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LF3321 bảng dữ liệu(PDF) 6 Page - LOGIC Devices Incorporated |
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LF3321 bảng dữ liệu(HTML) 6 Page - LOGIC Devices Incorporated |
6 / 28 page DEVICES INCORPORATED LF3321 Horizontal Digital Image Filter Improved Performance LOGIC Devices Incorporated 6 Feb 5, 2003 LDS.3321-A Video Imaging Products When data reversal is enabled, the circuitry uses a pair of LIFOs to reverse the order of the data sent to the reverse data path. TXFRA and TXFRB control the LIFOs in Filters A and B respectively. When TXFRA/TXFRB goes LOW, the LIFO sending data to the reverse data path becomes the LIFO receiving data from the forward data path, and the LIFO receiving data from the forward data path becomes the LIFO sending data to the reverse data path. The device must see a HIGH to LOW transition of TXFRA/TXFR B in order to switch LIFOs. If decimating by N, TXFRA/TXFRB should go LOW once every N clock cycles. When data reversal is disabled, the circuitry functions like an I/D Register. When feeding interleaved data through the filter, data reversal should be disabled. Bit 6 of Configuration Register 1 and Configuration Register 3 enables or disables data reversal for Filters A and B respectively. Functional Description Data Reversal Continued Figure 7 .Filter A and Filter B Round/Limit/Select Circuitry 32 32 4 RSLA3-0 32 32 4 RSLB3-0 RND LIMIT 32 16 RND LIMIT 32 16 16 16 FILTER B RSL FILTER A RSL DATA IN 32 DATA IN 32 DATA OUT DATA OUT 5 5 SELECT SELECT |
Số phần tương tự - LF3321 |
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Mô tả tương tự - LF3321 |
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