參數(shù)資料
型號(hào)： AK8811
廠商： Asahi Kasei Microsystems Co.,Ltd
英文描述： NTSC/PAL Digital Video Encoder
中文描述： NTSC / PAL數(shù)字視頻編碼器
文件頁(yè)數(shù)： 30/36頁(yè)
文件大?。?/td> 377K
代理商： AK8811
ASAHI KASEI
[AK8811/12]
Rev.1.1 2000/01
30
DAC Mode Register (W only default 00H)
Sub Add
05H
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
OUTC
bit 0
OUTY
Reserved Reserved Reserved Reserved Reserved
OUTCP
Symbol
OUTCP
Value
Description
0 Composite video signal or U signal output : OFF
1 Composite video singal or U signal output : ON
0 Chroma signal or V signal output : OFF
1 Chroma signal or V signal output : ON
0 Y signal output : OFF
1 Y signal output : ON
default
OUTC
default
OUTY
default
Video output of AK 8811/12 (DAC) can be forced “OFF” independently.
The output of DAC that is forced “OFF” is Hi-impedance. When three DACs are
forced “OFF”, then the internal VREF is also forced “OFF”. In this case, it takes
several miliseconds before the internal VREF reaches the proper voltage after any
DAC becomes “ON”.
SubC Freq. Register (W only default 00H)
Sub Add
06H
bit 7
SUBF7
bit 6
SUBF6
bit 5
SUBF5
bit 4
SUBF4
bit 3
SUBF3
bit 2
SUBF2
bit 1
SUBF1
bit 0
SUBF0
Symbol
Value
Description
SUBF7-SUBF0
Adjustment of frequency between
+127 and –128 step of 0.8Hz
default 0
AK 8811/12 generates the necessary sub-carrier frequency from a system clock by DFS
(Digital Frequency Synthesizer)
Frequency of default is adjustable by specifying this bit. This bit adjusts the default
frequency.
SubC Phase Register (W only default 00H)
Sub Add
07H
bit 7
SUBP7
bit 6
SUBP6
bit 5
SUBP5
bit 4
SUBP4
bit 3
SUBP3
bit 2
SUBP2
bit 1
SUBP1
bit 0
SUBP0
Symbol
Value
description
SUBP7 – SUBP0
Step: (360
°
/256
°
)
default 0
Sub- carrier phase is adjustable by (360
°
/256) step.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK8812 制造商:AKM 制造商全稱(chēng):AKM 功能描述:NTSC/PAL Digital Video Encoder
AK8813 制造商:AKM 制造商全稱(chēng):AKM 功能描述:NTSC/PAL Digital Video Encoder
AK8813/14VGP-L 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:NTSC/PAL VIDEO ENCODER, LOWCOS
AK8813/14VQP 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:NTSC/PAL VIDEO ENCODER, LOWCOS
AK8813P 制造商:AKM 制造商全稱(chēng):AKM 功能描述:NTSC/PAL Digital Video Encoder
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