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參數(shù)資料
| 型號(hào)： | MT8910-1AP |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | CMOS ST-BUS⑩ FAMILY Digital Subscriber Line Interface Circuit |
| 中文描述： | 意法半導(dǎo)體的CMOS總線⑩家庭數(shù)字用戶線接口電路 |
| 文件頁數(shù)： | 20/26頁 |
| 文件大?。?/td> | 419K |
| 代理商： | MT8910-1AP |
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MT8910-1
Preliminary Information
9-22
Figure 12 - Typical Connections for NT Mode (Single Port)
22
24
2
28
27
1
25
26
9
23
11
10
20
19
17
18
16
6
8
12
13
14
4
15
5
21
7
3
10.24 MHz
Xtal
33pF
33pF
CLOCKS
PCM OR
DATA
V
DD
System Reset
TO DC-DC
CONVERTER
1.5
μ
F
M
H
8
9
1
0
1
PLT
V
DD
0.1
μ
F
1
μ
F
0.1
μ
F
1
μ
F
1.0
μ
F
1.0
μ
F
VDD
AVDD
Lout+
Lin+
Lin-
Lout-
VBias
VRef
CDSTo
IC
TSTout
F0od
OSC1
OSC2
C4b
F0b
SFb
DSTi
DSTo
MS0
MS1
NT/LT
TSTin
TSTen
CDSTi
MRST
VSS
AVSS
MT8910-1
Passive Line Termination Network (PLT)
The termination network is an all passive circuit
which allows the MT8910-1 to interface to the DSL
line through a line pulse transformer. The passive
line termination consists of three blocks which
includes a hybrid network, a compensator circuit and
a line pulse transformer (refer to Figures 13 and 14).
The hybrid network is a 2 to 4 wire converter which
provides limited precancellation of near end echo.
The hybrid specified in Figure 13 was optimized for
the specified transformer and a 10 ohm series
protection resistor (Rp).
The compensator circuit, in conjunction with the
transformer, acts as a high pass filter which is
designed to increase the cut-off frequency in the
receiver path. This has the effect of reducing the low
frequency content in the received line signal which in
turn reduces the effects of ISI and near end echo
thereby improving transceiver performance.
The low inductance transformer allows for the
possibility of passing a sealing current and/or
phantom feed supply through the secondary winding
without saturating the magnetic core. The
transformer specified in Figure 14 has been
designed to carry typically 50 mA of DC current.
Transformer Specification
All subscriber equipment which is to be connected to
a digital subscriber line, must deliver an output pulse
which satisfies both the pulse template and the pulse
PSD as specified earlier. The output drive
characteristics
of
the
transformer with a turns ratio of 1:1.3 having the
electrical characteristics specified in Figure 14.
MT8910-1
requires
a
For
Semiconductor has made available the MB6024
Magnetic Kit which contains the transformer shown
in Fig. 14.
supporting initial design activities,
Mitel
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MT8920 | ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Access Circuit |
| MT8920B | ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Access Circuit |
| MT8920B-1 | ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Access Circuit |
| MT8920BC | ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Access Circuit |
| MT8920BE | ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Access Circuit |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT8920 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Access Circuit |
| MT8920AE | 制造商:Mitel Networks Corporation 功能描述: |
| MT8920B | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Access Circuit |
| MT8920B-1 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Access Circuit |
| MT8920BC | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Access Circuit |
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