參數(shù)資料
型號: ADV7176KS
廠商: ANALOG DEVICES INC
元件分類: 顏色信號轉(zhuǎn)換
英文描述: Integrated Digital CCIR-601 YCrCb to PAL/NTSC Video Encoder
中文描述: COLOR SIGNAL ENCODER, PQFP44
封裝: PLASTIC, QFP-44
文件頁數(shù): 23/36頁
文件大小: 447K
代理商: ADV7176KS
ADV7175/ADV7176
REV. A
–23–
75
27
26
S VIDEO
31
32
5k
+5V (V
CC
)
150
24
5k
+5V (V
CC
)
MPU BUS
44
22
15
17
16
10, 19, 21
29, 36, 43
18
23
34
38–42,
2–9, 12–14
1, 11, 20, 28, 30, 37
0.1μF
0.01μF
0.1μF
+5V (V
AA
)
0.1μF
+5V (V
AA
)
10k
+5V (V
AA
)
27MHz CLOCK
(SAME CLOCK AS USED BY
MPEG2 DECODER)
POWER SUPPLY DECOUPLING
FOR EACH POWER SUPPLY GROUP
10μF
33μF
GND
L1
(FERRITE BEAD)
+5V (V
CC
)
25
33
GND
ALSB
HSYNC
FIELD/
VSYNC
BLANK
RESET
CLOCK
R
SET
SDATA
SCLOCK
COMPOSITE
BLUE/
COMPOSITE/
U
RED/
CHROMA/
V
GREEN/
LUMA/
Y
V
AA
V
REF
COMP
P15–P0
+5V (V
AA
)
75
75
75
35 SCRESET/RTC
ADV7175
ADV7176
“UNUSED
INPUTS
SHOULD BE
GROUNDED”
Figure 41. Recommended Analog Circuit Layout
T he circuit below can be used to generate a 13.5 MHz waveform using the 27 MHz clock and the
HSYNC
pulse. T his waveform is
guaranteed to produce the 13.5 MHz clock in synchronization with the 27 MHz clock. T his 13.5 MHz clock can be used if
13.5 MHz clock is required by the MPEG decoder. T his will guarantee that the Cr and Cb pixel information is input to the
ADV7175/ADV7176 in the correct sequence.
D
Q
CK
D
Q
CK
CLOCK
HSYNC
13.5MHz
Figure 42. Circuit to Generate 13.5 MHz
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