Non-PCI Single-Chip Full Duplex Ethernet Controller
A0-15
(ISA)
VALID ADDRESS
AEN,
nSBHE
nIOCS16
nIORD
t9
Z
t18
Z
IOCHRDY
t19
VALID DATA
D0-D15
OUT
Parameter
Control Active to IOCHRDY Low
IOCHRDY Width when Data is Unavailable at
Data Register
Valid Data to IOCHRDY Inactive
min
typ
max
units
t9
15
ns
t18
575
225
ns
ns
t19
IOCHRDY is used instead of meeting t20 and t43.
"No Wait St' bit is 1 - IOCHRDY only negated if needed and only for Data Register access.
Figure 12.4 – Data Register Special Read Access
SMSC DS – LAN91C96I
Page 95
Rev. 11/18/2004
DATASHEET