Intel GD82559ER - Manual (Page 73)

Datasheet 67
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 0 RO
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
0 RW
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