bt865a Conexant Systems, Inc., bt865a Datasheet - Page 46

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

Circuit Description
Figure 1-27. CVBS (Composite) Video Output Waveform SETUPDIS = 1
Table 1-13. CVBS (Composite) Video Output Truth Table SETUPDIS = 1
1-36
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 (100/0/75/0).
FOOTNOTE:
(1)
GENERAL NOTE:
Typical with 37.5 Ω 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.
saturation (100/0/100/0) color bars are shown.
BLANK occurs by external BLANK* pin or internally generated BLANK.
Description
32.88
26.68
12.01
8.00
4.00
1.80
0.00
mA
1.233
1.000
0.450
0.300
0.150
0.068
0.000
Ω
V
load, nominal RSET, and clipping off. ITU-RBT.470-3 levels are assumed. 100% amplitude, 100%
32.88 [30.61]
26.68 [26.68]
12.01 [12.01]
8.00 [8.00]
8.00 [8.00]
4.00 [4.00]
1.80 [3.76]
Iout (mA)
0 [0]
Conexant
DAC Data
998 [929]
800 [800]
363 [363]
240 [240]
240 [240]
117 [117]
41 [110]
0 [0]
(10 Cycles)
Color Burst
800
736
Sync Interval
634
570
0
0
0
0
0
0
0
1
470
406
304
Bt864A/Bt865A Data Sheet
White Level
Black/Blank
Level
Sync Level
BLANK*
1
1
x
1
0
x
1
0
(1)
100138C
02/17/03
100138_028