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Data Sheet

ManualsBrandsIntel ManualsComputing & OfficeIntel Intel Ethernet Server Adapter I210-T1 - Network adapter 1 Gbps LAN (10/100/1000 Mbps), PCI-Express
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Ethernet Controller I210 — Programming Interface
480
8.17.3 PCS Link Status - PCS_LSTS (0x420C; RO)
Force Flow
Control
70b
0b = Flow control mode is set according to the AN process by following Table 37-4 in
the IEEE 802.3 specification.
1b = Flow control is set according to FC_TX_EN / FC_RX_EN bits in CTRL register.
Reserved 15:8 0x0
Reserved.
Write 0x0, ignore on read.
AN_ENABLE 16 0b
1
AN Enable.
Setting this bit enables the AN process in SerDes operating mode.
Note: When link-up is forced (CTRL.SLU=1b) the AN_ENABLE bit should be 0b.
AN RESTART
(SC)
17 0b
AN Restart.
Used to reset/restart the link auto-negotiation process when using SerDes mode.
Setting this bit restarts the auto-negotiation process.
This bit is self clearing.
AN TIMEOUT
EN
18 1b
1
AN Timeout Enable.
This bit enables the AN timeout feature. During AN, if the link partner does not respond
with AN pages, but continues to send good IDLE symbols, then LINK UP is assumed.
(This enables LINK UP condition when link partner is not AN-capable and does not
affect otherwise).
This bit should not be set in SGMII mode.
AN SGMII
BYPASS
19 0b
AN SGMII Bypass.
If this bit is set, then IDLE detect state is bypassed during AN in SGMII mode. This
reduces the acknowledge time in SGMII mode.
AN SGMII
TRIGGER
20 1b
AN SGMII Trigger.
If this bit is cleared, then AN is not automatically triggered in SGMII mode even if
SYNC fails. AN is triggered only in response to PHY messages or by a manual setting
like changing the AN Enable/Restart bits.
Reserved 23:21 0x0
Reserved.
Write 0x0, ignore on read.
FAST LINK
TIMER
24 0b
Fast Link Timer.
AN timer is reduced if this bit is set.
LINK OK FIX
EN
25 1b
Link OK Fix Enable.
Control for enabling/disabling LinkOK/SyncOK fix. Should be set for normal operation.
Reserved 31: 0x0
Reserved.
Write 0x0, ignore on read.
1. Bit loaded from Flash.
Field Bit(s) Initial Value Description
LINK OK 0 0b
Link OK.
This bit denotes the current link OK status.
0b = Link down.
1b = Link up/OK.
SPEED 2:1 10b
Speed.
This bit denotes the current operating speed.
00b = 10 Mb/s.
01b = 100 Mb/s.
10b = 1000 Mb/s.
11b = Reserved.
DUPLEX 3 1b
Duplex.
This bit denotes the current duplex mode.
1b = Full duplex.
0b = Half duplex.
Field Bit(s) Initial Value Description