參數(shù)資料
型號: BT864AKPF
英文描述: Color Encoder Circuit
中文描述: 顏色編碼器電路
文件頁數(shù): 48/76頁
文件大小: 1050K
代理商: BT864AKPF
998 [929]
1.0 Circuit Description
Bt864A/865A
1.15 Analog Outputs
YCrCb to NTSC/PAL Digital Video Encoder
1-38
Conexant
100138B
Figure 1-27. CVBS (Composite) Video Output Waveform SETUPDIS = 1
NOTE(S):
Typical with 37.5
load, nominal RSET, and clipping off. ITU-RBT.470-3 levels are assumed. 100% amplitude,
100% saturation (100/0/100/0) color bars are shown.
32.88
1.233
mA
V
0.00
0.000
26.68
1.000
1.80
0.068
4.00
0.150
8.00
0.300
W
Y
C
G
M
R
B
B
White Level
Black/Blank
Level
SYNC LEVEL
(10 Cycles)
Color Burst
12.01
0.450
800
736
634
570
470
406
304
Table 1-13. CVBS (Composite) Video Output Truth Table SETUPDIS = 1
Description
Iout (mA)
DAC Data
Sync Interval
BLANK*
(1)
Peak Chroma (High)
32.88 [30.61]
0
1
White
26.68 [26.68]
800 [800]
0
1
Burst (High)
12.01 [12.01]
363 [363]
0
x
Black
8.00 [8.00]
240 [240]
0
1
Blank
8.00 [8.00]
240 [240]
0
0
Burst (Low)
4.00 [4.00]
117 [117]
0
x
Peak Chroma (Low)
1.80 [3.76]
41 [110]
0
1
Sync
0 [0]
0 [0]
1
0
NOTE(S):
(1)
BLANK occurs by external BLANK* pin or internally generated BLANK.
2. Typical with 37.5
load, nominal RSET, and clipping off. ITU-RBT.470-3 levels are assumed. 100% amplitude, 100%
saturation (100/0/100/0) color bars are shown.
3. Bracketed values indicate expected values when using the internal color bars (100/0/75/0).
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