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SM5906AF Datasheet(PDF) 17 Page - Nippon Precision Circuits Inc |
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SM5906AF Datasheet(HTML) 17 Page - Nippon Precision Circuits Inc |
17 / 30 page NIPPON PRECISION CIRCUITS-17 SM5906AF Flag Read name method FLAG6 READ Meaning – Indicates to the CD signal processor DSP (used for error correction, de-interleaving) that a 90H disturbance has exceeded the RAM jitter margin. bit 7 Set – Set according to the YFLAG input and the operating state of YFLGS. – FLAG6 set conditions When YFLGS=0, YFLAG=LOW When YFLGS=1, YFLAG=HIGH Reset – By 90H status read – By 80H command when MSON=ON – After external reset – When MSWACL, MSRACL are issued MSOVF READ Meaning – Indicates once only that a write to external DRAM has caused an overflow. (When reset 90H by the 90H status read command, this flag is reset even if the overflow condition continues.) bit 6 Set – When the write address (WA) exceeds the read address (RA) Reset – By 90H status read – After external reset – When MSWACL, MSRACL are issued BOVF READ Meaning – Indicates input data rate was too fast causing buffer overflow and loss of data 90H Set – When data is input while the previous data is still being processed. bit 5 Reset – By 90H status read – After external reset – When MSWACL, MSRACL are issued SYNCER READ Meaning – Indicates residual is not updated because sync data not verified for ≥ 2 blocks 90H Set – When sync data is not verified for ≥ 2 blocks (C2PO error etc.) bit 4 Reset – When sync data is verified – After external reset – When MSWACL, MSRACL are issued DCOMP READ Meaning – Indicates that a compare-connect sequence is operating 90H Set – When a (3-pair or 2-pair) compare-connect start command is received (MSDCN2=1) bit 3 – When a direct connect command is received (MSDCN2=0, MSDCN1=1) Reset – When a (3-pair or 2-pair) comparison detects conforming data – When the connect has been performed after receiving a direct connect command – When a compare-connect stop command (MSDCN2=0, MSDCN1=0) is received – When a MSWREN=1 command is received (However, if a compare-connect command is received at the same time, WREN has priority.) – After external reset MSWIH READ Meaning – Indicates that the write sequence has stopped due to internal factors 90H (not microcontroller commands) bit 2 Set – When FLAG6 (above) is set – When BOVF (above) is set – When MSOVF (above) is set Reset – When conforming data is detected after receiving a compare-connect start command – When the connect has been performed after receiving a direct connect command – When a read address clear (MSRACL) or write address clear (MSWACL) command is received – After external reset Status flag operation summary |
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