Intel PCI User Manual
Software Developer’s Manual
215
Register Descriptions
Table 13-2. Ethernet Controller Register Summary
Category
Offset
Abbreviation
Name
R/W
Page
General
00000h
CTRL
Device Control
R/W
General
00008h
STATUS
Device Status
R
General
00010h
EECD
EEPROM/Flash Control/Data
R/W
General
00014h
EERD
EEPROM Read (not applicable to the
82544GC/EI)
82544GC/EI)
R/W
General
0001Ch
FLA
Flash Access (applicable to the 82541xx and
82547GI/EI only)
82547GI/EI only)
R/W
General
00018h
CTRL_EXT
Extended Device Control
R/W
General
00020h
MDIC
MDI Control
R/W
General
00028h
FCAL
Flow Control Address Low
R/W
General
0002Ch
FCAH
Flow Control Address High
R/W
General
00030h
FCT
Flow Control Type
R/W
General
00038h
VET
VLAN EtherType
R/W
General
00170h
FCTTV
Flow Control Transmit Timer Value
R/W
General
00178h
TXCW
Transmit Configuration Word (not applicable to
the 82540EP/EM, 82541xx and 82547GI/EI)
the 82540EP/EM, 82541xx and 82547GI/EI)
R/W
General
00180h
RXCW
Receive Configuration Word (not applicable to
the 82540EP/EM, 82541xx and 82547GI/EI)
the 82540EP/EM, 82541xx and 82547GI/EI)
R
General
00E00h
LEDCTL
LED Control (not applicable to the 82544GC/
EI)
EI)
R/W
DMA
01000h
PBA
Packet Buffer Allocation
R/W
Interrupt
000C0h
ICR
Interrupt Cause Read
R
Interrupt
000C4h
ITR
Interrupt Throttling (not applicable to the
82544GC/EI)
82544GC/EI)
R/W
Interrupt
000C8h
ICS
Interrupt Cause Set
W
Interrupt
000D0h
IMS
Interrupt Mask Set/Read
R/W
Interrupt
000D8h
IMC
Interrupt Mask Clear
W
Receive
00100h
RCTL
Receive Control
R/W
Receive
02160h
FCRTL
Flow Control Receive Threshold Low
R/W
Receive
02168h
FCRTH
Flow Control Receive Threshold High
R/W
Receive
02800h
RDBAL
Receive Descriptor Base Low
R/W
Receive
02804h
RDBAH
Receive Descriptor Base High
R/W
Receive
02808h
RDLEN
Receive Descriptor Length
R/W
Receive
02810h
RDH
Receive Descriptor Head
R/W
Receive
02818h
RDT
Receive Descriptor Tail
R/W
Receive
02820h
RDTR
Receive Delay Timer
R/W
Receive
0282Ch
RADV
Receive Interrupt Absolute Delay Timer (not
applicable to the 82544GC/EI)
applicable to the 82544GC/EI)
R/W
Receive
02C00h
RSRPD
Receive Small Packet Detect Interrupt (not
applicable to the 82544GC/EI)
applicable to the 82544GC/EI)
R/W
Transmit
00400h
TCTL
Transmit Control
R/W
Transmit
00410h
TIPG
Transmit IPG
R/W
Transmit
00458h
AIFS
Adaptive IFS Throttle - AIT
R/W
Transmit
03800h
TDBAL
Transmit Descriptor Base Low
R/W
Transmit
03804h
TDBAH
Transmit Descriptor Base High
R/W
Transmit
03808h
TDLEN
Transmit Descriptor Length
R/W
Transmit
03810h
TDH
Transmit Descriptor Head
R/W
Transmit
03818h
TDT
Transmit Descriptor Tail
R/W
Transmit
03820h
TIDV
Transmit Interrupt Delay Value
R/W