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參數(shù)資料
| 型號： | LXT971A |
| 廠商： | Intel Corp. |
| 英文描述： | 3.3V Dual-Speed Fast Ethernet PHY Transceiver |
| 中文描述： | 3.3雙速快速以太網(wǎng)物理層收發(fā)器 |
| 文件頁數(shù)： | 52/90頁 |
| 文件大?。?/td> | 568K |
| 代理商： | LXT971A |
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LXT971A 3.3V Dual-Speed Fast Ethernet Transceiver
52
Datasheet
Document #: 249414
Revision #: 002
Rev. Date: August 7, 2002
4.3
The Fiber Interface
The fiber interface consists of an LVPECL transmit and receive pair to an external fiber-optic
transceiver. Both 3.3 V fiber-optic transceivers and 5 V fiber-optic transceivers can be used with
the LXT971A.
The following should occur in 3.3 V fiber transceiver applications as shown in
Figure 25
:
The transmit pair should be DC-coupled with the 50
/16
pull-up combination
The receive pair should be DC-coupled with an emitter current path for the fiber transceiver
The signal detect pin should be DC-coupled with an emitter current path for the fiber
transceiver
Refer to the fiber transceiver manufacturer’s recommendations for termination circuitry.
Figure 25
shows a typical example of an LXT971A-to-3.3 V fiber transceiver interface.
The following occurs in 5 V fiber transceiver applications as shown in
Figure 26
:
The transmit pair should be AC-coupled and re-biased to 5 V PECL input levels
The receive pair should be AC-coupled with an emitter current path for the fiber transceiver
and re-biased to 3.3 V LVPECL input levels.
The signal detect pin on a 5 V fiber transceiver interface should use the logic translator circuitry as
shown in
Figure 27
. Refer to the fiber transceiver manufacturer’s recommendations for termination
circuitry.
Figure 26
shows a typical example of an LXT971A-to-5 V fiber transceiver interface,
while
Figure 27
shows the interface circuitry for the logic translator.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LXT972A | 3.3V Dual-Speed Fast Ethernet Transceiver Datasheet |
| LXT972ALC | 3.3V Dual-Speed Fast Ethernet Transceiver Datasheet |
| LXT972M | Single-Port 10/100 Mbps PHY Transceiver |
| LXT9763 | Fast Ethernet 10/100 Hex Transceiver with Full MII |
| LXT9763HC | LAN TRANSCEIVER|HEX|QFP|208PIN|PLASTIC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LXT971ABC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LAN TRANSCEIVER|SINGLE|CMOS|BGA|64PIN|PLASTIC |
| LXT971ABE | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:3.3V Dual-Speed Fast Ethernet PHY Transceiver |
| LXT971ALC | 制造商:Intel 功能描述:LAN Transceiver, Single, 64 Pin, Plastic, QFP 制造商:Intellon Corporation 功能描述:LAN Transceiver, Single, 64 Pin, Plastic, QFP 制造商:Level One 功能描述:LAN Transceiver, Single, 64 Pin, Plastic, QFP |
| LXT971ALE | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:3.3V Dual-Speed Fast Ethernet PHY Transceiver |
| LXT971LC | 制造商:Intel 功能描述: |
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