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參數(shù)資料
| 型號(hào)： | AM79C985KCW |
| 廠商： | ADVANCED MICRO DEVICES INC |
| 元件分類： | 網(wǎng)絡(luò)接口 |
| 英文描述： | enhanced Integrated Multiport Repeater Plus (eIMR+⑩) |
| 中文描述： | DATACOM, ETHERNET TRANSCEIVER, PQFP100 |
| 封裝： | PLASTIC, QFP-100 |
| 文件頁數(shù)： | 31/48頁 |
| 文件大?。?/td> | 260K |
| 代理商： | AM79C985KCW |
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Am79C985
31
P R E L I M I N A R Y
SYSTEMS APPLICATIONS
eIMR+ to TP Port Connection
The eIMR+ device provides a system solution
to designing non-managed multiport repeaters. The
eIMR+ device connects directly to AC coupling mod-
ules for a 10BASE-T hub. Figure 9 shows the simpli-
fied connection.
Twisted Pair Transmitters
TXD signals need to be properly terminated to meet the
electrical requirement for 10BASE-T transmitters.
Proper termination is shown in Figure 10 which consists
of a 110-
twisted-pair cable that meets IEEE 802.3, Section 14.4
specifications. The cable is terminated at the opposite
end by 100
.
Twisted Pair Receivers
RXD signals need to be properly terminated to meet
the electrical requirements for 10BASE-T receivers.
Proper termination is shown in Figure 11. Note that the
receivers do not require external filter modules.
resistor and a 1:1 transformer. The load is a
Figure 9.
Simplified 10BASE-T Connection
Figure 10.
TXD Termination
110
100
110
100
110
100
110
100
TP Connector
TP Connector
TP Connector
TP Connector
eIMR+
TXD0+
TXD0–
RXD0+
RXD0–
TXD1+
TXD1–
RXD1+
RXD1–
TXD2+
TXD2–
RXD2+
RXD2–
TXD3+
TXD3–
RXD3+
RXD3–
RST
CLK
1:1
1:1
1:1
1:1
1:1
1:1
1:1
1:1
20651B-14
20651B-15
1:1
Twisted Pair
100
110
TXD+
TXD-
20650A-13
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相關(guān)代理商/技術(shù)參數(shù) |
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