bt865a Conexant Systems, Inc., bt865a Datasheet - Page 44

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

Circuit Description
Figure 1-25. C (Chrominance) Video Output Waveform SETUPDIS = 1
Table 1-11. C (Chrominance) Video Output Truth Table SETUPDIS = 1
1-34
Peak Chroma (High)
Burst (High)
Blank
Burst (Low)
Peak Chroma (Low)
GENERAL NOTE:
1. Typical with 37.5
2. Bracketed values indicate expected values when using the internal color bars (100/0/75/0).
FOOTNOTE:
(1)
GENERAL NOTE: Typical with 37.5 Ω load, nominal RSET, and chroma on. ITU-RBT.470-3 levels are assumed. 100%
saturation (100/0/100/0) color bars are shown.
color bars are shown.
BLANK occurs by external BLANK* pin or internally generated BLANK.
Description
Ω
28.88
21.08
17.07
13.07
5.27
mA
load, nominal RSET, and chroma on. ITU-RBT.470-3 levels are assumed. 100% saturation (100/0/100/0)
1.083
0.791
0.640
0.490
0.198
28.88 [26.06]
21.08 [21.08]
17.07 [17.07]
13.07 [13.07]
5.27 [7.97]
V
Iout (mA)
Color Burst
(10 Cycles)
Conexant
DAC Data
877 [785]
635 [635]
512 [512]
389 [389]
147 [239]
Sync Interval
x
x
x
x
x
Bt864A/Bt865A Data Sheet
BLANK*
Blank
Level
1
0
1
x
x
(1)
100138C
02/17/03
100138_026