bt865a Conexant Systems, Inc., bt865a Datasheet - Page 45

• Manufacturer Part Number: bt865a
• Description: Ycrcb To Ntsc/pal Digital Video Encoder
• Manufacturer: Conexant Systems, Inc.

Bt864A/Bt865A Data Sheet
Figure 1-26. CVBS (Composite) Video Output Waveform SETUPDIS = 0
Table 1-12. CVBS (Composite) Video Output Truth Table SETUPDIS = 0
100138C
02/17/03
Peak Chroma (High)
White
Burst (High)
Black
Blank
Burst (Low)
Peak Chroma (Low)
Sync
GENERAL NOTE:
1. Typical with 37.5
2. Bracketed values indicate expected values when using the internal color bars (100/7.5/75/7.5).
FOOTNOTE:
1. BLANK occurs by external BLANK* pin or internally generated BLANK.
GENERAL NOTE:
Typical with 37.5 Ω 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.
color bars (100/7.5/100/7.5) are shown.
Description
32.55
26.68
11.41
9.07
7.60
3.80
3.20
0.00
mA
1.221
1.000
0.423
0.340
0.285
0.143
0.120
0.000
Ω
V
load, nominal RSET, clipping off, and chroma on. SMPTE 170 M levels are assumed. 100% saturation
32.55 [30.38]
26.68 [26.68]
11.41 [11.41]
9.07 [9.07]
7.60 [7.60]
3.80 [3.80]
3.20 [5.32]
Iout (mA)
34 IRE
100 IRE
40 IRE
0 [0]
20 IRE
20 IRE
7.5 IRE
Conexant
DAC Data
988 [922]
801 [801]
345 [345]
272 [272]
228 [228]
111 [111]
85 [149]
0 [0]
Color Burst
(9 Cycles)
801
740
Sync Interval
644
583
0
0
0
0
0
0
0
1
489
429
332
White Level
Black Level
Blank Level
Sync Level
BLANK*(1)
Circuit Description
1
1
x
1
0
x
1
0
100138_027
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