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Networking Silicon — GD82559ER
9.1.3 Register 2: PHY Identifier Register Bit Definitions
9.1.4 Register 3: PHY Identifier Register Bit Definitions
9.1.5 Register 4: Auto-Negotiation Advertisement Register Bit Definitions
9.1.6 Register 5: Auto-Negotiation Link Partner Ability Register Bit
Definitions
Bit(s) Name Description Default R/W
15:0 PHY ID (high
byte)
Value: 02A8H -- RO
Bit(s) Name Description Default R/W
15:0 PHY ID (low byte) Value: 0154H -- RO
Bit(s) Name Description Default R/W
15 Next Page Constant 0 = Transmitting primary capability data
page
0RO
14 Reserved This bit is reserved and should be set to 0b. 0 RO
13 Remote Fault 1 = Indicate link partner’s remote fault
0 = No remote fault
0RW
12:5 Technology Ability
Field
Technology Ability Field is an 8-bit field containing
information indicating supported technologies specific
to the selector field value.
00101111 RW
4:0 Selector Field The Selector Field is a 5-bit field identifying the type of
message to be sent via Auto-Negotiation. This field is
read only in the 82559ER and contains a value of
00001b, IEEE Standard 802.3.
00001 RO
Bit(s) Name Description Default R/W
15 Next Page This bit reflects the PHY’s link partner’s Auto-
Negotiation ability.
-- RO
14 Acknowledge This bit is used to indicate that the 82559ER’s PHY
unit has successfully received its link partner’s Auto-
Negotiation advertising ability.
-- RO
13 Remote Fault This bit reflects the PHY’s link partner’s Auto-
Negotiation ability.
-- RO
12:5 Technology Ability
Field
This bit reflects the PHY’s link partner’s Auto-
Negotiation ability.
-- RO
4:0 Selector Field This bit reflects the PHY’s link partner’s Auto-
Negotiation ability.
-- RO