Datasheet
ADV7342/ADV7343 Data Sheet
Rev. | Page 82 of 108
SD TIMING
Mode 0 (CCIR-656)—Slave Option (Subaddress 0x8A = X X X X X 0 0 0)
The ADV7342/ADV7343 are controlled by the SAV (start of active video) and EAV (end of active video) time codes embedded in the
pixel data. All timing information is transmitted using a 4-byte synchronization pattern. A synchronization pattern is sent immediately
before and after each line during active picture and retrace. If the
S_VSYNC
and
S_HSYNC
pins are not used, they should be tied to
V
DD_IO
during this mode.
Y
C
r
Y
F
F
0
0
0
0
X
Y
8
0
1
0
8
0
1
0
F
F
0
0
F
F
A
B
A
B
A
B
8
0
1
0
8
0
1
0
F
F
0
0
0
0
X
Y
C
b
Y
C
r
C
b
Y
C
b
Y
C
r
EAV CODE
SAV CODE
ANCILLARY DATA
(HANC)
4 CLOCK
4 CLOCK
268 CLOCK
1440 CLOCK
4 CLOCK
4 CLOCK
280 CLOCK
1440 CLOCK
END OF ACTIVE
VIDEO LINE
START OF ACTIVE
VIDEO LINE
ANALOG
VIDEO
INPUT PIXELS
NTSC/PAL M SYSTEM
(525 LINES/60Hz)
PAL SYSTEM
(625 LINES/50Hz)
Y
06399-101
Figure 99. SD Slave Mode 0
Mode 0 (CCIR-656)—Master Option (Subaddress 0x8A = X X X X X 0 0 1)
The ADV7342/ADV7343 generate H and F signals required for the SAV and EAV time codes in the CCIR656 standard. The H bit is
output on
S_HSYNC
and the F bit is output on
S_VSYNC
.
522 523 524 525
8
9
10 11 20 21 22
DISPLAY
DISPLAY
VERTICAL BLANK
ODD FIELD
EVEN FIELD
H
F
260 261 262 263 264 265 266 267 268 269 270 271 272 273 274
283
284
285
ODD FIELD
EVEN FIELD
DISPLAY
DISPLAY
VERTICAL BLANK
H
F
765
4
32
1
06399-102
Figure 100. SD Master Mode 0, NTSC
D