adv7344 Analog Devices, Inc., adv7344 Datasheet - Page 70

• Manufacturer Part Number: adv7344
• Description: Multiformat Video Encoder Six 14-bit Noise Shaped Video Dacs
• Manufacturer: Analog Devices, Inc.

ADV7344
70% ± 10%
+700mV
–300mV
70% ± 10%
0mV
–300mV
+700mV
+100 IRE
+70 IRE
–40 IRE
500mV ± 25mV
0mV
0 IRE
PEAK WHITE
SYNC LEVEL
3.128µs ± 90ns
5.8µs ± 0.15µs
11.2µs
5.5µs ± 0.125µs
4T
6T
REF
2.235µs ± 20ns
R = RUN-IN
S = START CODE
REF
Figure 92. Enhanced Definition (525p) CGMS Waveform
Figure 93. Enhanced Definition (625p) CGMS Waveform
R
BIT 1 BIT 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BIT 20
REF
C0
Figure 94. High Definition (720p) CGMS Waveform
Figure 91. Standard Definition CGMS Waveform
S
C1
LSB
C0
T ± 30ns
C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19
C2
BIT 1 BIT 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BIT 20
C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12
C1
C3
C4
Rev. 0 | Page 70 of 88
C2
C5
C3
C6
C4
C7
17.2µs ± 160ns
C5
13.7µs
C8
22T
1H
C6
C9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19
C7
49.1µs ± 0.5µs
T = 1/(
f
H
21.2µs ± 0.22µs
= HORIZONTAL SCAN FREQUENCY
C8
f
H
C9
22T
× 1650/58) = 781.93ns
C10 C11 C12
CRC SEQUENCE
T = 1/(
f
T ± 30ns
H
= HORIZONTAL SCAN FREQUENCY
f
H
MSB
C13
C13 C14 C15 C16 C17 C18 C19
× 33) = 963ns
CRC SEQUENCE
CRC SEQUENCE