Gigabit LAN Configuration Registers
444 Datasheet
12.1.25 MADDL—Message Address Low Register
(Gigabit LAN—D25:F0)
Address Offset: D4h–D7h Attribute: R/W
Default Value: See bit description Size: 32 bits
12.1.26 MADDH—Message Address High Register
(Gigabit LAN—D25:F0)
Address Offset: D8h–DBh Attribute: R/W
Default Value: See bit description Size: 32 bits
12.1.27 MDAT—Message Data Register
(Gigabit LAN—D25:F0)
Address Offset: DCh–DDh Attribute: R/W
Default Value: See bit description Size: 16 bits
12.1.28 FLRCAP—Function Level Reset Capability
(Gigabit LAN—D25:F0)
Address Offset: E0h–E1h Attribute: RO
Default Value: 0009h Size: 16 bits
Bit Description
31:0
Message Address Low (MADDL) — R/W. Written by the system to indicate the lower
32 bits of the address to use for the MSI memory write transaction. The lower two bits
will always return 0 regardless of the write operation.
Bit Description
31:0
Message Address High (MADDH) — R/W. Written by the system to indicate the
upper 32 bits of the address to use for the MSI memory write transaction.
Bit Description
31:0
Message Data (MDAT) — R/W. Written by the system to indicate the lower 16 bits of
the data written in the MSI memory write DWORD transaction. The upper 16 bits of the
transaction are written as 0000h.
Bit Description
15:8
Next Pointer — RO. This field provides an offset to the next capability item in the
capability list. The value of 00h indicates the last item in the list.
7:0
Capability ID — RO. The value of this field depends on the FLRCSSEL bit.
13h = If FLRCSSEL = 0
09h = If FLRCSSEL = 1, indicating vendor specific capability.
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