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VLAN Ether Type - VET (00038h; R/W) — Intel
®
82575EB Gigabit Ethernet Controller
324632-003 Intel
®
82575EB Gigabit Ethernet Controller
Revision: 2.1 Software Developer’s Manual and EEPROM Guide
January 2011 327
14.3.11 VLAN Ether Type - VET (00038h; R/W)
This register contains the type field hardware matches against to recognize an 802.1Q (VLAN) Ethernet
packet and uses when add and transmit VLAN Ethernet packets. To be compliant with the 802.3ac
standard, this register should be programmed with the value 8100h. For VLAN transmission the upper
byte is first on the wire (VET[15:8]).
14.3.12 Fuse Register - UFUSE (5B78h; RO)
SerDesD (RO) 9 X SerDes Signal Detect Indication
Indicates the SerDes signal detect value according to the selected source
(either external or internal). Valid only if LINK_MODE is SerDes or SGMII.
PHYSD (RO) 10 X PHY Signal Detect Indication
Valid only if LINK_MODE is the PHY and the receiver is not in electrical idle.
Reserved 31:11 0h Reserved
1. Words 24h and 14h (bit 15) in the EEPROM defines the default of the ENRGSRC bit in this register for LAN0 and LAN1 respectively.
Field Bit(s)
Initial
Value
Description
VET 15:0 8100h VLAN EtherType
Should be programmed with 8100h.
VET EXT 31:16 8100h External VLAN Ether Type.
Field Bit(s) Initial Value Description
Number of LANs 0 Fuse
dependent
If disabled, LAN1 is disabled, otherwise both ports are enabled
Note: Fuse is always enabled.
PCIEPerf 1 Fuse
dependent
PCIe* performance (high or low PCIe* lane count).
See Table 90.
Note: This fuse use is always enabled.
Manageability 2 Fuse
dependent
0b - Reserved.
1b = Enable manageability.
I/OAT 3 Fuse
dependent
Enables DMA engine unlocking and header replication.
Copper-SerDes 4 Fuse
dependent
When enabled, both SerDes and 1000BASE-T PHY are enabled,
including SFP.
When blown, 1000BASE-T is disabled (consider de-powering).
IDV Enable 5 Fuse
dependent
When enabled, IDV DFT feature is enabled.
VT/iSCSI Enable 6 Fuse
dependent
When enabled, VT and iSCSI support is enabled.
Spare fuses 9:7 Fuse
dependent
Two spare fuses.
LNO NIC 10 Fuse
dependent
Anti-counterfeit measures to identify returned NICs.
Software readable fuse; no action required.