參數(shù)資料
型號: L80227
廠商: LSI CORP
元件分類: 網(wǎng)絡(luò)接口
英文描述: 10BASE-T/100BASE-TX Ethernet Physical Layer Device (PHY)(10BASE-T/100BASE-TX 以太網(wǎng)物理層處理器)
中文描述: DATACOM, ETHERNET TRANSCEIVER, PQFP64
封裝: LQFP-64
文件頁數(shù): 103/158頁
文件大?。?/td> 1084K
代理商: L80227
Draft 6/5/00
Electrical Characteristics
6-5
Copyright 1999 by LSI Logic Corporation. All rights reserved.
6.2.1 Twisted-Pair DC Characteristics
Unless otherwise noted, all test conditions for TP transmit and receive
operations are as follows:
TA = 0 to + 70 C
V
DD
= 3.3 V 5%
Clock = 25 MHz 0.01%
REXT = 10 K
1%,no load
TPO+/- loading is as shown in
Figure A.1
or equivalent
62.5/10 MHz Square Wave on TP+/- inputs in 100/10 Mbits/s modes
Table 6.3
shows the twisted-pair characteristics for transmit operation.
Table 6.3
Twisted Pair Characteristics (Transmit )
Sym
Parameter
Limit
Unit
Conditions
Min
Typ
Max
T
OV
TP Differential Output
Voltage
0.950
1.000
1.050
V pk
100 Mbits/s, UTP
mode, 100 ohm load
2.2
2.5
2.8
V pk
10 Mbits/s, UTP
mode, 100 ohm load
T
OVS
TP Differential Output
Voltage Symmetry
98
102
%
100 Mbits/s, ratio of
positive and
negative amplitude
peaks on TPO
T
ORF
TP Differential Output
Rise And Fall Time
3.0
5.0
ns
100 Mbits/s
T
ORFS
TP Differential Output
Rise And Fall Time
Symmetry
±
0.5
ns
100 Mbits/s,
difference between
rise and fall times on
TPO
T
ODC
TP Differential Output
Duty Cycle Distortion
±
0.25
ns
100 Mbits/s, output
data =0b 0101...
NRZ pattern
unscrambled,
measure at 50%
points
T
OJ
TP Differential Output
Jitter
±
1.4
ns
100 Mbits/s, output
data = scrambled /H/
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