t1
t3
t2
nWRITE
PD<7:0>
t4
t5
t6
t7
t8
t9
t10
DATASTB
ADDRSTB
t11
t12
nWAIT
FIGURE 29 – 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
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)
185
190
180
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.
SMSC DS – LPC47M14X
Page 188
Rev. 03/19/2001
SMSC [ SMSC CORPORATION ]
