參數(shù)資料
型號: 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,4月2日
文件頁數(shù): 80/118頁
文件大?。?/td> 890K
代理商: L84225
80 of 118
April, 2002
L84225 Quad 100BaseTX/FX/10BaseT Phys. Layer Device - Technical Manual
Copyright 1999-2002 by LSI Logic Corporation. All rights reserved.
52.3-Ohm resistor to ground, providing a voltage divider function at the
junction of the pair. The junction of these two resistors should be
connected to the FXIP/FXIN and SD_[3:0]/FXEN_[3:0] inputs of the
L84225. This will provide a High PECL logic level of 2.36V and a low of
1.92V, which is sufficient for operation of the L84225. An interface
suitable for operation with 5V fiber transceiver modules is shown below
in
Figure 14
.
Figure 14
FX Interface to 5V Fiber Modules
4.6 MII Controller Interface
4.6.1 General
The MII controller interface allows the L84225 to connect to any external
Ethernet controller without any glue logic, provided that the external
Ethernet controller has an MII interface that complies with IEEE 802.3 as
shown in
Figure 11
and
Figure 12
.
FXIP
FXIN
FXOP
FXON
5V
Fiber
Transceiver
TD
TD-
61.9
261
RD
RD-
82.5
52.3
SD
82.5
VDD = 5V
L84220
10/100 TX/FX
Transceiver
SD/FXEN
SD_THR
73.2
VDD = 3.3V
3.3V
VDD=5V
15K
10K
73.2
52.3
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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L8446-41 制造商:HAMAMATSU 制造商全稱:Hamamatsu Corporation 功能描述:CW LASER DIODES