EVAL-ADV7180LFEBZ Analog Devices Inc, EVAL-ADV7180LFEBZ Datasheet - Page 67

• Manufacturer Part Number: EVAL-ADV7180LFEBZ
• Description: BOARD EVAL FOR ADV7180 LFCSP
• Manufacturer: Analog Devices Inc

Specifications of EVAL-ADV7180LFEBZ

• Main Purpose: Video, SDTV Video Decoder - NTSC, PAL, SECAM
• Embedded: No
• Utilized Ic / Part: ADV7180
• Primary Attributes: CVBS (Composite), Y/C (S-video), and YPrPb (Component) Inputs
• Secondary Attributes: 8-bit ITU-R BT.656 YCrCb 4:2:2 Output
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Each data packet starts immediately after the EAV code of the
preceding line. Figure 50 and Table 86 show the overall structure
of the data packet.
Entries within the packet are as follows:
•
•
•
Table 86. Generic Data Output Packet
Byte
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Table 87. Data Byte Allocation
2×
1
1
0
0
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.
Raw Information Bytes Retrieved from the Video Line
4
4
2
2
D[9]
0
1
1
0
EP
EP
EP
EP
EP
EP
EP
EP
EP
EP
CS[8]
PREAMBLE FOR ANCILLARY DATA
D[8]
0
1
1
1
EP
EP
EP
EP
EP
EP
EP
EP
EP
EP
CS[8]
00
DATA IDENTIFICATION
FF
0
1
1
0
EF
0
0
0
0
0
0
0
0
0
CS[7]
D[7]
FF
DID
Figure 50. Gemstar- and CCAP-Embedded Data Packet (Generic)
D[6]
0
1
1
1
2X
0
0
0
0
0
0
0
0
0
CS[6]
SDID
SECONDARY DATA IDENTIFICATION
D[5]
0
1
1
0
0
CS[5]
COUNT
DATA
Rev. F | Page 67 of 116
D[4]
0
1
1
0
0
CS[4]
USER DATA (4 OR 8 WORDS)
Word1[7:4]
Word1[3:0]
Word2[7:4]
Word2[3:0]
Word3[7:4]
Word3[3:0]
Word4[7:4]
Word4[3:0]
Line[3:0]
USER DATA
GDECAD
0
1
0
1
•
•
•
•
Table 86 lists the values within a generic data packet that is
output by the ADV7180 in 8-bit format.
0
1
1
0
DC[1]
CS[3]
D[3]
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.
User Data-Words
(Including Padding)
8
4
4
4
D[2]
0
1
1
0
DC[0]
CS[2]
OPTIONAL PADDING
D[1]
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
BYTES
D[0]
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
Padding Bytes
0
0
0
2
CHECK
SUM
Checksum
Description
Fixed preamble
Fixed preamble
Fixed preamble
DID
SDID
Data count (DC)
User data-words
User data-words
User data-words
User data-words
User data-words
User data-words
User data-words
User data-words
ADV7180
DC[1:0]
10
01
01
01