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RM0319 数据表(PDF) 290 Page - STMicroelectronics |
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RM0319 数据表(HTML) 290 Page - STMicroelectronics |
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290 / 368 page  JPEG codec accelerator (JPGC) RM0319 290/368 Doc ID 022640 Rev 3 26.4.4 FIFO buffers These two First-in First-out buffers have a word width of 32 bits, and a depth of 8 words. FIFOs are used by the Codec Controller to bufferize the flow of data incoming to (FIFO In) and outcoming from (FIFO out) the Codec Core. Each FIFO is accessed by reading/writing always from/to the same address. 26.4.5 Internal memories These memories have to be programmed, before the encoding process can start, with the tables needed by the baseline JPEG algorithm (see ISO/IEC 10918-1). Up to four quantization tables are used for both encoding and decoding. DHTMem and HuffEnc memories are used for encoding. HuffMin, HuffBase and HuffSymb memories are used for decoding. |
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