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DP5380 Fiches technique(PDF) 21 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No de pièce DP5380
Description  Asynchronous SCSI Interface (ASI)
PDF  32 Pages
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP5380 Fiches technique(HTML) 21 Page - National Semiconductor (TI)

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100 AC Electrical Characteristics (Continued)
106 DMA WRITE (NON-BLOCK MODE) INITIATOR SEND
TLF9756 – 17
Symbol
Parameter
DP5380
Units
Min
Typ
Max
dfaf
DACK False to ACK False (Non-Block Initiator Send)
120
ns
dfdt
DACK False to DRQ True
30
90
ns
dhi
SCSI Data Hold from Write EnableInitiator
15
ns
dhwr
DMA Data Hold Time from End of WR
30
ns
dkhw
DACK Hold from End of WR
0
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 1)
40
ns
rfdt
REQ False to DRQ True
100
ns
rtat
REQ True to ACK True (Initiator Send)
100
ns
wwn
DMA Non-Block Mode Write Enable Width (Note 2)
60
ns
Note 1
EOP DACK RDWR must all be true for recognition of EOP
Note 2
Write enable (DMA) is DACK and WR active
21



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