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ADV7342 数据表(PDF) 70 Page - Analog Devices

部件名 ADV7342
功能描述  Multiformat Video Encoder Six, 11-Bit, 297 MHz DACs
PDF  88 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADV7342 数据表(HTML) 70 Page - Analog Devices

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ADV7342/ADV7343
Rev. 0 | Page 70 of 88
CRC SEQUENCE
REF
0 IRE
–40 IRE
+70 IRE
+100 IRE
11.2µs
2.235µs ± 20ns
49.1µs ± 0.5µs
C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19
Figure 91. Standard Definition CGMS Waveform
C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12
CRC SEQUENCE
REF
5.8µs ± 0.15µs
6T
0mV
–300mV
70% ± 10%
T = 1/(
fH × 33) = 963ns
fH = HORIZONTAL SCAN FREQUENCY
T ± 30ns
+700mV
21.2µs ± 0.22µs
22T
C13 C14 C15 C16 C17 C18 C19
BIT 1 BIT 2
BIT 20
Figure 92. Enhanced Definition (525p) CGMS Waveform
R
S
C0
LSB
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10 C11 C12
C13
MSB
PEAK WHITE
SYNC LEVEL
500mV ± 25mV
5.5µs ± 0.125µs
R = RUN-IN
S = START CODE
13.7µs
Figure 93. Enhanced Definition (625p) CGMS Waveform
CRC SEQUENCE
REF
4T
3.128µs ± 90ns
17.2µs ± 160ns
22T
T = 1/(
fH × 1650/58) = 781.93ns
fH = HORIZONTAL SCAN FREQUENCY
1H
T ± 30ns
0mV
–300mV
70% ± 10%
+700mV
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19
BIT 1 BIT 2
BIT 20
Figure 94. High Definition (720p) CGMS Waveform



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