w89c840af Winbond Electronics Corp America, w89c840af Datasheet - Page 29

• Manufacturer Part Number: w89c840af
• Description: 100/10mbps Ethernet Controller
• Manufacturer: Winbond Electronics Corp America

is determined by the system BIOS by writing the related data into the bits 0 to 7 of the register F3C/FIR in the
W89C840AF. The data written into the bits0 to 7 of the register F3C/FIR can be used by the driver program to
decide the interrupt service subroutine configuring.
PCI Configuration register
the following:
affecting any data in the W89C840AF internal registers.
a disconnect without data.
The W89C840AF uses only one interrupt pin, INTA#. However, the interrupt line resource assignment
The general attributes of the PCI configuration registers implemented in the W89C840AF are described as
1) Writes to the reserved configuration registers are treated as no-op. The bus access will complete without
2) Read from the reserved or un-implemented registers will be returned 0
3) S/W reset (C00<0> ) has no effect on the PCI configuration registers.
4) H/W reset will clear the PCI configuration registers.
5) The implemented configuration registers support any byte enable combination access.
6) Burst access to the configuration registers will be terminated after 1st data transfer completed with a with
The following table outlined all the PCI configuration registers inside this chip and summarized its function.
Code
F00
F04
F08
F0C
F10
F14
----
F2c
F30
F34
----
F3c
F40
F48
F4c
F50
F54
Abbr.
FID
FCS
FREV
FLT
FBIOA
FBMA
----
FSSID
FERBA
FCAPR
----
FIR
FSR
FWUPCS
FWFOFST
FWF0CRC
FWF1CRC
Meaning
Identification
Command and status
Revision
Latency timer
Base I/O address
Base memory address
Reserved
Subsystem ID
Expansion ROM base address
Capabilities Pointer
Reserved
Interrupt
Signature
Wake-Up Control and Status
Wake-Up Frame Offset
Wake-Up Frame 0 CRC
Wake-Up Frame 1 CRC
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Publication Release Date:October 2000
Revision 1.01
System I/O offset
00H
04H
08H
0cH
10H
14H
18~28H
2cH
30H
34H
38H
3cH
40H
48H
4cH
50H
54H
value.
W89C840AF