lan91c100 Standard Microsystems Corp., lan91c100 Datasheet - Page 52

• Manufacturer Part Number: lan91c100
• Description: Feast ? Ast Ethernet Controller
• Manufacturer: Standard Microsystems Corp.

I/O SPACE - BANK 7
nCSOUT is driven low by the LAN91C100 when a valid access to the EXTERNAL REGISTER range
occurs.
0 THROUGH 7
BYTE
BYTE
HIGH
LOW
OFFSET
AEN=0
A3=0
A4-15 matches I/O BASE
BANK SELECT = 7
BANK SELECT = 4,5,6
Otherwise
CYCLE
EXTERNAL REGISTERS
Driven low.
Transparently latched on
nADS rising edge.
High
High
NAME
EXTERNAL R/W REGISTER
EXTERNAL R/W REGISTER
nCSOUT
52
Ignored on writes.
Tri-stated on reads.
Ignore cycle.
Normal LAN91C100 cycle.
LAN91C100 DATA BUS
TYPE
SYMBOL