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參數(shù)資料
| 型號： | SAA6721E |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 圖形處理器 |
| 英文描述： | SXGA RGB to TFT graphics engine(XGA RGB 到 TFT圖形引擎) |
| 中文描述： | GRAPHICS PROCESSOR, PBGA292 |
| 封裝： | 27 X 27 MM, 1.75 MM HEIGHT, PLASTIC, SOT-489-1, BGA-292 |
| 文件頁數(shù)： | 53/72頁 |
| 文件大?。?/td> | 360K |
| 代理商： | SAA6721E |
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1999 May 11
53
Philips Semiconductors
Preliminary specification
SXGA RGB to TFT graphics engine
SAA6721E
8.6.3
U
PSCALER TRANSITION FUNCTION
A special feature of the zooming algorithm is a free
programmable transition function which allows smoothing
or sharpening of the transition between pixels that have
been calculated.
This function will be stored in a look-up table, containing
64 words of 7 bits; thus a function of 64 points with a
resolution from 0 to 64 can be programmed.
Programming is performed using the registers coeff_index
and coeff_value. The first register defines the point of the
function, the second the value. Writing to register
coeff_value increments the value of coeff_index
automatically, so that the next point of the function is
addressed. Additionally no register increment will be
performed, so that subsequent I
2
C-bus write addresses
always have the same register coeff_value.
8.7
Panning unit
If the scaled or non-scaled input frame does not fit into the
needed output frame, whether it is to large or to small, the
panning unit enlarges the input frame to the size of the
output frame. This is achieved by generating a border
region around the input frame, or it cuts the input frame
down to the size of the output frame. The position of the
top left pixel of the input frame inside the output frame
must be defined with pic_v_offset and pic_h_offset.
The output frame size must be programmed with
out_v_size and out_h_size (see Fig.17).
If the input frame is to large only the right and bottom part
will be cropped. The colour of the generated border region
must be set via border_colour_red, border_colour_green,
and border_colour_blue.
Fig.17 Picture positioning.
handbook, full pagewidth
MHB257
INPUT FRAME
OUTPUT FRAME
pic_h_offset
pic_h_offset
pic_v_offset
pic_v_offset
out_v_size
out_h_size
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA6750 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Encoder for MPEG2 image recording EMPIRE |
| SAA6750H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Encoder for MPEG2 image recording EMPIRE |
| SAA6752HS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:MPEG-2 video and MPEG-audio/AC-3 audio encoder with multiplexer |
| SAA6752HS/V103 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:MPEG-2 video and MPEG-audio/AC-3 audio encoder with multiplexer |
| SAA6752HS/V103,557 | 功能描述:IC AUD/VID ENCODER MPEG 208-SQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉(zhuǎn)換器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 26/Apr/2011 標(biāo)準(zhǔn)包裝:1 系列:- 類型:編碼器 應(yīng)用:DVB-S.2 系統(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類型:- 封裝/外殼:模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
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