參數(shù)資料
型號： SM5906AF
廠商： Seiko NPC Corporation
英文描述： Shock-proof Memory Controller for Video CD Players
中文描述： 防震視頻光盤播放器內(nèi)存控制器
文件頁數(shù)： 17/30頁
文件大小： 231K
代理商： SM5906AF
NIPPON PRECISION CIRCUITS-17
SM5906AF
Flag
name
FLAG6
Read
method
READ
90H
bit 7
Meaning
– Indicates to the CD signal processor DSP (used for error correction, de-interleaving) that a
disturbance has exceeded the RAM jitter margin.
– 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
– By 90H status read
– By 80H command when MSON=ON
– After external reset
– When MSWACL, MSRACL are issued
– Indicates once only that a write to external DRAM has caused an overflow. (When reset
by the 90H status read command, this flag is reset even if the overflow condition continues.)
– When the write address (WA) exceeds the read address (RA)
– By 90H status read
– After external reset
– When MSWACL, MSRACL are issued
– Indicates input data rate was too fast causing buffer overflow and loss of data
– When data is input while the previous data is still being processed.
– By 90H status read
– After external reset
– When MSWACL, MSRACL are issued
– Indicates residual is not updated because sync data not verified for
≥
2 blocks
– When sync data is not verified for
≥
2 blocks
(C2PO error etc.)
– When sync data is verified
– After external reset
– When MSWACL, MSRACL are issued
– Indicates that a compare-connect sequence is operating
– When a (3-pair or 2-pair) compare-connect start command is received (MSDCN2=1)
– When a direct connect command is received (MSDCN2=0, MSDCN1=1)
– 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
– Indicates that the write sequence has stopped due to internal factors
(not microcontroller commands)
– When FLAG6 (above) is set
– When BOVF (above) is set
– When MSOVF (above) is set
– 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
Set
Reset
MSOVF
READ
90H
bit 6
Meaning
Set
Reset
BOVF
READ
90H
bit 5
Meaning
Set
Reset
SYNCER
READ
90H
bit 4
Meaning
Set
Reset
DCOMP
READ
90H
bit 3
Meaning
Set
Reset
MSWIH
READ
90H
bit 2
Meaning
Set
Reset
Status flag operation summary
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