Datasheet

Data Sheet ADV7390/ADV7391/ADV7392/ADV7393
Rev. J | Page 77 of 107
SD WIDE SCREEN SIGNALING
Subaddress 0x99, Subaddress 0x9A, Subaddress 0x9B
The ADV7390/ADV7391/ADV7392/ADV7393 support wide
screen signaling (WSS) con-forming to the ETSI 300 294
standard. WSS data is transmitted on Line 23. WSS data can be
transmitted only when the device is configured in PAL mode.
The WSS data is 14 bits long. The function of each of these bits
is shown in Table 59. The WSS data is preceded by a run-in
sequence and a start code (see Figure 102). The latter portion of
Line 23 (after 42.5 µs from the falling edge of
HSYNC
) is
available for the insertion of video. WSS data transmission on
Line 23 can be enabled using Subaddress 0x99, Bit 7. It is
possible to blank the WSS portion of Line 23 with Subaddress
0xA1, Bit 7.
Table 59. Function of WSS Bits
Bit Number
Bit Description 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Setting
Aspect Ratio, Format, Position 1 0 0 0 4:3, full format, N/A
0 0 0 1 14:9, letterbox, center
0 0 1 0 14:9, letterbox, top
1 0 1 1 16:9, letterbox, center
0 1 0 0 16:9, letterbox, top
1 1 0 1 >16:9, letterbox, center
1 1 1 0 14:9, full format, center
0 1 1 1 16:0, N/A, N/A
Mode 0 Camera mode
1
Film mode
Color Encoding 0 Normal PAL
1 Motion Adaptive ColorPlus
Helper Signals 0 Not present
1 Present
Reserved 0 N/A
Teletext Subtitles 0 No
1 Yes
Open Subtitles
0
0
No
0 1 Subtitles in active image area
1 0 Subtitles out of active image area
1 1 Reserved
Surround Sound 0 No
1 Yes
Copyright
0
No copyright asserted or unknown
1 Copyright asserted
Copy Protection 0 Copying not restricted
1 Copying restricted
ACTIVE
VIDEO
RUN-IN
SEQUENCE
START
CODE
500mV
11.0µs
38.4µ
s
42.5µs
W0
W1 W2 W3 W4 W5
W6 W7 W8 W9 W10 W
11 W12 W13
06234-100
Figure 102. WSS Waveform Diagram
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