t1
t3
t2
nWRITE
PD<7:0>
t4
t5
t6
t7
t8
t9
t10
DATASTB
ADDRSTB
t11
t12
nWAIT
FIGURE 19 – EPP 1.9 DATA OR ADDRESS READ CYCLE
NAME
t1
t2
t3
t4
t5
t6
t7
t8
t9
t10
DESCRIPTION
MIN
0
60
60
0
0
60
0
TYP
MAX
185
190
180
UNITS
nWAIT Asserted to nWRITE Deasserted
nWAIT Asserted to nWRITE Modified (Notes 1,2)
nWAIT Asserted to PDATA Hi-Z (Note 1)
Command Asserted to PDATA Valid
Command Deasserted to PDATA Hi-Z
nWAIT Asserted to PDATA Driven (Note 1)
PDATA Hi-Z to Command Asserted
nWRITE Deasserted to Command
nWAIT Asserted to Command Asserted
nWAIT Deasserted to Command Deasserted
(Note 1)
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
190
30
1
0
60
195
180
t11
t12
PDATA Valid to nWAIT Deasserted
PDATA Hi-Z to nWAIT Asserted
0
0
ns
μs
Note 1: nWAIT is considered to have settled after it does not transition for a minimum of 50 ns.
Note 2: When not executing a write cycle, EPP nWRITE is inactive high.
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