREAMBLE FOR ANCILLARY DATA
DATA IDENTIFICATION
USER DATA (4 OR 8 WORDS)
Figure 52. Gemstar- and CCAP-Embedded Data Packet (Generic)
Table 86. Generic Data Output Packet
Byte
D[9]
D[8]
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
Description
0
Fixed preamble
1
Fixed preamble
2
1
Fixed preamble
3
0
1
0
1
0
DID
4
EP
EF
2X
Line[3:0]
0
SDID
5
EP
0
DC[1]
DC[0]
0
Data count (DC)
6
EP
0
Word1[7:4]
0
User data-words
7
EP
0
Word1[3:0]
0
User data-words
8
EP
0
Word2[7:4]
0
User data-words
9
EP
0
Word2[3:0]
0
User data-words
10
EP
0
Word3[7:4]
0
User data-words
11
EP
0
Word3[3:0]
0
User data-words
12
EP
0
Word4[7:4]
0
User data-words
13
EP
0
Word4[3:0]
0
User data-words
14
CS[8]
CS[7]
CS[6]
CS[5]
CS[4]
CS[3]
CS[2]
0
Checksum
Table 87. Data Byte Allocation
2×
Raw Information Bytes Retrieved from the Video Line
GDECAD
User Data-Words
(Including Padding)
Padding Bytes
DC[1:0]
1
4
0
8
0
10
1
4
1
4
0
01
0
2
0
4
0
01
0
2
1
4
2
01
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