adv7342 Analog Devices, Inc., adv7342 Datasheet - Page 72

• Manufacturer Part Number: adv7342
• Description: Multiformat Video Encoder Six, 11-bit, 297 Mhz Dacs
• Manufacturer: Analog Devices, Inc.

ADV7342/ADV7343
APPENDIX 2—SD WIDE SCREEN SIGNALING
Subaddress 0x99, Subaddress 0x9A, Subaddress 0x9B
The ADV7342/ADV7343 support wide screen signaling (WSS)
conforming 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 55.
The WSS data is preceded by a run-in sequence and a start code
Table 55. Function of WSS
Bit Description
Aspect Ratio, Format, Position
Mode
Color Encoding
Helper Signals
Reserved
Teletext Subtitles
Open Subtitles
Surround Sound
Copyright
Copy Protection
500mV
11.0µs
SEQUENCE
RUN-IN
13
0
1
START
12
0
1
CODE
11
0
1
38.4µs
42.5µs
W0
10
0
0
1
1
W1
Figure 98. WSS Waveform Diagram
W2
9
0
1
0
1
Bit Number
Rev. 0 | Page 72 of 88
W3
8
0
1
W4
7
0
W5
6
0
1
W6
(see Figure 98). 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.
5
0
1
W7
4
0
1
W8
3
1
0
0
1
0
1
1
0
W9 W10 W11 W12 W13
2
0
0
0
0
1
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
Setting
4:3, full format, N/A
14:9, letterbox, center
14:9, letterbox, top
16:9, letterbox, center
16:9, letterbox, top
>16:9, letterbox, center
14:9, full format, center
16:0, N/A, N/A
Camera mode
Film mode
Normal PAL
Motion Adaptive ColorPlus
Not present
Present
No
Yes
No
Subtitles in active image area
Subtitles out of active image area
Reserved
No
Yes
No copyright asserted or unknown
Copyright asserted
Copying not restricted
Copying restricted
ACTIVE
VIDEO