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參數(shù)資料
| 型號： | LU6612-T64-DB |
| 英文描述： | LU6612 FASTCAT TM Single-FET for 10Base-T/100Base-TX |
| 中文描述： | LU6612 FASTCAT商標單的10BASE-T/100BASE-TX快速以太網(wǎng)場效應管 |
| 文件頁數(shù)： | 23/36頁 |
| 文件大?。?/td> | 528K |
| 代理商： | LU6612-T64-DB |
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Lucent Technologies Inc.
23
Data Sheet
July 2000
LU6612
FASTCAT Single-FET for 10Base-T/100Base-TX
MODE Selection
LU6612 can be forced to operate in specific operating modes. This is achieved by configuring the MODE pins to
the appropriate values at powerup/reset. The strapping options of the MODE pins are latched on reset to set the
default values of various registers. The values can be modified by writing into the registers. The MODE[2:0] pins
have 100 k
internal pull-ups. If MODE[2:0] are left floating, LU6612 will default to all capable, autonegotiation
enabled mode.
The different modes of operation of LU6612 and the register bits affected are presented in the following table.
Table 20. Operation Modes of LU6612
Table 21. LU6612 Crystal Specifications
MODE
[2:0]
Definition
Register.Bit
0.8
0
1
0
1
0
—
0
0
0.10 0.12 0.13
0
0
0
0
0
0
0
0
0
1
—
—
1
0
0
1
4.5
1
1
0
0
0
—
1
1
4.6
0
1
0
0
0
—
1
1
4.8
1
1
1
1
0
—
0
1
000
001
010
011
100
101
110
111
10Base-T, half-duplex with autonegotiation disabled
10Base-T, full-duplex with autonegotiation disabled
100Base-TX, half-duplex with autonegotiation disabled
100Base-TX, full-duplex with autonegotiation disabled
Advertise 100Base-TX, half-duplex autonegotiation enabled
Reserved
Isolate MII
All capable, autonegotiation enabled
0
0
1
1
1
—
1
1
Parameter
Requirement
Type
Frequency
Stability
Shunt Capacitor
Load Capacitor
Series Resistance
Quartz Fundamental Mode
25 MHz
±25 ppm, 0—70 °C
7 pF
20 pF
<30
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