I347-AT4 Datasheet, PDF (79/148 Pages) Intel Corporation – Intel® Ethernet Network Connection I347-AT4 Datasheet

Programmer’s Visible State—I347-AT4
Bits
Field
11
Asymmetric
Pause
10
Pause
9
100BASE-T4
8
100BASE-TX
Full-Duplex
7
100BASE-TX
Half-Duplex
Mode
HW
Rst
R/W
See
Descr.
R/W
See
Descr.
R/W
0x0
R/W
See
Descr.
R/W
See
Descr.
SW Rst
Description
Update
Update
Retain
Update
Update
A write to this register bit does not take effect until any one of
the following occurs:
Software reset is asserted (Register 0_0.15)
Restart Auto-Negotiation is asserted (Register 0_0.9)
Power down (Register 0_0.11, 16_0.2) transitions from power
down to normal operation
Copper link goes down.
Upon hardware reset this bit takes on the value of
ENA_PAUSE.
1 = Asymmetric Pause
0 = No asymmetric Pause
A write to this register bit does not take effect until any one of
the following occurs:
Software reset is asserted (Register 0_0.15)
Restart Auto-Negotiation is asserted (Register 0_0.9)
Power down (Register 0_0.11, 16_0.2) transitions from power
down to normal operation
Copper link goes down.
Upon hardware reset this bit takes on the value of
ENA_PAUSE.
1 = MAC PAUSE implemented
0 = MAC PAUSE not implemented
0 = Not capable of 100BASE-T4
A write to this register bit does not take effect until any one of
the following occurs:
Software reset is asserted (Register 0_0.15)
Restart Auto-Negotiation is asserted (Register 0_0.9)
Power down (Register 0_0.11, 16_0.2) transitions from power
down to normal operation
Copper link goes down.
If register 0_0.12 is set to 0 and speed is manually forced to
1000 Mbps in Registers 0_0.13 and 0_0.6, then Auto-
Negotiation will still be enabled and only 1000BASE-T full-
duplex is advertised if register 0_0.8 is set to 1, and
1000BASE-T half-duplex is advertised if 0_0.8 set to 0.
Registers 4_0.8:5 and 9_0.9:8 are ignored. Auto-Negotiation
is mandatory per IEEE for proper operation in 1000BASE-T.
Upon hardware reset this bit takes on the value of C_ANEG[1].
1 = Advertise
0 = Not advertised
A write to this register bit does not take effect until any one of
the following occurs:
Software reset is asserted (Register 0_0.15)
Restart Auto-Negotiation is asserted (Register 0_0.9)
Power down (Register 0_0.11, 16_0.2) transitions from power
down to normal operation
Copper link goes down.
If register 0_0.12 is set to 0 and speed is manually forced to
1000 Mbps in Registers 0.13 and 0.6, then Auto-Negotiation
will still be enabled and only 1000BASE-T full-duplex is
advertised if register 0_0.8 is set to 1, and 1000BASE-T half-
duplex is advertised if 0.8 set to 0. Registers 4.8:5 and 9.9:8
are ignored. Auto-Negotiation is mandatory per IEEE for
proper operation in 1000BASE-T.
Upon hardware reset this bit takes on the value of C_ANEG[1].
1 = Advertise
0 = Not advertised
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