Data Sheet
Ethernet Controller I210 — Programming Interface
554
8.27.3.2 Copper Status Register - Page 0, Register 1
7 Collision Test RO 0x0 0x0 This bit has no effect.
6
Speed Selection
(MSB)
R/W 0x1 Update
Changes to this bit are disruptive to the normal operation;.As a
result, any changes to these registers must be followed by a
software reset to take effect.
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.
Bits 6 and 13:
11b = Reserved.
10b = 1000 Mb/s.
01b = 100 Mb/s.
00b = 10 Mb/s.
5:0 Reserved RO Always 0x0
Always
0x0
Reserved.
Bits Field Mode HW Rst SW Rst Description
15 100BASE-T4 RO Always 0b Always 0b
100BASE-T4. This protocol is not available.
0 = PHY not able to perform 100BASE-T4.
14
100BASE-X Full-
Duplex
RO Always 1b Always 1b 1b = PHY able to perform full-duplex 100BASE-X.
13
100BASE-X Half-
Duplex
RO Always 1b Always 1b 1b = PHY able to perform half-duplex 100BASE-X.
12
10 Mb/s Full-
Duplex
RO Always 1b Always 1b 1b = PHY able to perform full-duplex 10BASE-T.
11
10 Mb/s Half-
Duplex
RO Always 1b Always 1b 1b = PHY able to perform half-duplex 10BASE-T.
10
100BASE-T2 Full-
Duplex
RO Always 0b Always 0b
This protocol is not available.
0b = PHY not able to perform full-duplex.
9
100BASE-T2 Half-
Duplex
RO Always 0b Always 0b
This protocol is not available.
0b = PHY not able to perform half-duplex.
8 Extended Status RO Always 1b Always 1b 1b = Extended status information in register 15.
7 Reserved RO Always 0b Always 0b Reserved.
6
MF Preamble
Suppression
RO Always 1b Always 1b
1b = PHY accepts management frames with preamble
suppressed.
5
Copper Auto-
Negotiation
Complete
RO 0x0 0x0
1b = Auto-negotiation process complete.
0b = Auto-negotiation process not complete.
4
Copper Remote
Fault
RO,LH 0x0 0x0
1b = Remote fault condition detected.
0b = Remote fault condition not detected.
3
Auto-Negotiation
Ability
RO Always 1b Always 1b 1b = PHY able to perform Auto-Negotiation.