參數(shù)資料
型號: BT865AKPF
英文描述: Color Encoder Circuit
中文描述: 顏色編碼器電路
文件頁數(shù): 47/76頁
文件大?。?/td> 1050K
代理商: BT865AKPF
DAC Data
Bt864A/865A
1.0 Circuit Description
YCrCb to NTSC/PAL Digital Video Encoder
1.15 Analog Outputs
100138B
Conexant
1-37
Figure 1-26. CVBS (Composite) Video Output Waveform SETUPDIS = 0
NOTE(S):
Typical with 37.5
load, nominal RSET, clipping off, and chroma on. SMPTE 170 M levels are assumed. 100%
saturation color bars (100/7.5/100/7.5) are shown.
32.55
1.221
mA
V
0.00
0.000
9.07
7.60
0.340
0.285
W
Y
C
G
M
R
B
B
White Level
Black Level
Blank Level
Sync Level
(9 Cycles)
Color Burst
26.68
1.000
34 IRE
100 IRE
20 IRE
7.5 IRE
20 IRE
40 IRE
3.80
3.20
0.143
0.120
11.41
0.423
801
740
644
583
489
429
332
Table 1-12. CVBS (Composite) Video Output Truth Table SETUPDIS = 0
Description
Iout (mA)
Sync Interval
BLANK*
(1)
Peak Chroma (High)
32.55 [30.38]
988 [922]
0
1
White
26.68 [26.68]
801 [801]
0
1
Burst (High)
11.41 [11.41]
345 [345]
0
x
Black
9.07 [9.07]
272 [272]
0
1
Blank
7.60 [7.60]
228 [228]
0
0
Burst (Low)
3.80 [3.80]
111 [111]
0
x
Peak Chroma (Low)
3.20 [5.32]
85 [149]
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, clipping off, and chroma on. SMPTE 170 M levels are assumed. 100% saturation
color bars (100/7.5/100/7.5) are shown.
3. Bracketed values indicate expected values when using the internal color bars (100/7.5/75/7.5).
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