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DP83905AVQB датащи(PDF) 71 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
номер детали DP83905AVQB
подробное описание детали  AT Local Area Network Twisted-Pair Interface Controller
PDF  80 Pages
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производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP83905AVQB датащи(HTML) 71 Page - National Semiconductor (TI)

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80 Preliminary Switching Characteristics
Memory Support Bus Accesses (for IO port or FIFO transfers)
TLF11498 – 53
8-Bit
16-Bit
Symbol
Description
Transfers
Transfers
Units
Min
Max
Min
Max
T1
MSA1b15 Valid before RCS
30
30
ns
Asserted (Note 1)
T2
MSA1b15 Valid before
20
20
ns
MSRDbWR Asserted
T3
MSRDbWR Width
70
70
ns
T4
RCS and MSA1b15 Valid to
105
105
ns
MSWR Deasserted (Note 1)
T5
MSA1b15 Valid after
10
10
ns
MSRDbWR Deasserted
T6
RCS Held after MSRDbWR
10
10
ns
Deasserted (Note 1)
T7
RCS and MSA1b15 Valid to
100
100
ns
MSD0b15 Valid (Note 1)
T8
Read Data Hold from MSRD Deasserted
0
0
ns
T9
Write Data Set-Up to MSWR Deasserted
50
50
ns
T10
Write Data Held from MSWR Deasserted
10
10
ns
T11
Time Between Transfers
4
4
bcyc
T12
Minimum Bus Clock High Time (bch)
20
20
ns
T13
Minimum Bus Clock Low Time (bcl)
20
20
ns
T14
Minimum Bus Clock Cycle Time (bcyc)
50
50
ns
Note 1
In 8-bit mode RCS refers to RCS1 only In 16-bit mode RCS refers to both RCS1 and RCS2
71



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