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參數(shù)資料
| 型號： | AM79C989 |
| 廠商： | Advanced Micro Devices, Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Motor Driver IC; Supply Voltage Max:13.2V; Output Current Max:0.5A; Package/Case:8-SOIC; Driver Type:Motor; Leaded Process Compatible:No; Output Current:1.5A; Peak Reflow Compatible (260 C):No; Supply Voltage Min:3.8V |
| 中文描述： | 四路以太網(wǎng)交換器（QuEST的⑩） |
| 文件頁數(shù)： | 23/37頁 |
| 文件大?。?/td> | 198K |
| 代理商： | AM79C989 |
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Am79C989
23
P R E L I M I N A R Y
Auto-Negotiation Expansion Register (Reg 6)
The Auto-Negotiation Expansion Register (Reg 6) pro-
vides additional information which assists in the Auto-
Negotiation process. The Auto-Negotiation Register
bits are Read/Only (R/O) or Cleared on Read (COR).
This register is duplicated for each port.
Table 14.
Auto-Negotiation Expansion Register (Reg 6)
Auto-Negotiation Next Page Register (Reg 7)
The Auto-Negotiation Next Page Register (Reg 7) con-
tains the next link page link code word to be transmit-
ted. The Auto-Negotiation Next Page Register contains
Read/Write (R/W) or Read/Only (R/O) bits. On power-
up the default value of 0x2001 represents a message
page with the message code set to null. This register is
duplicated for each port.
Table 15.
Auto-Negotiation Next Page Register (Reg 7)
Bit(s)
Name
Description
Read/
Write
Default/
Reset
15:4
Reserved
Written and read as zero.
R/O
0
3
Link Partner Next
Page Able
1 = Link partner is next page able.
0 = Link partner is not next page able.
R/O
0
2
Next Page Able
1 = QuEST device port is next page able.
0 = Not applicable.
R/O
1
1
Page Received
1 = A new page has been received.
0 = A new page has not been received.
Cleared on Read.
R/O, COR
0
0
Link Partner Auto-
Negotiation Able
1 = Link partner is Auto-Negotiation able.
0 = Link partner is not Auto-Negotiation able.
R/O
0
Bit(s)
Name
Description
Read/
Write
Default/
Reset
15
Next Page
1 = QuEST device port next page requested;
0 = QuEST device port next page not requested.
R/W
0
14
Reserved
Written and read as zero.
R/O
0
13
Message Page
1 = QuEST device port message page requested;
0 = QuEST device port unformatted page requested.
R/W
1
12
Acknowledge 2
1 = QuEST device port can comply with the request;
0 = QuEST device port cannot comply with the request.
R/W
0
11
Toggle
QuEST device port toggle bit.
R/O
0
10:0
Message Field
Message code field.
R/W
0x001
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AM79C989JC | Quad Ethernet Switching Transceiver (QuEST⑩) |
| AM79C989JCT | Quad Ethernet Switching Transceiver (QuEST⑩) |
| AM79C98 | Twisted-Pair Ethernet Transceiver (TPEX) |
| AM79C98JC | Twisted-Pair Ethernet Transceiver (TPEX) |
| AM79C98PC | Twisted-Pair Ethernet Transceiver (TPEX) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM79C989JC | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AM79C989JC/T | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AM79C989JCT | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Quad Ethernet Switching Transceiver (QuEST⑩) |
| AM79C98JC | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Twisted-Pair Ethernet Transceiver (TPEX) |
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