Datasheet

Table Of Contents
ADV7188
Rev. A | Page 49 of 112
05478-029
ADVANCE BEGIN OF
VSYNC BY NVBEG[4:0]
DELAY BEGIN OF
VSYNC BY NVBEG[4:0]
VSYNC BEGIN
NVBEGSIGN
ODD FIELD?
01
NOYES
NVBEGDELO
VSBHO
ADDITIONAL
DELAY BY
1 LINE
ADVANCE BY
0.5 LINE
1 0
1 0
NVBEGDELE
VSBHE
ADDITIONAL
DELAY BY
1 LINE
ADVANCE BY
0.5 LINE
10
10
NOT VALID FOR USER
PROGRAMMING
Figure 29. NTSC Vsync Begin
NVBEGDELO, NTSC Vsync Begin Delay on Odd Field,
Address 0xE5 [7]
0 (default)—No delay.
1—Delays vsync going high on an odd field by a line relative
to NVBEG.
NVBEGDELE, NTSC Vsync Begin Delay on Even Field,
Address 0xE5 [6]
0 (default)—No delay.
1—Delays vsync going high on an even field by a line relative
to NVBEG.
NVBEGSIGN, NTSC Vsync Begin Sign, Address 0xE5 [5]
0—Delays the start of vsync. Set for user manual programming.
1 (default)—Advances the start of vsync. Not recommended for
user programming.
NVBEG [4:0], NTSC Vsync Begin, Address 0xE5 [4:0]
The default value of NVBEG is 00101, indicating the NTSC
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.
05478-030
ADVANCE END OF
VSYNC BY NVEND[4:0]
DELAY END OF VSYNC
BY NVEND[4:0]
VSYNC END
NVENDSIGN
ODD FIELD?
01
NOYES
NVENDDELO
VSEHO
ADDITIONAL
DELAY BY
1 LINE
ADVANCE BY
0.5 LINE
1 0
1 0
NVENDDELE
VSEHE
ADDITIONAL
DELAY BY
1 LINE
ADVANCE BY
0.5 LINE
10
10
NOT VALID FOR USER
PROGRAMMING
Figure 30. NTSC Vsync End
NVENDDELO, NTSC Vsync End Delay on Odd Field,
Address 0xE6 [7]
0 (default)—No delay.
1—Delays vsync from going low on an odd field by a line
relative to NVEND.
NVENDDELE, NTSC Vsync End Delay on Even Field,
Address 0xE6 [6]
0 (default)—No delay.
1—Delays vsync from going low on an even field by a line
relative to NVEND.
NVENDSIGN, NTSC Vsync End Sign, Address 0xE6 [5]
0 (default)—Delays the end of vsync. Set for user manual
programming.
1—Advances the end of vsync. Not recommended for user
programming.
NVEND [4:0], NTSC Vsync End, Address 0xE6 [4:0]
The default value of NVEND is 00100, indicating the NTSC
vsync end position.