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DP5380 Datasheet(PDF) 25 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # DP5380
Description  Asynchronous SCSI Interface (ASI)
PDF  32 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP5380 Datasheet(HTML) 25 Page - National Semiconductor (TI)

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100 AC Electrical Characteristics (Continued)
1010 DMA WRITE (BLOCK MODE) INITIATOR SEND
TLF9756 – 21
Symbol
Parameter
DP5380
Units
Min
Typ
Max
dhi
SCSI Data Hold from Write EnableInitiator
15
ns
dhwr
DMA Data Hold Time from End of WR
30
ns
dswd
Data Setup to End of DMA Write Enable
50
ns
dtdf
DACK True to DRQ False
100
ns
eop
Width of EOP Pulse (Note 2)
40
ns
rfyt
REQ False to READY True
80
ns
rtat
REQ True to ACK True
100
ns
rtwf
READY True to WR False
60
ns
wfaf
WR False to ACK False (REQ False)
120
ns
wfrf
WR False to READY False
100
ns
wwb
DMA Write Enable Width (Note 1)
60
ns
Note 1
Write enable (DMA) is DACK and WR active
Note 2
EOP DACK RDWR must all be true for recognition of EOP
25



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