ADV7305AKST Analog Devices Inc, ADV7305AKST Datasheet - Page 53

• Manufacturer Part Number: ADV7305AKST
• Description: IC ENCODER VIDEO 14BIT 64LQFP
• Manufacturer: Analog Devices Inc
• Type: Video Encoderr

Specifications of ADV7305AKST

• Applications: DVD, SD/HD
• Voltage - Supply, Analog: 2.5V
• Voltage - Supply, Digital: 2.5V
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• Number Of Dac's: 6
• Adc/dac Resolution: 14b
• Screening Level: Commercial
• Package Type: LQFP
• Pin Count: 64
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Appendix B
SD WIDE SCREEN SIGNALLING
[Subaddresses 59h, 5Ah, and 5Bh]
The ADV7304A/ADV7305A supports Wide Screen Signalling
(WSS) conforming to the standard. WSS data is transmitted on
Line 23. WSS data can only be transmitted when the ADV7304A/
ADV7305A is configured in PAL Mode. The WSS data is 14 bits
long. The function of each of these bits is shown in Table XXVI.
The WSS data is preceded by a run-in sequence and a start code
(see Figure 82). If SD WSS [Address 59h, Bit 7] is set to a Logic
“1,” it enables the WSS data to be transmitted on Line 23. The
latter portion of Line 23 (42.5 µs from the falling edge of HSYNC)
is available for the insertion of video.
It is possible to blank the WSS portion of Line 23 with
Subaddress 61h, Bit 7.
Bit
0
1
2
3
4
5
6
7
8
9–10
11
12–13
REV. A
500mV
Function
Aspect Ratio
Format
Position
Odd Parity Check of Bits 0–2
0 = Camera Mode
1 = Film Mode
0 = Standard Coding
1 = Motion Adaptive Color Plus
0 = No Helper
1 = Modulated Helper
Reserved
Reserved
00 = No Open Subtitles
10 = Subtitles Inside Active Image Area
01 = Subtitles Outside Active Image Area
11 = Reserved
0 = No Surround Sound Information
1 = Surround Sound Mode
Reserved
Table XXVI. Function of WSS Bits
11.0 s
SEQUENCE
RUN-IN
START
CODE
38.4 s
42.5 s
W0 W1 W2 W3 W4 W5 W6 W7 W8 W9 W10 W11 W12 W13
Figure 82. WSS Waveform
–53–
B0 B1 B2 B3
0
1
0
1
0
1
0
1
0
0
1
1
0
0
1
1
0
0
0
0
1
1
1
1
Table XXVII. Function of WSS Bits 0–3
1
0
0
1
0
1
1
0
Aspect Ratio
4:3
14:9
14:9
16:9
16:9
>16:9
14:9
16:9
ADV7304A/ADV7305A
Format
Full Format
Letterbox
Letterbox
Letterbox
Letterbox
Letterbox
Full Format
N/A
ACTIVE
VIDEO
Position
N/A
Center
Top
Center
Top
Center
N/A
Center