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參數(shù)資料
| 型號： | AM7968-175DC |
| 廠商： | ADVANCED MICRO DEVICES INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | TAXIchip Integrated Circuits(Transparent Asynchronous Xmitter-Receiver Interface) |
| 中文描述： | LINE DRIVER, CDIP28 |
| 封裝： | CERAMIC, DIP-28 |
| 文件頁數(shù)： | 71/127頁 |
| 文件大?。?/td> | 730K |
| 代理商： | AM7968-175DC |
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AMD
67
TAXIchip Integrated Circuits Technical Manual
For DC-coupled interconnections in which the distance between the TAXIchip set and
the optical module is less than 3
″
, transmission line terminations are not necessary. All
that is required is the appropriate ECL pull-down as shown in Figure 5-7
(1)
. On these
short line lengths, elimination of line reflections is not critical. However, without any
increase in complexity or power consumption, line reflections can be reduced simply by
locating the pull-down resistor, R
E
, at the end of the line instead of at the beginning. This
reduces the reflection coefficient at the end of the line, and therefore, reducing the
magnitude of the reflections.
Figure 5-7
DC-Coupled T AX l-Fiber Optic Interfac e (Unterminated)
+5 V
12330E-14
TAXI
TX
+
–
ODL
TX
+
–
RE
RE
L < 3
″
, Z
0
186
≤
RE
≤
7.2 (Z
0
)
TAXI
RX
+
–
ODL
RX
+
–
L < 3
″
, Z
0
+5 V
RE
RE
Optical Fiber
Note:
If the DC-coupled interconnection is longer than 3
″
, transmission line terminations are necessary. For this
case, the suggested configuration is shown in Figure 5-8. Note that the line termination network also provides
the desired pull-down to V
CC
– 2 V, sufficiently below the output LOW level of V
CC
– 1.8 V
Figure 5-8
DC-Coupled T AX l-Fiber Optic Interfac e
+5 V
12330E-15
TAXI
TX
+
–
ODL
TX
+
–
R2
R2
L>3
″
, Z0
TAXI
RX
+
–
ODL
RX
+
–
+5 V
R2
R2
Optical Fiber
R1
R1
R1
R1
R1R2
R1+ R2= Z0
5R2
R1+ R2= 3 V
Note:
If the optical and TAXI power and ground planes are decoupled as shown in Chapter 6, AC coupling is always
recommended to allow for variations in power and ground plane voltages. AC coupling is discussed in
Section 5.5.2.
L>3
″
, Z0
(1)
Adequate bypass capacitors have been omitted from this and the following figures to simplify the drawings.
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PDF描述 |
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| Am7968-175DMC | TAXIchip Integrated Circuits(Transparent Asynchronous Xmitter-Receiver Interface) |
| Am7968-175LMC | TAXIchip Integrated Circuits(Transparent Asynchronous Xmitter-Receiver Interface) |
| Am7969 | TAXIchip Integrated Circuits(Transparent Asynchronous Xmitter-Receiver Interface) |
| Am7968-125DKC | TAXIchip Integrated Circuits(Transparent Asynchronous Xmitter-Receiver Interface) |
| Am7969-125DKC | TAXIchip Integrated Circuits(Transparent Asynchronous Xmitter-Receiver Interface) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM7968-175DCB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Transmitter |
| AM7968-175DKC | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:TAXIchip Integrated Circuits(Transparent Asynchronous Xmitter-Receiver Interface) |
| AM7968-175DMC | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:TAXIchip Integrated Circuits(Transparent Asynchronous Xmitter-Receiver Interface) |
| AM7968-175JC | 制造商:Rochester Electronics LLC 功能描述: |
| AM7968-175JC-G | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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