Datasheet

Gigabit LAN Configuration Registers
230 Intel® Xeon® Processor D-1500 Product Family
Datasheet - Volume 1 of 4: Integrated Platform Controller Hub
March 2015
6.1.13 SVID—Subsystem Vendor ID Register (Gigabit LAN—
D25:F0)
Address Offset: 2Ch–2Dh Attribute: RO
Default Value: See bit description Size: 16 bits
6.1.14 SID—Subsystem ID Register (Gigabit LAN—D25:F0)
Address Offset: 2Eh–2Fh Attribute: RO
Default Value: See bit description Size: 16 bits
6.1.15 ERBA—Expansion ROM Base Address Register
(Gigabit LAN—D25:F0)
Address Offset: 30h–33h Attribute: RO
Default Value: See bit description Size: 32 bits
6.1.16 CAPP—Capabilities List Pointer Register (Gigabit LAN—
D25:F0)
Address Offset: 34h Attribute: RO
Default Value: C8h Size: 8 bits
6.1.17 INTR—Interrupt Information Register (Gigabit LAN—
D25:F0)
Address Offset: 3Ch–3Dh Attribute: R/W, RO
Default Value: 0100h Size: 16 bits
Function Level Reset: No
Bit Description
15:0 Subsystem Vendor ID (SVID) — RO. This value may be loaded automatically from the NVM Word
0Ch upon power up or reset depending on the "Load Subsystem ID" bit field in NVM word 0Ah. A
value of 8086h is default for this field upon power up if the NVM does not respond or is not
programmed. All functions are initialized to the same value.
Bit Description
15:0 Subsystem ID (SID) — RO. This value may be loaded automatically from the NVM Word 0Bh upon
power up or reset depending on the “Load Subsystem ID” bit field in NVM word 0Ah with a default
value of 0000h. This value is loadable from NVM word location 0Ah.
Bit Description
31:0 Expansion ROM Base Address (ERBA) — RO. This register is used to define the address and size
information for boot-time access to the optional FLASH memory. If no Flash memory exists, this
register reports 00000000h.
Bit Description
7:0 Capabilities Pointer (PTR) — RO. Indicates that the pointer for the first entry in the capabilities
list is at C8h in configuration space.
Bit Description
15:8 Interrupt Pin (IPIN) — RO. Indicates the interrupt pin driven by the GbE LAN controller.
01h = The GbE LAN controller implements legacy interrupts on INTA.
7:0 Interrupt Line (ILINE) — R/W. Default = 00h. Software written value to indicate which interrupt
line (vector) the interrupt is connected to. No hardware action is taken on this register.