LU6612 Datasheet, PDF (18/36 Pages) Agere Systems – LU6612 FASTCAT TM Single-FET for 10Base-T/100Base-TX

LU6612
FASTCAT Single-FET for 10Base-T/100Base-TX
Data Sheet
July 2000
MII Station Management (continued)
Table 13. MR5—Autonegotiation Link Partner (LP) Ability Register Bit Descriptions (Base_Page)
Bit¹
5.15 (LP_NEXT_PAGE)
5.14 (LP_ACK)
5.13 (LP_REM_FAULT)
5.12:10
5.9 (LP_100BASET4)
5.8 (LP_100BASET_FD)
5.7 (LP_100BASETX)
5.6 (LP_10BASET_FD)
5.5 (LP_10BASET)
5.4:0 (LP_SELECT)
Type²
Description
R Link Partner Next Page. When this bit is set to 1, it indicates that the link
partner wishes to engage in next page exchange.
R Link Partner Acknowledge. When this bit is set to 1, it indicates that the link
partner has successfully received at least three consecutive and consistent
FLP bursts.
R Link Partner Remote Fault. When this bit is set to 1, it indicates that the link
partner has a fault.
R Reserved. These bits are reserved.
R Link Partner 100Base-T4. When this bit is set to 1, it indicates that link part-
ner is capable of 100Base-T4 operation.
R Link Partner 100Base-TX Full Duplex. When this bit is set to 1, it indicates
that link partner is capable of 100Base-TX full-duplex operation.
R Link Partner 100Base-TX. When this bit is set to 1, it indicates that link part-
ner is capable of 100Base-TX operation.
R Link Partner 10Base-T Full Duplex. When this bit is set to 1, it indicates that
link partner is capable of 10Base-T full-duplex operation.
R Link Partner 10Base-T. When this bit is set to 1, it indicates that link partner
is capable of 10Base-T operation.
R Selector Field. This field contains the type of message sent by the link part-
ner. For IEEE 802.3 compliant link partners, this field should read 00001.
1. Note that the format for the pin descriptions is as follows: the first number is the register number, the second number is the bit position in the
register, and the name of the instantiated pad is in capital letters.
2. R = read.
Table 14. MR5—Autonegotiation Link Partner (LP) Ability Register Bit Descriptions (Next_Page)
Bit¹
5.15 (LP_NEXT_PAGE)
5.14 (LP_ACK)
5.13 (LP_MES_PAGE)
5.12 (LP_ACK2)
5.11 (LP_TOGGLE)
5.10:0 (MCF)
Type²
Description
R Next Page. When this bit is set to a logic 0, it indicates that this is the last
page to be transmitted. A logic 1 indicates that additional pages will follow.
R Acknowledge. When this bit is set to a logic 1, it indicates that the link part-
ner has successfully received its partner’s link code word.
R Message Page. This bit is used by the Next_Page function to differentiate a
Message Page (logic one) from an unformatted page (logic zero).
R Acknowledge 2. This bit is used by Next_Page function to indicate that a
device has the ability to comply with the message (logic one) or not (logic
zero).
R Toggle. This bit is used by the arbitration function to ensure synchronization
with the link partner during next page exchange. Logic 0 indicates that the
previous value of the transmitted link code word was logic 1. Logic 1 indicates
that the previous value of the transmitted link code word was logic 0.
R Message/Unformatted Code Field. With these 11 bits, there are 2048 possi-
ble messages. Message code field definitions are described in annex 28C of
the IEEE 802.3u standard.
1. Note that the format for the pin descriptions is as follows: the first number is the register number, the second number is the bit position in the
register, and the name of the instantiated pad is in capital letters.
2. R = read.
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