ADV7180KCP32Z-RL Analog Devices Inc, ADV7180KCP32Z-RL Datasheet - Page 57

• Manufacturer Part Number: ADV7180KCP32Z-RL
• Description: 10-bit 4x Oversampling SDTV Decoder
• Manufacturer: Analog Devices Inc
• Type: Video Decoderr

Specifications of ADV7180KCP32Z-RL

• Design Resources: Low Cost Differential Video Receiver Using ADA4851 Amplifier and ADV7180 Video Decoder (CN0060) Low Cost Video Multiplexer for Video Switching Using ADA4853-2 Op Amp with Disable Function (CN0076)
• Applications: Digital Cameras, Mobile Phones, Portable Video
• Voltage - Supply, Analog: 1.71 V ~ 1.89 V
• Voltage - Supply, Digital: 1.65 V ~ 2 V
• Mounting Type: Surface Mount
• Package / Case: 32-LFCSP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 75. Ancillary Data in Byte Output Format
Byte
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
n − 3
n − 2
n − 1
1
Structure of VBI Words in the Ancillary Data Stream
Each VBI data standard has been split into a clock-run-in
(CRI), a framing code (FC), and a number of data bytes (n).
The data packet in the ancillary stream includes only the FC
and data bytes. Table 76 shows the format of VBI_WORD_x in
the ancillary data stream.
Table 76. Structure of VBI Data-Words in the Ancillary Stream
Ancillary Data Byte No.
VBI_WORD_1
VBI_WORD_2
VBI_WORD_3
VBI_WORD_4
…
VBI_WORD_N + 3
VDP Framing Code
The length of the actual framing code depends on the VBI data
standard. For uniformity, the length of the framing code reported
in the ancillary data stream is always 24 bits. For standards with
a smaller framing code length, the extra LSB bits are set to 0.
The valid length of the framing code can be decoded from the
VBI_DATA_STD bits available in ID0 (UDW 1). The framing
code is always reported in the inverse-transmission order.
Table 77 shows the framing code and its valid length for VBI
data standards supported by VDP.
This mode does not fully comply with ITU-R BT.1364.
B9
0
1
1
EP
EP
EP
EP
EP
EP
EP
1
1
B8
B8
0
1
1
EP
EP
EP
EP
EP
EP
EP
0
0
FC0
DBn
Byte Type
FC1
FC2
DB1
…
B7
0
1
1
0
0
0
EVEN_FIELD
0
0
0
Padding[1:0]
Description
Framing Code[23:16]
Framing Code[15:8]
Framing Code[7:0]
First data byte
…
Last (n
VBI_WORD_1[7:0]
VBI_WORD_2[7:0]
VBI_WORD_3[7:0]
VBI_WORD_4[7:0]
VBI_WORD_5[7:0]
B6
0
1
1
0
0
0
th
) data byte
1
Checksum
I
2
B5
0
1
1
0
0
0
C_SDID7_2[5:0]
LINE_NUMBER[4:0]
LINE_NUMBER[9:5]
Rev. F | Page 57 of 116
I
2
C_DID6_2[4:0]
B4
0
1
1
0
0
0
VBI_DATA_STD[3:0]
DC[4:0]
B3
0
1
1
VDP_TTXT_TYPE[1:0]
0
0
Example
For teletext (B-WST), the framing code byte is 11100100 (0xE4),
with bits shown in the order of transmission. VBI_WORD_1 =
0x27, VBI_WORD_2 = 0x00, and VBI_WORD_3 = 0x00
translated into UDWs in the ancillary data stream for nibble
mode are as follows:
For byte mode,
UDW5[5:2] = 0010
UDW6[5:2] = 0111
UDW7[5:2] = 0000 (undefined bits set to 0)
UDW8[5:2] = 0000 (undefined bits set to 0)
UDW9[5:2] = 0000 (undefined bits set to 0)
UDW10[5:2] = 0000 (undefined bits set to 0)
UDW5[9:2] = 0010_0111
UDW6[9:2] = 0000_0000 (undefined bits set to 0)
UDW7[9:2] = 0000_0000 (undefined bits set to 0)
B2
0
1
1
0
0
B1
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
B0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Ancillary data preamble
ID1 (User Data-Word 2)
ID2 (User Data-Word 3)
ID3 (User Data-Word 4)
ID4 (User Data-Word 5)
ID5 (User Data-Word 6)
ID6 (User Data-Word 7)
ID7 (User Data-Word 8)
ID8 (User Data-Word 9)
Pad 0x200; these
padding words may be
present, depending on
ancillary data type; user
data-word
CS (checksum word)
Description
DID
SDID
Data count
ID0 (User Data-Word 1)
ADV7180