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ZR36060PQC Datasheet(PDF) 31 Page - List of Unclassifed Manufacturers |
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ZR36060PQC Datasheet(HTML) 31 Page - List of Unclassifed Manufacturers |
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31 / 46 page  29 Integrated JPEG CODEC Codec Mode Register Address 0x003 All other combinations are illegal 11000100 - Auto Two-Pass Compression 10000100 - Statistical Compression Pass 10100100 - Compression Pass with Variable Scale Factor 10100110 - Compression Pass with Fixed Scale Factor 10110000 - Tables-Only Compression Pass 00000000 - Decompression Pass Reserved Address 0x004 Must be 0x00 for correct operation. Maximum Block Code Volume Register Address 0x005 MBCV7:0: Maximum Block Code Volume. In all compression modes, MBCV limits the maximum number of bits that will be used to encode each 8x8 block of samples. The number of bits is twice the value coded in this register. MBCV=01 represents two bits per block, and MBCV=FF represents 510 bits per block. Markers Enable Register Address 0x006 In compression, this register specifies which of the optional marker segments to include in the compressed data. Not used in decompression 0 - don’t include the marker segment 1 - include the marker segment APP: Reads the Application segment from the Internal Memory and writes it to the compressed data during the Compression Pass. Used also in Tables-only pass. COM: Reads the Comment segment from the Internal Memory and writes it to the compressed data during the Compression Pass. Used also in Tables-only pass. DRI: Define Restart Interval. Enables the restart mechanism and writes the DRI marker segment to the compressed data during the Compression Pass. When the restart interval is zero, the restart function is disabled. DQT: Define Quantization Tables. Reads the base Quantization Tables defined in the DQT segment in the Internal Memory, multiplies the quantization values by Scale Factor (SF), rounds them to eight bits and writes the results together with the DQT marker and parameters in the compressed data during the Compression Pass or the Tables-Only Pass. The number of Quantization Tables to be processed is inferred from the LEN (segment length) parameter of the DQT segment. Note: the identical scaled tables are used to compress the data. DHT: Define Huffman Tables. Reads the Huffman Tables defined in the DHT segment in the Internal Memory, and writes the DHT segment in the compressed data during the Compression Pass or the Tables-only Pass. Interrupt Mask Register Address 0x007 DATERR: Enable interrupt upon DATERR signal assertion during the process 0 - Interrupt disabled 1 - Interrupt enabled END: Enable interrupt upon END assertion at the end of process 0 - Interrupt disabled 1 - Interrupt enabled EOI: Enable interrupt when the EOI marker is being read or written (EOI assertion) at the code interface 0 - Interrupt disabled 1 - Interrupt enabled EOAV: Enable interrupt upon End-Of-Active-Video area during the process 0 - Interrupt disabled 1 - Interrupt enabled Interrupt Status Register (Read Only) Address 0x008 DATERR: Status of the DATERR output pin 0 - DATERR is not asserted (normal operation) 1 - DATERR is asserted (data corruption) END: Status of the END output pin 0 - END is not asserted (during the process) 1 - END is asserted (process and returned to IDLE state) EOI: Status of the EOI output pin 0 - an EOI marker event did not occur 1 - an EOI marker has been read or written by the host EOAV: Latch an event upon End-Of-Active-Video area during the process 0 - an EOAV event did not occur (video is still being output or sampled) 1 - an EOAV event occurred (active area of video has finished) ProCnt1:0: 2-bit cyclic Process (compression or decompression) counter. It is reset to one by RESET of the chip and incremented upon START of each field process. Target Net Code Volume Register Address 0x009 - 0x00C TCV_NET[31:0]: Target Net Code Volume. Used only in Auto Two-Pass (2nd. pass) and Compression Pass. TCV_NET is used by the ZR36060 to calculate the new Scale Factor (SF) and Allocation Factor (AF) after the Compression Pass. It is the Target Code Volume in bits for the compressed data excluding the marker segments. 0x003 7 6 5 4 3 2 1 0 COMP PASS2 0 RW – type 1 X X X X X X X default BRC FSF RW RW ATP RW RW RW – 0 TLM 0x004 7 6 5 4 3 2 1 0 0 0 0 –– X X X X X X X X default –– 0 0 – 0 type 0 0 – – – 0x005 7 6 5 4 3 2 1 0 MBCV RW X default type 0x006 7 6 5 4 3 2 1 0 APP RW X default type COM RW X DRI RW X DOT RW X DHT RW X 0 – X 0 – X 0 – X 0x007 7 6 5 4 3 2 1 0 0 – X default type 0 – X 0 – X 0 – X EOAV RW X EOI RW X END RW X DATER RW X 0x008 7 6 5 4 3 2 1 0 ProCnt1 R 0 default type ProCnt0 R 0 X – X X – X EOAV R 0 EOI R 0 END R 1 DATERR R 0 0x009 7 6 5 4 3 2 1 0 TCV_NET[31:24] R/W X default type 0x00A TCV_NET[23:16] 0x00B TCV_NET[15:8] 0x00C TCV_NET[7:0] |
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