lan91c95 Standard Microsystems Corp., lan91c95 Datasheet - Page 128

• Manufacturer Part Number: lan91c95
• Description: Isa/pcmcia Full Duplex Single-chip Ethernet And Modem Controller With Ram
• Manufacturer: Standard Microsystems Corp.

A0-15
AEN,
nSBHE
nIOCS16
nIORD
nIOWR
D0-D15
IOCHRDY
*Note: Assuming NO WAIT ST = 0 in configuration register and cycle time observed.
**Note: The cycle time is defined only for accesses to the Data Register as follows:
t10
t20
t9
For Data Register Read - From nIORD falling to next nIORD falling
For Data Register Write - From nIOWR rising to next nIOWR rising
Z
Control Active to IOCHRDY Low
IOCHRDY Low Pulse Width*
Cycle time**
FIGURE 29 - ISA CONSECUTIVE READ AND WRITE CYCLES
Z
VALID ADDRESS
t9
Parameter
t10
VALID DATA
t20
Z
128
Z
min
100
185
typ
VALID ADDRESS
max
150
15
VALID DATA
units
ns
ns
ns
Z