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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)： | 41/76頁 |
| 文件大?。?/td> | 1050K |
| 代理商： | BT864AKPF |
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Bt864A/865A
1.0 Circuit Description
YCrCb to NTSC/PAL Digital Video Encoder
1.13 SCART/PeriTV Support
100138B
Conexant
1-31
1.13 SCART/PeriTV Support
RGBOUT mode can be enabled by setting the RGBOUT pin to a logical one, or
by setting register bit RGBO. The Bt864A/865A can generate analog RGB video
signals to interface to a SCART/PeriTV connector (see
Table 1-7
). Composite
video will be present on the Y/CVBS DAC. RGB outputs are nominally
700 mVpp (black to white without setup).
1.14 I
2
C Interface
A simplified I
2
C (7-bit subaddress, 100 Kbps) interface is provided for
programming the registers. CLK must be applied and remain stable for I
2
C
communication. Activating SLEEP or RESET* will disable I
2
C communication.
1.15 Analog Outputs
All digital-to-analog converters are designed to drive standard video levels into a
combined RLOAD of 37.5
. Unused outputs should be connected directly to
ground to minimize supply switching currents. In standard mode, one S-Video
(Y/C), and two composite video outputs are available. In RGBOUT mode, one
composite video output along with analog RGB are available (see
Table 1-7
). If
the SLEEP pin is high or DACOFF = 1, the DACs are essentially turned off and
only the leakage current is present. The D/A converter values for 100%
saturation, 100% amplitude color bars are shown in
Figures 1-22
–
1-27
. Both
composite video and analog RGB video (to provide support for SCART/PeriTV)
may be generated simultaneously.
Table 1-7. DAC Output Cross-Reference
DAC Name
Pin Number
Pin Function
Signal
AGND
Std Mode
RGB Out Mode
CVBS/B
8
6
CVBS
B
CVBS/G
10
7
CVBS
G
C/R
12
9
C
R
Y/CVBS
13
11
Y
CVBS
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BT864AKRF | 制造商:CONEXANT 制造商全稱:CONEXANT 功能描述:YCrCb to NTSC/PAL Digital Video Encoder |
| BT864KPF | 制造商:BT 功能描述:COLOR SIGNAL ENCODER, PQFP52 |
| BT864KPF-ES1 | 制造商:BT 功能描述:864KPF-ES1 |
| BT865A | 制造商:CONEXANT 制造商全稱:CONEXANT 功能描述:High Performance YCrCb to NTSC/PAL Digital Video Encoders |
| BT865AKPF | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Color Encoder Circuit |
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