lan83c175 Standard Microsystems Corp., lan83c175 Datasheet - Page 36

• Manufacturer Part Number: lan83c175
• Description: Ethernet Cardbus Integrated Controller With Modem Support Corporation
• Manufacturer: Standard Microsystems Corp.

ROM DECODE
After reset, the ROM will be disabled and the
ROM base address will be unknown.
system POST code will map the ROM into host
memory space, copy its contents into system
RAM and read the CIS structure or execute the
ENABLE
1
1
1
1
0
0
0
0
0
0
MAP ENABLE
MEMORY
X
X
X
X
1
1
1
1
0
0
MEM. SPACE
ENABLE
X
X
1
1
0
0
1
1
0
0
The
36
ROM initialization code The ROM must be found
since it contains the mandatory CIS structure for
CardBus functions. The ROM initialization code
is allowed to perform dynamic re-sizing of the
runtime code in order to use as little of the host
memory space as possible.
I/O SPACE
ENABLE
1
0
1
0
1
0
1
0
1
0
EXPANSION
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Enabled
Enabled
ROM
I/O & Memory
REGISTERS
Mem. Space
CONTROL
I/O Space
I/O Space
I/O Space
I/O Space
Disabled
Disabled
Disabled
Disabled