W89C841F Datasheet, PDF (39/102 Pages) Winbond – 3-IN - 1 10/100M FAST ETHERNET CONTROLLER

W89C841F/D
F14/FBIOAD Base I/O Address for Dxx Function Registers
This register is written by software after power-on reset to specify W89C841F base I/O address for
Dxx function registers in the system.
BIT
31: 8
7:1
0
ATTRIBUTE
R/W
R
R
BIT NAME
BIOA
---
IO
DESCRIPTION
Base I/O Address
Written by power-on software to specify base I/O address
for Dxx function registers. W89C841F requires a 256 bytes
I/O space.
Reserved. Fixed at 0.
I/O Space Indicator
Fixed at 1.
F18/FBMA Base Memory Address Register
This register is written by power-on software to specify W89C841F base memory address in the
system.
BIT
31: 9
8:1
0
ATTRIBUTE
R/W
R
R
BIT NAME
BMA
---
MEM
DESCRIPTION
Base Memory Address
Written by power-on software to specify base memory
address for both of Cxx and Dxx function registers.
W89C841F requires a 512 bytes memory space.
Reserved. Fixed at 0.
Memory Space Indicator
Fixed at 0.
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Publication Release Date: October 18, 2001
Revision A3