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DP83902AVF データシート(PDF) 62 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部品番号 DP83902AVF
部品情報  ST-NICTM Serial Network Interface Controller for Twisted Pair
PDF  70 Pages
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メーカー  NSC [National Semiconductor (TI)]
ホームページ  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP83902AVF データシート(HTML) 62 Page - National Semiconductor (TI)

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150 Switching Characteristics AC Specs DP83902A Note All Timing is Preliminary (Continued)
Remote DMA (Read Send Command) Recovery Time
TLF11157 – 43
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 Request High (Note 1)
30
ns
prql
Port Request Low from Read Acknowledge High
60
ns
rakw
Remote Acknowledge Read Strobe Pulse Width
20
ns
rhpwh
Read Acknowledge High to Next Port Write Cycle
11
BSCK
(Notes 2 3 4)
Note 1
Start of next transfer is dependent on where RACK is generated relative to BSCK and whether or not 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 BSCK
Note 4
Assumes no local DMA interleave no CS and immediate BACK
62



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