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参数资料
| 型号： | 8817 |
| 厂商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | NTSC/PAL Digital Video Encoder |
| 中文描述： | NTSC / PAL数字视频编码器 |
| 文件页数： | 14/43页 |
| 文件大小： | 818K |
| 代理商： | 8817 |
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ASAHI KASEI
[AK8817]
MS0413-E-00
14
2005 / Aug
Video Encoder
Functional Outline
(1) Reset
(1-1) Reset of Serial Interface part ( asynchronous reset )
Reset is made by setting RSTN pin to low.
(1-2) Reset of other than Serial Interface blocks
Reset is made by keeping RSTN pin low for a longer than 100 clock time, in normal operation.
(1-3) at Power-On-Reset ( including power-down release case )
Follow the power-on-reset sequence.
At the completion of each initialization, all internal registers are set to default values ( refer to Register Map ). Right after
the reset, Video output of the AK8817 is put into Hi-Z condition.
(2) Power-Down
It is possible to put the device into power-down mode by setting the AK8817 power-down pin to GND.
Transition to power-down mode should be followed by the power-down sequence. As for the recover from the
power-down mode, it should be followed by the power-down release sequence.
(3) Master Clock
A following clock should be input as a Master clock.
In Encoder Mode operation ( a synchronized clock with input data is required )
When ITU-R BT.601 data is input
( PIXRT-bit = 0 )
NTSC Encoder
27MHz
PAL Encoder
27MHz
(4) Video Signal Interface
Video input signal ( data ) should be synchronized in either of the following methods :
* Slave mode operation where synchronization is made with HSYNC ( HDI ) / VSYNC ( VDI ).
* ITU-R BT. 656 I / F ( EAV decode ) (only 27MHz operation)
(5) Pixel Data
Input data to the AK8817 is YCbCr ( 4:2:2 ).
Data with Y : 16 ~ 235 and CbCr : 16 ~ 240 should be input.
(6) Video Signal Conversion
Video Re-Composition module converts the multiplexed data ( ITU-R BT.601 Level Y, Cb, Cr ) into interlaced
NTSC-M and PAL-B, D, G, H, I data. Video encoding setting is done by “Control 1 Register “.
When Square Pixel data is input
( PIXRT-bit = 1 )
24.5454MHz
29.50MHz
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 881703-1 | 制造商:TE Connectivity 功能描述:2,0MM DIA PIN RECEP - Bulk 制造商:TE Connectivity 功能描述:Pins and Receptacles |
| 8817-100 | 制造商:Belden Inc 功能描述: |
| 881719-1 | 功能描述:端子 .110 S FASTIN-ON TA RoHS:否 制造商:AVX 产品:Junction Box - Wire to Wire 系列:9826 线规:26-18 接线柱/接头大小: 绝缘: 颜色:Red 型式:Female 触点电镀:Tin over Nickel 触点材料:Beryllium Copper, Phosphor Bronze 端接类型:Crimp |
| 881719-2 | 功能描述:端子 .110 S FASTIN-ONTAB RoHS:否 制造商:AVX 产品:Junction Box - Wire to Wire 系列:9826 线规:26-18 接线柱/接头大小: 绝缘: 颜色:Red 型式:Female 触点电镀:Tin over Nickel 触点材料:Beryllium Copper, Phosphor Bronze 端接类型:Crimp |
| 881719-7 | 制造商:TE Connectivity 功能描述:.110 S. FASTIN-ONTAB - Bulk |
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