LAN91C100 Datasheet, PDF (52/101 Pages) SMSC Corporation – FEAST™ Fast Ethernet Controller

I/O SPACE - BANK 7
OFFSET
0 THROUGH 7
NAME
EXTERNAL REGISTERS
TYPE
SYMBOL
nCSOUT is driven low by the LAN91C100 when a valid access to the EXTERNAL REGISTER range
occurs.
HIGH
BYTE
EXTERNAL R/W REGISTER
LOW
BYTE
EXTERNAL R/W REGISTER
CYCLE
AEN=0
A3=0
A4-15 matches I/O BASE
BANK SELECT = 7
BANK SELECT = 4,5,6
Otherwise
nCSOUT
LAN91C100 DATA BUS
Driven low.
Ignored on writes.
Transparently latched on Tri-stated on reads.
nADS rising edge.
High
High
Ignore cycle.
Normal LAN91C100 cycle.
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