adv7180 Analog Devices, Inc., adv7180 Datasheet - Page 47

• Manufacturer Part Number: adv7180
• Description: 10-bit, 4 X Oversampling Sdtv Video Decoder
• Manufacturer: Analog Devices, Inc.

NVEND[4:0], NTSC Vsync End, Address 0xE6 [4:0]
The default value of NVEND is 00100, indicating the NTSC
vsync end position.
For all NTSC/PAL vsync timing controls, both the V bit in the
AV code and the vsync on the VS pin are modified.
NFTOGDELO, NTSC FIELD Toggle Delay on Odd Field,
Address 0xE7 [7]
When NFTOGDELO is 0 (default), there is no delay.
Setting NFTOGDELO to 1 delays the field toggle/transition on
an odd field by a line relative to NFTOG.
NFTOGDELE, NTSC Field Toggle Delay on Even Field,
Address 0xE7 [6]
When NFTOGDELE is 0, there is no delay.
Setting NFTOGDELE to 1 (default) delays the field toggle/
transition on an even field by a line relative to NFTOG.
NFTOGSIGN, NTSC Field Toggle Sign, Address 0xE7 [5]
Setting NFTOGSIGN to 0 delays the field transition. Set for
user manual programming.
Setting NFTOGSIGN to 1 (default) advances the field
transition. Not recommended for user programming.
OUTPUT
OUTPUT
VIDEO
VIDEO
H
V
H
V
F
F
PVBEG[4:0] = 0x5
622
310
PVBEG[4:0] = 0x5
311
623
PFTOG[4:0] = 0x3
624
312
Figure 38. PAL Default, ITU-R BT.656 (the Polarity of H, V, and F is Embedded in the Data)
PFTOG[4:0] = 0x3
625
313
FIELD 1
FIELD 2
1
314
2
315
316
3
Rev. B | Page 47 of 112
317
4
318
5
NFTOG[4:0], NTSC Field Toggle, Address 0xE7 [4:0]
The default value of NFTOG is 00011, indicating the NTSC
field toggle position.
For all NTSC/PAL field timing controls, both the F bit in the
AV code and the field signal on the FIELD/DE pin are modified.
319
NOT VALID FOR USER
6
PROGRAMMING
7
320
ADVANCE TOGGLE OF
FIELD BY NFTOG[4:0]
NFTOGDELO
ADDITIONAL
DELAY BY
8
321
1 LINE
YES
Figure 37. NTSC FIELD Toggle
1
322
1
9
PVEND[4:0] = 0x4
10
335
0
NFTOGSIGN
ODD FIELD?
TOGGLE
FIELD
PVEND[4:0] = 0x4
22
336
0
FIELD BY NFTOG[4:0]
DELAY TOGGLE OF
337
23
NFTOGDELE
ADDITIONAL
DELAY BY
0
1 LINE
NO
24
1
ADV7180