82595TX Datasheet, PDF (40/59 Pages) Intel Corporation – ISA/PCMCIA HIGH INTEGRATION ETHERNET CONTROLLER

82595TX
Table 11-4 ISA 8-Bit I O Access
Parameter
Description
Min Max Units
Comments
T1b
BALE Active to Inactive
50
ns
T2b
BALE Active from Command Inactive 35
ns
T3b
AEN Valid to Falling Edge of BALE
20
ns Applies to Early IOCHRDY
T4b
AEN Valid to I O Command Active
100
ns
T5b
AEN Valid from I O Command Inactive 30
ns
T6b
SA Valid to Falling BALE
20
ns Applies to Early IOCHRDY
T7b
SA to CMD Active
63
ns
T8b
SA Valid Hold from CMD Inactive
42
ns
T9b
Valid SA to IOCS16 Active
100 ns
T10b
IOCS16 Valid Hold from Valid SA
0
ns
T11b
CMD Active to Inactive
125
ns
T12b
CMD Inactive to Active
92
ns Before I O Command
T13b
Active CMD to Valid IOCHRDY
18 ns
T14b
IOCHRDY Inactive Pulse
12 ms
T15b
CMD Active Hold from IOCHRDY Active 80
ns Applies to Ready Cycles
T16b
DATA Driven from READ CMD Active
0
ns
T17b
Valid READ Data from CMD Active
54 ns Applies to Standard Cycles Only
T18b
Valid READ Data from IOCHRDY Active
42 ns Applies to Ready Cycles Only
T19b
READ Data Hold from CMD Inactive
0
ns
T20b
READ CMD Inactive to Data Tristate
30 ns
T21b
CMD to WRITE Data Active
62 ns
T22b
WRITE Data Hold from CMD Inactive 15
ns
T23b
WRITE CMD Inactive to Data Tristate
30 ns
T24b
IOCHRDY Inactive to CMD Active
15
ns Applies to Early IOCHRDY
T25b
BALE Inactive to CMD Active
55
ns Applies to Early IOCHRDY
T26b
READ CMD Active to DIRx Active
34 ns
T27b
READ CMD Inactive to DIRx Inactive
15 ns
40