- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄369872 > LU3X34FTR-HS128-DB Quad 3 V 10/100 Ethernet Transceiver TX/FX PDF資料下載
參數(shù)資料
| 型號(hào)： | LU3X34FTR-HS128-DB |
| 英文描述： | Quad 3 V 10/100 Ethernet Transceiver TX/FX |
| 中文描述： | 四3伏10/100以太網(wǎng)收發(fā)器德克薩斯州/外匯 |
| 文件頁數(shù)： | 24/52頁 |
| 文件大?。?/td> | 678K |
| 代理商： | LU3X34FTR-HS128-DB |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁當(dāng)前第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁
24
Lucent Technologies Inc.
LU3X34FTR
Quad 3 V 10/100 Ethernet Transceiver TX/FX
Preliminary Data Sheet
July 2000
Functional Description
(continued)
Far-End Fault Indication
Autonegotiation provides a mechanism for transferring
information from the local station to the link partner that
a remote fault has occurred for 100Base-TX. As auto-
negotiation is not currently specified for operation over
fiber, the far-end fault indication function (FEFI) pro-
vides this capability for 100Base-FX applications.
A remote fault is an error in the link that one station can
detect while the other cannot. An example of this is a
disconnected wire at a station’s transmitter. This station
will be receiving valid data and detect that the link is
good via the link integrity monitor, but will not be able to
detect that its transmission is not propagating to the
other station.
A 100Base-FX station that detects such a remote fault
may modify its transmitted idle stream from all ones to
a group of 84 ones followed by a single 0. This is
referred to as the FEFI idle pattern.
The FEFI function is controlled by bit 11 of register 18h.
It is initialized to 1 (enabled) if the FOSEL pin is at logic
high level during powerup or reset. If the FEFI function
is enabled, the LU3X34FTR will halt all current opera-
tions and transmit the FEFI idle pattern when FOSD
signal is deasserted following a good link indication
from the link integrity monitor. FOSD signal is gener-
ated internally from the FORX
±
circuit. Transmission of
the FEFI idle pattern will continue until FORX
±
signal is
asserted. If three or more FEFI idle patterns are
detected by the LU3X34FTR, then bit 4 of the basic
mode status register (address 01h) is set to one until
read by management. Additionally, upon detection of
far-end fault, all receive and transmit MII activity is dis-
abled/ignored.
100Base-TX Transceiver
LU3X34FTR implements a TP-PMD compliant trans-
ceiver for 100Base-TX operation. The differential trans-
mit driver is shared by the 10Base-T and 100Base-TX
subsystems. This arrangement results in one device
that uses the same external magnetics for both the
10Base-T and the 100Base-TX transmission with sim-
ple RC component connections. The individually wave-
shaped 10Base-T and 100Base-TX transmit signals
are multiplexed in the transmit output driver section.
Transmit Drivers
The LU3X34FTR 100Base-TX transmit driver imple-
ments MLT-3 translation and wave-shaping functions.
The rise/fall time of the output signal is closely con-
trolled to conform to the target range specified in the
ANSI TP-PMD standard.
Twisted-Pair Receiver
For 100Base-TX operation, the incoming signal is
detected by the on-chip twisted-pair receiver that com-
prises the differential line receiver, an adaptive equal-
izer, and baseline wander compensation circuits.
The LU3X34FTR uses an adaptive equalizer which
changes filter frequency response in accordance with
cable length. The cable length is estimated based on
the incoming signal strength. The equalizer tunes itself
automatically for any cable length to compensate for
the amplitude and phase distortions incurred from the
cable.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LU3X34FTR | Quad 3 V 10/100 Ethernet Transceiver(四通道10M位/秒和100 M位/秒以太網(wǎng)收發(fā)器) |
| LU3X54FT | QUAD-FET (Fast Ethernet Transceiver) for 10Base-T/100Base-TX/FX |
| LU3X54FTL | QUAD-FET for 10Base-T/100Base-TX/FX |
| LU3X54FTL-HS208-DB | QUAD-FET for 10Base-T/100Base-TX/FX |
| LU3X54FT | Quad-FET (Fast Ethernet Transceiver) for 10Base-T/100Base-TX/FX(應(yīng)用于10基數(shù)-T和100基數(shù)-TX/FX的四快速以太網(wǎng)收發(fā)器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LU3X54FT | 制造商:AGERE 制造商全稱:AGERE 功能描述:QUAD-FET (Fast Ethernet Transceiver) for 10Base-T/100Base-TX/FX |
| LU3X54FTL | 制造商:AGERE 制造商全稱:AGERE 功能描述:QUAD-FET for 10Base-T/100Base-TX/FX |
| LU3X54FTLHS208 | 制造商:Alcatel-Lucent 功能描述:3X54FTLHS208 |
| LU3X54FTL-HS208-DB | 制造商:AGERE 制造商全稱:AGERE 功能描述:QUAD-FET for 10Base-T/100Base-TX/FX |
| LU3X54FTLHS208-DB | 制造商:Alcatel-Lucent 功能描述:3X54FTLHS208-DB |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。