82598EB Datasheet, PDF (403/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - Register Descriptions
OPCODE
STCODE
MDICMD
MDIINPROGEN
27:26
00b
29:28
01b
30
0b
31
0b
OP Code
Two bits identifying operation to be performed (default = 00b).
00b = Address cycle (new protocol only).
01b = Write operation.
10b = Read operation.
11b = Read, increment address (new protocol only).
ST Code
Two bits identifying start of frame and old or new protocol (default =
01b).
00b = New protocol.
01b = Old protocol.
1x = Illegal.
MDI Command
Perform the MDI operation in this register; cleared when done.
1b = Perform operation; operation in progress.
0b = MDI ready; operation complete (default).
MDI In Progress Enable
Generate MDI in progress when operation completes.
1b = MDI in progress enabled.
0b = MDI ready disable (default).
4.4.3.13.16MDI Single Read and Write Data – MSRWD (0x04260; RW)
Field
MDIWRDATA
MDIRDDATA
Bit(s)
15:0
31:16
Initial
Value
Description
0x0000
MDI Write Data
Write data For MDI writes to the external device.
0x0000
MDI Read Data
Read data from the external device (RO).
4.4.3.13.17Low MAC Address – MLADD (0x04264; RW)
MACL
Field
Bit(s)
31:0
Initial
Value
Description
0x0
MAC ADRESS [31:0] Least significant 32 bits of the MAC
address
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