dp8390d National Semiconductor Corporation, dp8390d Datasheet - Page 50

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dp8390d

Manufacturer Part Number
dp8390d
Description
Nic Network Interface Controller
Manufacturer
National Semiconductor Corporation
Datasheet

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15 0 Switching Characteristics
Note 1 The first port request is issued in response to the remote write command It is subsequently issued on T1 clock cycles following completion of remote DMA
cycles
Note 2 The start of the remote DMA write following WACK is dependent on where WACK is issued relative to BUSCK and whether a local DMA is pending
Symbol
bprqh
wprql
wackw
bprdl
bprdh
Bus Clock to Port Request High
(Note 1)
WACK to Port Request Low
WACK Pulse Width
Bus Clock to Port Read Low
(Note 2)
Bus Clock to Port Read High
Parameter
Remote DMA (Write Cycle)
(Continued)
50
Min
20
Max
42
45
40
40
TL F 8582 – 86
Units
ns
ns
ns
ns
ns

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