LAN9420 Datasheet, PDF (151/171 Pages) SMSC Corporation – Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface

Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface
Datasheet
Table 4.10 lists the standard PCI header registers that are supported. Registers whose initial values
for Subsystem Vendor ID and Subsystem Device ID, are configured from the EEPROM are indicated
by ‘YES’ in the “EPROM CONFIGURABLE” column.
Table 4.10 Standard PCI Header Registers Supported
CONFIGURATION
SPACE OFFSET
REGISTER NAME
00h - 01h
02h - 03h
04h - 05h
06h - 07h
08h
09h - 0Bh
0Ch
0Dh
0Eh
0F - 1Bh
1Ch - 1Fh
Vendor ID
Device ID
Command
Status
Revision ID
Class Code
Cache Line Size
Latency Timer
Header Type
RESERVED
BAR 3 (Note 4.8)
(For NP-Mem mapped 1Kbyte)
20h - 23h
BAR 4 (Note 4.8)
(For I/O mapped 256byte)
24h - 2Bh
2Ch - 2Dh
2EH - 2Fh
30h - 33h
34h
35h - 3Bh
3Ch
3Dh
3Eh
3Fh
RESERVED
Subsystem Vendor ID (SSVID)
(Note 4.9)
Subsystem Device ID (SSID)
(Note 4.9)
RESERVED
Capabilities Pointer
RESERVED
Interrupt Line
Interrupt Pin
Min_Gnt
Max_Lat
READ/
WRITE
RO
RO
R/W
RO, R/WC
RO
RO
R/W
R/W
RO
RO
R/W
R/W
RO
RO
DEFAULT
1055h
E420h
00h
0410h
Note 4.7
020000h
00h
00h
00h
00000000h
(FFFFFC00h)
0000001h
(FFFFFF01h)
1055h
EEPROM
CONFIGURABLE
YES
RO
9420h
YES
RO
RO
78h
RO
R/W
00h
RO
01h
RO
02h
RO
04h
Note 4.7 Default value is dependent on device revision.
Note 4.8 BAR3’s read back value is FFFFFC00h after writing FFFFFFFFh. BAR4’s read back value
is FFFFFF01h after writing FFFFFFFFh.
Note 4.9
The Subsystem Vendor ID and Subsystem Device ID can be configured by the serial
EEPROM. if no EEPROM is connected to LAN9420/LAN9420i, then the default values in
the table are used.
SMSC LAN9420/LAN9420i
151
DATASHEET
Revision 1.6 (07-18-11)