參數(shù)資料
型號： 935262922557
廠商： NXP SEMICONDUCTORS
元件分類： 消費家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP160
封裝： PLASTIC, SOT-322, QFP-160
文件頁數(shù)： 52/147頁
文件大?。?/td> 526K
代理商： 935262922557
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Product INFOrmation page
Information as of 2001-06-12
SAA7146A; Multimedia bridge, high performance Scaler and PCI circuit (SPCI)
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Description
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The SAA7146A, Multimedia PCI-bridge, is a highly integrated circuit for DeskTop Video (DTV) applications. The
device provides a number of interface ports that enable a wide variety of video and audio ICs to be connected to
the PCI-bus thus supporting a number of video applications in a PC.
Features
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Video processing
Full size, full speed video delivery to and from the frame buffer or virtual system memory enables various
processing possibilities for any external PCI device
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Full bandwidth PCI-bus master write and read (up to 132 Mbytes/s)
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Virtual memory support (4 Mbytes per DMA channel)
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Processing of maximum 4095 active samples per line and maximum 4095 lines per frame
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Vanity picture (mirror) for video phone and video conferencing applications
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Video flip (upside down picture)
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Colour space conversion with gamma correction for different kinds of displays
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Chroma Key generation and utilization
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Pixel dithering for low resolution video output formats
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Brightness, contrast and saturation control
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Video and Vertical Blanking Interval (VBI) synchronized programming of internal registers with Register
Programming Sequencer (RPS), ability to control two asynchronous data streams simultaneously
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Memory Management Unit (MMU) supports virtual demand paging memory management (Windows, Unix,
etc.)
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Rectangular clipping of frame buffer areas minimizes PCI-bus load
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Random shape mask clipping protects selectable areas of frame buffer
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3 x 128 Dword video FIFO with overflow detection and ‘graceful’ recovery.
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Audio processing
Time Slot List (TSL) processing for flexible control of audio frames up to 256 bits on 2 asynchronous
bidirectional digital audio interfaces simultaneously (4 DMA channels)
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Video synchronous audio capture, e.g. for sound cards
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Various synchronization modes to support I2S and other different audio and DSP data formats
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Audio input level monitoring enables peak control via software
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Programmable bit clock generation for master and slave applications.
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Scaling
Scaling of video pictures down to randomly sized windows (vertical down to 1 : 1024; horizontal down to 1
: 256)
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Philips Semiconductors: Product information on SAA7146A, Multimedia bridge, high performance Scaler and PCI circuit (SPCI)
file:///E|/export/projects/bitting2/imaging/BITTING/mail_pdf/cpl_images/v3.html (1 of 3) [7/17/2001 6:16:51 PM]
相關(guān)PDF資料
PDF描述
935242220551 SPECIALTY CONSUMER CIRCUIT, PQFP208
935242220557 SPECIALTY CONSUMER CIRCUIT, PQFP208
935260698551 SPECIALTY CONSUMER CIRCUIT, PQFP160
935260698557 SPECIALTY CONSUMER CIRCUIT, PQFP160
935260699551 SPECIALTY CONSUMER CIRCUIT, PQFP208
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