Ancillary Data Extraction; Figure 44: Vbi Data Extraction Block Diagram; Table 13: Output Mode Outline - Analog Devices ADV8003 Hardware Manual

sclk
External
ss
SPI
SPI
mosi
Slave
Master
hdmi_rx_clk
vid_rx_clk
y_data_in[11:4]

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
Byte B9
0 0
1 1
2 1
3 EP
4 EP
5 EP
6 EP
7 EP
8 EP
9 EP
10 EP
11 EP
12 EP
13 EP
1
N-1 B8
Rev. B, August 2013
spi_rx_dv
Sync
1'b1
1
spi_rx_dv[7:0]
0

Figure 44: VBI Data Extraction Block Diagram

Table
B8 B7 B6 B5
0 0 0 0
1 1 1 1
1 1 1 1
EP
I2C_DID6[4:0]
EP
I2C_SDID7_2[5:0]
EP 0
EP Padding[1:0] VBI_DATA_STD[3:0]
EP
LCOUNT[11:6]
EP
LCOUNT[5:0]
EP 0 0 0
EP 0 0
VBI_WORD_1[7:4]
EP 0 0
VBI_WORD_1[3:0]
EP 0 0
VBI_WORD_2[7:4]
EP 0 0
VBI_WORD_2[3:0]
0 0 0 0
Checksum
vbi_src (1 = SPI, 0 = ANC)
1
0
Ancillary
Data
Extractor
1
muxed_vid_in
0
13.

Table 13: Output Mode Outline

B4 B3 B2 B1
0 0 0 0
1 1 1 1
1 1 1 1
0
0
0
DC[4:0]
0
0
0
EF VDP_TTXT 0
TYPE[1:0]
0
0
0
0
0 0 0 0
0
120
ccap_even_data
ccap_even_dv
ccap_odd_data
Ancillary
Data
ccap_odd_dv
Delay
cgms_wss_data
cgms_wss_dv
B0 Description
0
1
Ancillary Data Preamble
1
0 DID Data Identification Word
0 SDID Secondary Data Identification
Word
0 ID1 User Data Word 1
0 ID2 User Data Word 2
0 ID3 User Data Word 3
0 ID4 User Data Word 4
0 ID5 User Data Word 5
0 ID6 User Data Word 6
0 ID7 User Data Word 7
0 ID8 User Data Word 8
0 ID9 User Data Word 9
0 Pad, May or may not be present
0
ADV8003 Hardware Manual
ccap_out
ccap_ext_out
To Encoder
cgms_wss_out_sd
cgms_wss_out_hd