參數(shù)資料
型號: WJLXT972MLC.A4SE000
廠商: CORTINA SYSTEMS INC
元件分類: 網(wǎng)絡(luò)接口
英文描述: DATACOM, ETHERNET TRANSCEIVER, PQFP48
封裝: LEAD FREE, LQFP-48
文件頁數(shù): 57/94頁
文件大小: 1235K
代理商: WJLXT972MLC.A4SE000
Intel
LXT972M Single-Port 10/100 Mbps PHY Transceiver
60
Document Number: 302875-004
Revision Date: February 18, 2005
Figure 20 shows the LXT972M Transceiver in a typical twisted-pair interface, with the RJ-45
connections crossed over for a Switch configuration.
Figure 20. Intel
LXT972M Transceiver Typical Twisted-Pair Interface - Switch
1. Center tap current may be supplied from 3.3 V VCCA as shown. Additional power savings may be
realized by supplying the center tap from a 2.5 V current source. A separate ferrite bead (rated at 50
mA) should be used to supply center tap current.
2. The 100
transmit load termination resistor typically required is integrated in the LXT972M
Transceiver.
3. Magnetics without a receive pair center-tap do not require a 2 kV termination.
4. RJ-45 connections shown are for a standard switch application. For a standard NIC RJ-45 setup,
TPIP
TPIN
RJ-45
* = 0.001
F / 2.0 kV
T
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T
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is
te
d
-Pa
ir
N
e
tw
o
rk
3
6
1
2
1:1
Intel
LXT972M
Transceiver
50
50
50
50
50
50
4
5
8
7
1:1
1
TPOP
TPON
VCCA
GND
0.1
F
.01
F
2
270 pF 5%
0.01
F
50
1%
50
1%
**
3
4
0.1
F
B3515-02
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