Datasheet

Table Of Contents
ADV7188
Rev. A | Page 50 of 112
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]
0 (default)—No delay.
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]
0—No delay.
1 (default)—Delays the field toggle/transition on an even field
by a line relative to NFTOG.
05478-031
ADVANCE TOGGLE OF
FIELD BY NFTOG[4:0]
DELAY TOGGLE OF
FIELD BY NFTOG[4:0]
NFTOGSIGN
ODD FIELD?
01
NOYES
NFTOGDELE
ADDITIONAL
DELAY BY
1 LINE
10
NFTOGDELO
ADDITIONAL
DELAY BY
1 LINE
1 0
FIELD
TOGGLE
NOT VALID FOR USER
PROGRAMMING
Figure 31. NTSC Field Toggle
NFTOGSIGN, NTSC Field Toggle Sign, Address 0xE7 [5]
0—Delays the field transition. Set for manual programming.
1 (default)—Advances the field transition. Not recommended
for user programming.
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.
PVBEGDELO, PAL Vsync Begin Delay on Odd Field,
Address 0xE8 [7]
0 (default)—No delay.
1—Delays vsync going high on an odd field by a line relative to
PVBEG.
PVBEGDELE, PAL Vsync Begin Delay on Even Field,
Address 0xE8 [6]
0 (default)—No delay.
1 (default)—Delays vsync going high on an even field by a line
relative to PVBEG.
PVBEGSIGN, PAL Vsync Begin Sign, Address 0xE8 [5]
0—Delays the beginning of vsync. Set for user manual
programming.
1 (default)—Advances the beginning of vsync. Not
recommended for user programming.
PVBEG [4:0], PAL Vsync Begin, Address 0xE8 [4:0]
The default value of PVBEG is 00101, indicating the PAL vsync
begin 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.
Table 63. Recommended User Settings for PAL (see Figure 33)
Register Register Name Write
0x31 Vsync Field Control 1 0x1A
0x32 Vsync Field Control 2 0x81
0x33 Vsync Field Control 3 0x84
0x34 Hsync Position 1 0x00
0x35 Hsync Position 2 0x00
0x36 Hsync Position 3 0x7D
0x37 Polarity 0xA1
0xE8 PAL V bit begin 0x41
0xE9 PAL V bit end 0x84
0xEA PAL F bit toggle 0x06