ch7019 Chrontel, ch7019 Datasheet - Page 18

• Manufacturer Part Number: ch7019
• Description: Ch7019 Tv Encoder / Lvds Transmitter
• Manufacturer: Chrontel

CHRONTEL
For this table and all subsequent figures, key values are:
Note:
18
Symbol
Table 11: NTSC/PAL Composite Output Timing Parameters
A
B
C
D
E
G
H
F
Description
Front Porch
Horizontal Sync
Breezeway
Color Burst
Back Porch
Black
Active Video
Black
1. RSET = 140 ohms; V(ISET) = 1.235V; 75 ohms doubly terminated load. RSET is the resistor
2. Durations vary slightly in different modes due to the different clock frequencies used.
3. Active video and black (F, G, H) times vary greatly due to different scaling ratios used in different
4. Black times (F and H) vary with position controls.
connected to the ISET pin.
modes.
Figure 9: NTSC / PAL Composite Output
NTSC
287
287
287
340
340
340
287
0
Level (mV)
5 2
0 5 2 1
5 2 2
5 2 3 5 2
4 5 2 5
1
2
3 4
5
6
7
S T
A R T
O F
V S
Y N C
A N A L O G
F I E L D
1
8
9
A N A L O G
F I E L D
2
5 2
0 5 2 1
5 2 2
5 2 3
A N
F I E
A N
F I E
S T A R T
O F V S Y N C
5 2 4 5
2 5 1
2
3
4
5
6 7
A L O G
L D 1
A L O G
L D 2
8
9
PAL
300
300
300
300
300
300
300
0
201-0000-048
37.66 - 52.67
0.00 - 7.50
1.49 - 1.51
4.69 - 4.72
0.59 - 0.61
2.50 - 2.53
1.55 - 1.61
0.00 - 7.50
NTSC
Duration (uS)
Rev. 2.4, 12/18/2006
CH7019B
34.68 - 52.01
1.48 - 1.51
4.69 - 4.71
0.88 - 0.92
2.24 - 2.26
2.62 - 2.71
0.00 - 8.67
0.00 - 8.67
PAL