Datasheet

2−28
2.20.22 Horizontal Sync (HSYNC) Start Register
Address 16h
Default 80h
7 6 5 4 3 2 1 0
HSYNC start
HSYNC start:
1111 1111 = −127 x 4 pixel clocks
1111 1110 = −126 x 4 pixel clocks
1111 1101 = −125 x 4 pixel clocks
1000 0000 = 0 pixel clocks (default)
0111 1111 = 1 x 4 pixel clocks
0111 1110 = 2 x 4 pixel clocks
0000 0000 = 128 x 4 pixel clocks
U
BT.656 EAV Code
YOUT
[7:0]
H
SYNC
Y V Y F
F
0
0
0
0
X
Y
8
0
1
0
8
0
1
0
F
F
0
0
0
0
X
Y
U Y
AVID
128 SCLK
N
hbhs
N
hb
Start of
Digital Line
Start of Digital
Active Line
BT.656 SAV Code
Figure 2−9. Horizontal Sync
Table 2−12. Clock Delays (SCLKs)
STANDARD N
hbhs
N
hb
NTSC 16 272
PAL 20 284
SECAM 40 280
Detailed timing information is also available in Section 2.12, Synchronization Signals.