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DP8496 Datasheet(PDF) 90 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # DP8496
Description  SCSI-2 Disk Data Controller
PDF  92 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP8496 Datasheet(HTML) 90 Page - National Semiconductor (TI)

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70 AC Specifications (Continued)
735 DIFFERENTIAL TRANSCEIVER DIRECTION CONTROL (DP8497 Only)
(Continued)
TLF11212 – 70
ID
Symbol
Parameter
Min
Max
Units
355
bdsab
BSY Direction Signal Assertion to BSY Assertion
sdsas
SEL Direction Signal Assertion to SEL Assertion
b
30
30
ns
rdsar
RST Direction Signal Assertion to RST Assertion
356
bdbdsd
BSY Deassertion to BSY Direction Signal Deassertion
sdsdsd
SEL Deassertion to SEL Direction Signal Deassertion
b
30
30
ns
rdrdsd
RST Deassertion to RST Direction Signal Deassertion
Note All SCSI signals are active-high on the DP8497
736 DIFFERENTIAL TRANSCEIVER DIRECTION CONTROL FOR TARGET AND INITIATOR SIGNALS
(DP8497 Only)
a) DP8496DP8497 Attempting SELECT or RESELECT
TLF11212 – 71
b) DP8496DP8497 Being SELECTed or RESELECTed
TLF11212 – 72
ID
Symbol
Parameter
Min
Max
Units
361
soatds
SEL Output Assertion to TARG Direction Signal Assertion
bcp b 30
bcp a 30
ns
soaids
SEL Output Assertion to INIT Direction Signal Assertion
362
sidtds
SEL Input Assertion to TARG Direction Signal Assertion
bcp
6 bcp
ns
sidids
SEL Input Assertion to INIT Direction Signal Assertion
Note 1
DTARG and DINIT are deasserted in the BUS FREE phase
Note 2
bcp refers to the Bus Clock Period in use
All SCSI signals are active-high on the DP8497
90



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