82598EB Datasheet, PDF (84/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - PCIe
PCI Function
LAN Functions
Default Value
0x0000
EEPROM Address
0x0B
Subsystem Vendor ID – This value can be loaded automatically from the EEPROM at power up or
reset. A value of 0x8086 is the default for this field at power up if the EEPROM does not respond or is
not programmed. All functions are initialized to the same value.
Cap_Ptr – The Capabilities Pointer field (Cap_Ptr) is an 8-bit field that provides an offset in the 82598's
PCI configuration space for the location of the first item in the capabilities linked list. The 82598 sets
this bit, and implements a capabilities list to indicate that it supports PCI power management, MSIs,
and PCIe extended capabilities. Its value is 0x40, which is the address of the first entry: PCI power
management.
Address
0x40-47
0x50-5F
0x60-6F
0xA0-DB
Item
PCI Power Management.
Message Signaled Interrupt.
Extended Message Signaled Interrupt.
PCIe Capabilities.
Next Pointer
0x50
0x60
0xA0
0x00
Interrupt Pin – Read-only register.
• LAN 0 / LAN 1¹- A value of 0x1/0x2 indicates that this function implements a legacy interrupt on
INTA/INTB respectively. Loaded from EEPROM word 0x24/0x14 for LAN 0 and LAN 1, respectively.
Refer to the following detail for cases in which LAN port(s) are disabled.
Interrupt Line – Read/write register programmed by software to indicate which of the system
interrupt request lines the 82598's interrupt pin is bound to. Refer to the PCI definition for more details.
Max_Lat/Min_Gnt – Not used. Hardwired to 0b.
3.1.1.14.4 PCI Power Management Registers
All fields are reset at full power-up. All fields except PME_En and PME_Status are reset after exiting
from the D3cold state. If AUX power is not supplied, the PME_En and PME_Status fields reset after
exiting from the D3cold state.
Refer to the detailed description below for registers loaded from the EEPROM at initialization.
Initialization values of the Configuration registers are marked in parenthesis.
Notation:
• Dotted – Fields that are identical to all functions
• Light-blue – Read-only fields
• Magenta – Hardcoded and strapping option
1. If only a single device/function of the 82598 component is enabled, this value is ignored, and the
Interrupt Pin field of the enabled device reports INTA# usage.
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