t20
AX
t15
t19
t11
t22
nIOR
t13
t12
S D<7:0>
t8
t3
t10
IOCHRDY
nWRITE
t5
t4
P D<7:0>
t23
t2
nDATAS TB
nADDRS TB
t21
nWAIT
Parameter
min
max
units
Notes
t2
t3
t4
t5
t8
t10
t11
t12
t13
t15
t19
t20
t21
t22
t23
nIOR Deassert ed to Command Deasserted
nWAIT Asserted to IOCHRDY Deasserted
Command Deasserted to PDATA Hi-Z
Command Asserted to PDATA Valid
nIOR Asserted to IOCHRDY Asserted
nWA IT Deasserted to nIOCHRDY Deasserted
nIOCHRDY Deasserted to nIOR Deasserted
nI OR Deasserted to SDATA Hi gh-Z (Hold Time)
PData Valid to SDATA Valid
Time Out
Ax Valid to nIOR Asserted
nIOR Deasserted to Ax Invalid
Command Deasserted to nWAIT Deasserted
nIOR Deasserted to nIOW or nIOR Asserted
nIOR Asserted t o Command Asserted
50
40
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
ns
ns
ns
0
0
0
24
50
0
0
40
40
12
10
40
10
0
40
55
1. nWRITE is controlled by setting the PDIR bit to "1"in the control register before
performing an EPP Read.
FIGURE 18 - EPP 1.7 DATA OR ADDRESS READ CYCLE
155
SMSC [ SMSC CORPORATION ]
