ADV8003 Hardware Manual
Rev. B, August 2013
120
Ancillary
Data
Extractor
External
SPI
Master
1
0
sclk
SPI
Slave
Sync
1
0
Ancillary
Data
Delay
To Encoder
ss
mosi
spi_rx_dv
1’b1
y_data_in[11:4]
vbi_src (1 = SPI, 0 = ANC)
muxed_vid_in
spi_rx_dv[7:0]
ccap_even_data
ccap_even_dv
ccap_odd_data
ccap_odd_dv
cgms_wss_data
cgms_wss_dv
ccap_out
ccap_ext_out
cgms_wss_out_sd
cgms_wss_out_hd
c
lk
_
o
u
t_
s
d
c
lk
_
o
u
t_
h
d
1
0
hdmi_rx_clk
vid_rx_clk
Figure 44: VBI Data Extraction Block Diagram
2.2.8.2.
Ancillary Data Extraction
The ancillary data which is encoded in either nibble mode or byte mode is extracted from the input data stream on the Y channel and the
VBI data is retrieved. The DID and SDID from the sending device must match the value programmed in 1A 1A4A[7:0] and 1A 1A4B[7:0].
The format of the ancillary data packet is shown in
Table 13: Output Mode Outline
Byte B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
Description
0
0
0
0
0
0
0
0
0
0
0
Ancillary Data Preamble
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
3
EP
EP
I2C_DID6[4:0]
0
0
DID Data Identification Word
4
EP
EP
I2C_SDID7_2[5:0]
0
0
SDID Secondary Data Identification
Word
5
EP
EP
0
DC[4:0]
0
0
ID1 User Data Word 1
6
EP
EP
Padding[1:0] VBI_DATA_STD[3:0]
0
0
ID2 User Data Word 2
7
EP
EP
LCOUNT[11:6]
0
0
ID3 User Data Word 3
8
EP
EP
LCOUNT[5:0]
0
0
ID4 User Data Word 4
9
EP
EP
0
0
0
EF
VDP_TTXT
TYPE[1:0]
0
0
ID5 User Data Word 5
10
EP
EP
0
0
VBI_WORD_1[7:4]
0
0
ID6 User Data Word 6
11
EP
EP
0
0
VBI_WORD_1[3:0]
0
0
ID7 User Data Word 7
12
EP
EP
0
0
VBI_WORD_2[7:4]
0
0
ID8 User Data Word 8
13
EP
EP
0
0
VBI_WORD_2[3:0]
0
0
ID9 User Data Word 9
1
0
0
0
0
0
0
0
0
0
Pad, May or may not be present
N-1
B8
Checksum
0
0
Summary of Contents for ADV8003
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