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10Base-T PHY Registers
A-46
A.4.5 Autonegotiation Link Partner Ability Register–AN_lpa @ 0x5
selector field
Link partner
technology ability field
Link partner
LPRFLTReservedLPNXTPAGE
Byte 0Byte 1
01234567
89101112131415
Table A–22. Autonegotiation Link Partner Ability Register Bits
Bit Name Function
15 LPNXTPAGE Link partner next page: When this bit, is set, the link partner indicates that it has another
page to send. Reception of autonegotiation next pages is optional and is not supported
by this PHY.
14 Reserved For internal use of the autonegotiation process
13 LPRFLT Link partner remote fault: When this bit is set to a 1, the link partner reports a remote
fault condition.
12–10 Reserved: For future IEEE-defined abilities
9 100Base-T4: Set to 1 if supported by the link partner
8 100Base-Tx full duplex: Set to 1 if supported by the link partner
7 100Base-Tx: Set to 1 if supported by the link partner
6 10Base-T full duplex: Set to 1 if supported by the link partner
5 10Base-T: Set to 1 if supported by the link partner
4–0
Link partner
selector field
This five-bit field encodes the format of this register. ThunderLAN only supports IEEE
802.3 format fields (as detailed in bits 12 through 5 above), code 00001. (The only other
currently specified value is 00010, for 802.9a multimedia frames).