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DP83902A датащи(PDF) 59 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
номер детали DP83902A
подробное описание детали  ST-NICTM Serial Network Interface Controller for Twisted Pair
PDF  70 Pages
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производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP83902A датащи(HTML) 59 Page - National Semiconductor (TI)

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150 Switching Characteristics AC Specs DP83902A Note All Timing is Preliminary (Continued)
DMA Memory Write
TLF11157 – 40
Symbol
Parameter
Min
Max
Units
bcwl
Bus Clock to Write Strobe Low
40
ns
bcwh
Bus Clock to Write Strobe High
40
ns
wds
Data Setup to MWR High
2 bcyc b 30
ns
wdh
Data Hold from MWR Low
bch a 7ns
waz
Write Strobe to Address TRI-STATE (Notes 1 2)
bch a 40
ns
asds
Address Strobe to Data Strobe
bcl a 10
ns
aswd
Address Strobe to Write Data Valid
bcl a 30
ns
Note 1
When using byte mode transfers A8–A15 are only TRI-STATE on the last transfer waz timing is only valid for last transfer in a burst
Note 2
These limits include the RC delay inherent in our test method These signals typically turn off within bch a 15 ns enabling other devices to drive these
lines with no contention
59



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