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| 型號： | DNC3X3125 |
| 廠商： | Lineage Power |
| 英文描述： | 10/100 Mbits/s Ethernet Transceiver Macrocell(10M位/秒和100 M位/秒以太網(wǎng)收發(fā)器宏單元) |
| 中文描述： | 10/100 Mbits /秒以太網(wǎng)收發(fā)器宏單元（1000萬位/秒和100海里位/秒以太網(wǎng)收發(fā)器宏單元） |
| 文件頁數(shù)： | 23/32頁 |
| 文件大小： | 460K |
| 代理商： | DNC3X3125 |
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Advance Data Sheet
March 2000
DNC3X3125
10/100 Mbits/s Ethernet Transceiver Macrocell
23
4
Register Information
(continued)
Table 17. MR5—Autonegotiation Link Partner Ability (Base Page) Register Bit Descriptions
* The format for the bit descriptions is as follows: the first number is the register number, the second number is the bit position in the register.
R = read.
Table 18. MR5—Autonegotiation Link Partner (LP) Ability Register (Next Page) Bit Descriptions
* 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.
R = read.
Bit
*
Type
R
Description
5.15 (LP_NEXT_PAGE)
Link Partner Next Page.
When this bit is set to 1, it indicates that the link
partner wishes to engage in next page exchange.
Link Partner Acknowledge.
When this bit is set to 1, it indicates that the
link partner has successfully received at least three consecutive and consis-
tent FLP bursts.
Remote Fault.
When this bit is set to 1, it indicates that the link partner has
a fault.
Technology Ability Field.
This field contains the technology ability of the
link partner. These bits are similar to the bits defined for the MR4 register
(see Table 16).
Selector Field.
This field contains the type of message sent by the link part-
ner. For IEEE802.3 compliant link partners, this field should read 00001.
5.14 (LP_ACK)
R
5.13 (LP_REM_FAULT)
R
5.12:5 (LP_TECH_ABILITY)
R
5.4:0 (LP_SELECT)
R
Bit
*
Type
R
Description
5.15 (LP_NEXT_PAGE)
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.
Acknowledge.
When this bit is set to a logic 1, it indicates that the link
partner has successfully received its partner’s link code word.
Message Page.
This bit is used by the NEXT _PAGE function to differenti-
ate a message page (logic 1) from an unformatted page (logic 0).
Acknowledge 2.
This bit is used by the NEXT_PAGE function to indicate
that a device has the ability to comply with the message (logic 1) or not
(logic 0).
Toggle
. This bit is used by the arbitration function to ensure synchroniza-
tion 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.
Message/Unformatted Code Field
. With these 11 bits, there are 2048
possible messages. Message code field definitions are described in annex
28C of the IEEE802.3u standard.
5.14 (LP_ACK)
R
5.13 (LP__MES_PAGE)
R
5.12 (LP_ACK2)
R
5.11 (LP_TOGGLE)
R
5.10:0 (MCF)
R
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