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參數(shù)資料
| 型號(hào)： | BA7232 |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | Color TV Signal Encoder |
| 中文描述： | 彩色電視信號(hào)編碼器 |
| 文件頁(yè)數(shù)： | 5/6頁(yè) |
| 文件大?。?/td> | 74K |
| 代理商： | BA7232 |
5
Multimedia ICs
BA7232FS
NT / PAL
BFP
Chroma phases
burst
B - Y
R - Y
burst
burst
B - Y
B - Y
R - Y
R - Y
Circuit operation
(1) SYNCIN is for composite synch input. During low
input, the synchronization signal is output to YOUT,
VOUT and SYNCOUT.
(2) BFP is for burst flag pulse input. During low input,
the burst signal is output to pins CO and VO. When the
IC is set to PAL, it is this signal that directs the phase
inversion of the chroma signals. This signal also con-
trols the timing of the pedestal clamps of RIN, GIN and
BIN. During low input, the pedestal levels of RIN, GIN
and BIN are kept constant by charging an attached
capacitor.
(3) NT / PAL is the NTSC / PAL selector pin, and con-
nects to V
CC
when set to NTSC and to GND when set
to PAL.
(4) SCIN is for color subcarrier input. Set input to a
pulse wave or sine wave (3.579545MHz for NTSC and
4.433619MHz for PAL).
(5) COUT and YOUT are for output of chroma signals
and luminosity signals, respectively. Because the chro-
ma signal and luminosity signals can be output sepa-
rately, the IC can be adapted for S pins. Each has a
75
driver.
(6) VOUT is for color TV signal output, and has an
internal 75
driver.
(7) ROUT, GOUT and BOUT are for analog RGB sig-
nal output, and have an internal 75
driver.
The relationship between chroma phase and burst phase during PAL processing is as follows.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BA7232FS | 制造商:ROHM 制造商全稱:Rohm 功能描述:Color TV Signal Encoder |
| BA7233 | 制造商:JVC 功能描述:7233 |
| BA7242 | 制造商:ROHM 制造商全稱:Rohm 功能描述:Color TV signal encoder |
| BA7242F | 制造商:ROHM 制造商全稱:Rohm 功能描述:Color TV signal encoder |
| BA7244BS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
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