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| 型號(hào)： | SAF7118H |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類(lèi)： | 通用總線功能 |
| 英文描述： | Multistandard video decoder with adaptive comb filter and component video input |
| 封裝： | SAF7118EH/V1<SOT807-1 (HBGA156)|<<http://www.nxp.com/packages/SOT807-1.html<1<,;SAF7118EH/V1<SOT807-1 (HBGA156)|<<http://www.nxp.com/packages/SOT807-1.html<1<,; |
| 文件頁(yè)數(shù)： | 44/175頁(yè) |
| 文件大小： | 898K |
| 代理商： | SAF7118H |
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SAF7118_4
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 04 — 4 July 2008
44 of 175
NXP Semiconductors
SAF7118
Multistandard video decoder with adaptive comb filter
The flow is controlled by internal data valid and data request flags (internal handshake
signalling) between the sub-blocks; therefore the entire scaler acts as a pipeline buffer.
Depending on the actual programmed scaling parameters the effective buffer can exceed
to an entire line. The access/bandwidth requirements to the VGA frame buffer are reduced
significantly.
The high performance video scaler in the SAF7118 has the following major blocks:
Acquisition control (horizontal and vertical timer) and task handling (the
region/field/frame based processing)
Prescaler, for horizontal downscaling by an integer factor, combined with appropriate
band limiting filters, especially anti-aliasing for CIF format
Brightness, saturation, contrast control for scaled output data
Line buffer, with asynchronous read and write, to support vertical upscaling (e.g. for
videophone application, converting 240 into 288 lines, Y-C
B
-C
R
4 : 2 : 2)
Vertical scaling, with phase accurate Linear Phase Interpolation (LPI) for zoom and
downscale, or phase accurate ACcumulation Mode (ACM) for large downscaling
ratios and better alias suppression
Variable Phase Delay (VPD), operates as horizontal phase accurate interpolation for
arbitrary non-integer scaling ratios, supporting conversion between square and
rectangular pixel sampling
Output formatter for scaled Y-C
B
-C
R
4 : 2 : 2, Y-C
B
-C
R
4 : 1 : 1 and Yonly (format also
used for raw data)
FIFO, 32-bit wide, with 64 pixel capacity in Y-C
B
-C
R
formats
Output interface, 8-bit or 16-bit (only if extended by H port) data pins wide,
synchronous or asynchronous operation, with stream events on discrete pins, or
coded in the data stream
The overall H and V zooming (HV_zoom) is restricted by the input/output data rate
relationships. With a safety margin of 2 % for running in and running out, the maximum
in_pixel
in_lines
×
HV_zoom is equal to:
For example:
1. Input from decoder: 50 Hz, 720 pixel, 288 lines, 16-bit data at 13.5 MHz data rate,
1 cycle per pixel; output: 8-bit data at 27 MHz, 2 cycles per pixel; the maximum
720
288
×
×
HV_zoom is equal to:
2. Input from X port: 60 Hz, 720 pixel, 240 lines, 8-bit data at 27 MHz data rate
(ITU 656), 2 cycles per pixel; output via I + H port: 16-bit data at 27 MHz clock,
1 cycle per pixel; the maximum HV_zoom is equal to:
16.666 ms
22
64
s
×
–
720
240
1
37 ns
0.98
out_cycle_per_pix
T_out_clk
×
×
-----------------------------------------------------------------------------------------------------------------------------
×
0.98
37 ns
×
2
----------------------------------------------------
×
1.18
=
0.98
--------------------------------------------------------
×
2.34
=
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAF7118H/V1,557 | 功能描述:視頻 IC COMPONENT VID DECODR RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| SAF7129AH | 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Digital video encoder |
| SAF7129AH/V1 | 功能描述:視頻 IC 6 DAC VIDEO ENCODER RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| SAF7129AH/V1,518 | 功能描述:視頻 IC 6 DAC VIDEO ENCODER RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| SAF7129AH/V1,557 | 功能描述:視頻 IC 6 DAC VIDEO ENCODER RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
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