參數(shù)資料
型號(hào)： LU3X34FT
廠商： Lineage Power
英文描述： Quad 3 V 10/100 Ethernet Transceiver TX/FX(四3 V 10/100以太網(wǎng)收發(fā)器)
中文描述： 四3伏10/100以太網(wǎng)收發(fā)器德克薩斯州/外匯（四3伏10/100以太網(wǎng)收發(fā)器）
文件頁(yè)數(shù)： 17/48頁(yè)
文件大小： 720K
代理商： LU3X34FT
Lucent Technologies Inc.
17
Advance Data Sheet
June 1999
LU3X34FT
Quad 3 V 10/100 Ethernet Transceiver TX/FX
Functional Description
(continued)
The carrier sense function is independent of symbol
alignment. CRS is asserted during either packet trans-
mission or reception. When the IDLE symbol pair is
detected in the receive data stream, CRS is deas-
serted. CRS is intended to encapsulate RXDV.
Bad SSD Detection
A bad start-of-stream delimiter (bad SSD) is an error
condition that occurs in the 100Base-X receiver if car-
rier is detected (CRS asserted) and a valid /J/K set of
code-groups (SSD) is not received.
If this condition is detected, then the LU3X34FT will
assert RXER and present RXD[3:0] = 1110 to the MII
for the cycles that correspond to received 5B code-
groups until at least two IDLE code groups are
detected. In addition, the false carrier counter (address
13h) will be incremented by one. Once at least two
IDLE code-groups are detected, RXER and CRS
become deasserted.
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 autonegotiation is not
currently specified for operation over fiber, the far-end
fault indication function (FEFI) provides 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 LU3X34FT 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 LU3X34FT, 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
LU3X34FT 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 LU3X34FT 100Base-TX trans-
mit driver implements MLT-3 translation and wave-
shaping functions. The rise/fall time of the output signal
is closely controlled 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 comprises the differential line
receiver, an adaptive equalizer and baseline wander
compensation circuits.
The LU3X34FT 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.
10Base-T Module
The 10Base-T transceiver module is IEEE802.3 com-
pliant. It includes the receiver, transmitter, collision,
heartbeat, loopback, jabber, waveshaper, and link
integrity functions, as defined in the standard. Figure 4
provides an overview for the 10Base-T module.
The LU3X34FT 10Base-T module is comprised of the
following functional blocks:
I
Manchester encoder and decoder
I
Collision detector
I
Link test function
I
Transmit driver and receiver
I
Serial and parallel interface
I
Jabber & SQE test functions
I
Polarity detection and correction
相關(guān)PDF資料
PDF描述
LU3X51FT-J80 Single-Port 3V 10/100 Ethernet TransceiverTX/FX(單端口3V 10/100以太網(wǎng)收發(fā)器)
LU3X54FTL Quad-FET 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)
LU5X31F Gigabit Ethernet Transceiver(千兆位以太網(wǎng)收發(fā)器)
LUC4AB01 ATM Buffer Manager (ABM)(ATM緩沖管理器 (ABM))
LUC4AC01 ATM Crossbar Element (ACE)(ATM縱橫元件（ACE）)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LU3X34FTR 制造商:AGERE 制造商全稱:AGERE 功能描述:Quad 3 V 10/100 Ethernet Transceiver TX/FX
LU3X34FTR-HS128-DB 制造商:AGERE 制造商全稱:AGERE 功能描述:Quad 3 V 10/100 Ethernet Transceiver TX/FX
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
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*