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10/100 Non-PCI Ethernet Single Chip MAC + PHY
Datasheet
Revision 1.91 (08-18-08) 100 SMSC LAN91C111 REV C
DATASHEET
HIGH-END ISA OR NON-BURST EISA MACHINES
On ISA machines, the LAN91C111 is accessed as a 16 bit peripheral. The signal connections are listed
in the following table:
Figure 12.1 LAN91C111 on VL BUS
Table 12.2 High-End ISA or Non-Burst EISA Machines Signal Connectors
ISA BUS
SIGNAL
LAN91C111
SIGNAL
NOTES
A1-A15 A1-A15 Address bus used for I/O space and register decoding.
AEN AEN Qualifies valid I/O decoding - enabled access when low.
nIORD nRD I/O Read strobe - asynchronous read accesses. Address is valid before
leading edge.
W/nR
A2-A15
LCLK
AEN
RESET
INTR0
D0-D31
nRDYRTN
nBE0-nBE3
nADS
nCYCLE
nSRDY nLDEV
LAN91C111
W/nR
A2-A15
LCLK
M/nIO
nRESET
IRQn
D0-D31
nRDYRTN
nBE0-nBE3
nADS
nLRDY
nLDEV
Delay 1 LCLK
O.C.
simulated
O.C.
VLBUS