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參數(shù)資料
| 型號： | W9966TF |
| 文件頁數(shù)： | 20/44頁 |
| 文件大?。?/td> | 278K |
| 代理商： | W9966TF |
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Prel i m nary -20- November 1997
W9966CF/TF
Video Camera Interface Controller with Compression
7.4Memory Controller
A frame buffer (SRAM) is needed to buffer the real-time CCD data for frame rate adjustment. The
Memory Controller is designed to arbitrate memory requests from the CCD and the host, and to
generate all SRAM control signals.
7.4.1Memory Size and Estimated Performance
Table 7.5 shows the memory size needed and the estimated performance for various picture formats.
The performance is estimated based on the assumption of 1.2 Mbytes/s ECP bandwidth.
TABLE 7.5 MEMORY SIZE AND ESTIMATED PERFORMANCE
PICTURE FORMAT
SRAM
PERFORMANCE
(fps)
160x120, Raw Data, Original Transfer
32Kx8x1
30
160x120, YUV4:2:0, Original Transfer
32Kx8x1
30
160x120, YUV4:2:2, Original Transfer
32Kx8x2
30
176x144, Raw Data, Original Transfer
32Kx8x1
30
176x144, YUV4:2:0, Original Transfer
32Kx8x2
30
176x144, YUV4:2:2, Original Transfer
32Kx8x2
23.67
320x240, Raw Data, Original Transfer
128Kx8x1
15.63
320x240, YUV4:2:0, Original Transfer
128Kx8x1
10.42
320x240, YUV4:2:2, Original Transfer
128Kx8 + 32Kx8
7.81
320x240, YUV4:2:2, Compressed Transfer
128Kx8x1
15.63
352x288, Raw Data, Original Transfer
128Kx8x1
11.84
352x288, YUV4:2:0, Original Transfer
128Kx8 + 32Kx8
7.89
352x288, YUV4:2:2, Original Transfer
128Kx8x2
5.92
352x288, YUV4:2:2, Compressed Transfer
128Kx8x1
11.84
640x480, Raw Data, Original Transfer
256Kx8 + 128Kx8
3.90
640x480, YUV4:2:0, Original Transfer
256Kx8x2
2.60
Note:
assumes EyEuEv4:2:2 quantization level is used in Compressed Transfer.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| W9966TF | Video Camera Interface Controller With Compression(運用壓縮技術(shù)的攝像照相機接口控制器) |
| W9966CF | Video Camera Interface Controller With Compression(運用壓縮技術(shù)的攝像照相機接口控制器) |
| W9968CF | Digital Camera |
| W9N150V | N-channel 1500V - 2.2ヘ - 8A - TO-247 Very high voltage PowerMESH⑩ Power MOSFET |
| WA-A240PAI | Peripheral Interface |
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| W99685FS | 制造商:WINBOND 制造商全稱:Winbond 功能描述:SYSTEM CAMERA DEVICE |
| W9968CF | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Digital Camera |
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