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DP8390DV Fiches technique(PDF) 49 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No de pièce DP8390DV
Description  NIC Network Interface Controller
PDF  56 Pages
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP8390DV Fiches technique(HTML) 49 Page - National Semiconductor (TI)

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150 Switching Characteristics (Continued)
Remote DMA (Read Send Command) Recovery Time
TLF8582 – 85
Symbol
Parameter
Min
Max
Units
bpwrl
Bus Clock to Port Write Low
43
ns
bpwrh
Bus Clock to Port Write High
40
ns
prqh
Port Write High to Port
30
ns
Request High (Note 1)
prql
Port Request Low from
45
ns
Read Acknowledge High
rakw
Remote Acknowledge
20
ns
Read Strobe Pulse Width
rhpwh
Read Acknowledge High to
Next Port Write Cycle
11
BUSCK
(Notes 234)
Note 1
Start of next transfer is dependent on where RACK is generated relative to BSCK and whether a local DMA is pending
Note 2
This is not a measured value but guaranteed by design
Note 3
RACK must be high for a minimum of 7 BUSCK
Note 4
Assumes no local DMA interleave no CS and immediate BACK
49



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