ADV7342 datasheet(70/88 Pages) AD

Il numero della parte	ADV7342

Spiegazioni elettronici	Multiformat Video Encoder Six, 11-Bit, 297 MHz DACs

PDF	88 Pages

Scroll/Zoom	100%

Produttore elettronici	AD [Analog Devices]

Homepage	http://www.analog.com

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70 / 88 page

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

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

LSB

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

3.128µs ± 90ns

17.2µs ± 160ns

22T

T = 1/(

fH × 1650/58) = 781.93ns

fH = HORIZONTAL SCAN FREQUENCY

T ± 30ns

0mV

–300mV

70% ± 10%

+700mV

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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