Data Sheet

Ethernet Controller I210 — Programming Interface
386
8.2.6 Copper/Fiber Switch Control - CONNSW (0x0034; R/W)
8.2.7 VLAN Ether Type - VET (0x0038; R/W)
This register is used by hardware to identify 802.1Q (VLAN) Ethernet packets by comparing the Ether
Type field carried by packets with the field contents. To be compliant with the 802.3ac standard, the
VET.VET field has a value of 0x8100.
8.2.8 LED Control - LEDCTL (0x0E00; RW)
This register controls the setup of the LEDs. Refer to Section 7.5.1 for details of the Mode fields
encoding.
Field Bit(s) Initial Value Description
Reserved 1:0 00b Reserved
ENRGSRC 2 0b
1
1. The default value of the ENRGSRC bit in this register is defined in the Initialization Control 3 (Offset 0x24) Flash word (bit 15).
SerDes Energy Detect Source
0b = SerDes Energy detect source is internal.
1b = SerDes Energy detect source is from SRDS_[n]_SIG_DET pin.
This bit defines the source of the signal detect indication used to set link up
while in SerDes mode.
Note: In SGMII and 1000BASE-KX modes energy detect source is
internal and value of CONNSW.ENRGSRC bit should be 0b.
Reserved 8:3 0x0
Reserved.
Write 0x0, ignore on read.
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, 1000BASE-
KX 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.
PHY_PDN (RO) 11 X
This bit indicates that the internal GbE PHY is in power down state.
0b = Internal GbE PHY not in power down.
1b = Internal GbE PHY in power down.
Reserved 31:12 0x0
Reserved.
Write 0x0, ignore on read.
Field Bit(s) Initial Value Description
VET (RO) 15:0 0x8100 VLAN EtherType
VET EXT 31:16 0x8100 External VLAN Ether Type.