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參數(shù)資料
| 型號： | 935269343557 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP160 |
| 封裝： | 28 X 28 MM, 3.40 MM HEIGHT, ROHS COMPLIANT, PLASTIC, SOT322-2, MS-022, QFP-160 |
| 文件頁數(shù)： | 47/143頁 |
| 文件大?。?/td> | 696K |
| 代理商： | 935269343557 |
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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. One example of the application capabilities is shown in Fig.48. Figure 1 shows the various interface ports and the main internal function blocks.
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
Full bandwidth PCI-bus master write and read (up to 132 Mbytes/s)
Virtual memory support (4 Mbytes per DMA channel)
Processing of maximum 4095 active samples per line and maximum 4095 lines per frame
Vanity picture (mirror) for video phone and video conferencing applications
Video flip (upside down picture)
Colour space conversion with gamma correction for different kinds of displays
Chroma Key generation and utilization
Pixel dithering for low resolution video output formats
Brightness, contrast and saturation control
Video and Vertical Blanking Interval (VBI) synchronized programming of internal registers with Register Programming Sequencer (RPS), ability to control two asynchronous data
streams simultaneously
Memory Management Unit (MMU) supports virtual demand paging memory management (Windows, Unix, etc.)
Rectangular clipping of frame buffer areas minimizes PCI-bus load
Random shape mask clipping protects selectable areas of frame buffer
3 x 128 Dword video FIFO with overflow detection and ?graceful? recovery.
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)
Video synchronous audio capture, e.g. for sound cards
Various synchronization modes to support I2S-bus and other different audio and DSP data formats
Audio input level monitoring enables peak control via software
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Datasheet
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SAA7146A
(Product Specification)
25-Aug-04, 139 Pages,
575kB
Multimedia bridge, high performance Scaler and PCI
circuit (SPCI)
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SAA7146A - Multimedia bridge, high performance Scaler and PCI circuit (SPCI) from NXP Semiconductors
29-Sep-2008
http://www.nxp.com/
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