- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄367493 > L84225 L84225 100BaseTX/FX/10BaseT Physical Layer Device technical manual 4/02 PDF資料下載
參數(shù)資料
| 型號(hào)： | L84225 |
| 英文描述： | L84225 100BaseTX/FX/10BaseT Physical Layer Device technical manual 4/02 |
| 中文描述： | L84225 100BaseTX/FX/10BaseT物理層設(shè)備的技術(shù)手冊(cè)，4月2日 |
| 文件頁(yè)數(shù)： | 71/118頁(yè) |
| 文件大?。?/td> | 890K |
| 代理商： | L84225 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)當(dāng)前第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)
Application Information
Copyright 1999-2002 by LSI Logic Corporation. All rights reserved.
71 of 118
April, 2002
type of RJ-45 connector used on the secondary side (line side) of the
transformer. The pinout of these types differ slightly so that traces to the
magnetics may be kept as short and direct as possible.
The "non-stacked" RJ-45 (also referred to as harmonica) is a traditional
horizontally oriented connector consisting of four RJ-45 jacks in a single
in-line assembly.
The newer "stacked" connector consists of a two-over-two configuration
so that four RJ-45 jacks are located in the footprint area of two side-by-
side connectors. This is a significant improvement for higher density
multi-port applications and smaller system form-factors.
The L84225 pin-out has been optimized for connection to transformers
and connectors designed for the higher density stacked configuration.
The Quad Transceiver also operates with non-stacked connectors using
either transformers that map the pin-out to the non-stacked configuration,
or using trace "crossovers" on the PCB layout.
The transformers listed with "non-stacked" pinouts use crossover
connections inside the part to map the stacked pinout of the L84225 to
non-stacked RJ-45 connectors. Crossovers internal to the transformer
are not made in a controlled impedance environment, so this can impact,
somewhat, the cross-talk performance of the system.
For best cross-talk and system performance, it is suggested that stacked
connector and transformer configurations be used. Alternately, non-
stacked connectors may be used with stacked transformer types and the
crossover wiring can be put on the pc board using a ground plane to
reduce impedance mismatch.
The transmit output needs to be terminated with two external termination
resistors in order to meet the output impedance and return loss
requirements of IEEE 802.3. It is recommended that these two external
resistors be connected from VDD to each of the TPOP/N outputs, and
their value should be chosen to provide the correct termination
impedance when looking back through the transformer from the twisted
pair cable, as shown in
Figure 11
. The value of these two external
termination resistors depends on the type of cable driven by the device.
Refer to the Cable Selection Section for more details on choosing the
value of these resistors.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L84302 | L84302 Quad 100/10 Mbps 4-Port Ethernet Controller with RMON/SNMP Management Counters technical manual 4/02 |
| L8560 | Low-Power SLIC with Ringing |
| L8567 | SLIC for Peoples Republic of China Applications |
| L8567-32PLCC | Telecommunication IC |
| L8567-44PLCC | Telecommunication IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L84225/B1 | 制造商:LSI Corporation 功能描述: |
| L8446-04 | 制造商:HAMAMATSU 制造商全稱(chēng):Hamamatsu Corporation 功能描述:CW LASER DIODES |
| L8446-06 | 制造商:HAMAMATSU 制造商全稱(chēng):Hamamatsu Corporation 功能描述:CW LASER DIODES |
| L8446-07 | 制造商:HAMAMATSU 制造商全稱(chēng):Hamamatsu Corporation 功能描述:CW LASER DIODES |
| L8446-41 | 制造商:HAMAMATSU 制造商全稱(chēng):Hamamatsu Corporation 功能描述:CW LASER DIODES |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。