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參數(shù)資料
| 型號： | XR-T7288 |
| 廠商： | Exar Corporation |
| 英文描述： | CEPT1 Line Interface |
| 中文描述： | CEPT1線路接口 |
| 文件頁數(shù)： | 8/24頁 |
| 文件大?。?/td> | 293K |
| 代理商： | XR-T7288 |
XR-T7288
8
Rev. 1.01
SYSTEM DESCRIPTION
The XR-T7288 device is a fully integrated line interface
that requires only two transformers, three input
termination
resistors,
impedance-matching resistors to provide a bidirectional
line interface between a 2.048 Mbits/s CEPT datalink and
terminal equipment. Typical application diagrams are
shown in Figure 3.and Figure 4.for 75
coaxial cable
and 120
shielded twisted-pair operation, respectively.
The circuit is divided into three main blocks: transmit
and
two
output
converter, receive converter, and logic. The transmit and
receive converters process information signals through
the device in the transmit and receive directions,
respectively; the logic is the control and status interface
for the device. Figure 3.and Figure 4.include a
matched-impedance transmit-interface section in order
to match the output impedance of the transmitter to the
line. See Table 1for the G.703/CH-PTT specifications for
transmit-interface return loss.
15.4
Transmit
Output
T2
R2
15.4
TClk
HDB3/TNDATA
TDATA/TPDATA
GNDA
GNDD
XR-T7288
CEPT1
Line
Interface
ZS
V
DD
A
V
DD
D
RClk
VIO/RNDATA
RDATA/RPDATA
Receive
Input
T1
R1
Load
1.36:1
75
Transmitted Data
Matched-impedance
Transmit Interface
270
200
+5V
1
μ
F
270
1:2
RECEIVE DATA
Figure 3. Typical Application Diagram for Coaxial Environment
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XR-T7295E-1EIP | INTEGRATED LINE RECEIVER |
| XRT7295E | INTEGRATED LINE RECEIVER |
| XR-T7295E-1EIW | INTEGRATED LINE RECEIVER |
| XR-T7295E | INTEGRATED LINE RECEIVER |
| XR-T7295IP | DS3/Sonet STS-1 Integrated Line Receiver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT7288IP | 制造商:Exar Corporation 功能描述: 制造商:Exar Corporation 功能描述:DATACOM, PCM TRANSCEIVER, PDIP28 |
| XR-T7288IP | 制造商:EXAR 制造商全稱:EXAR 功能描述:CEPT1 Line Interface |
| XRT7288IW | 制造商:EXAR 制造商全稱:EXAR 功能描述:CEPT1 Line Interface |
| XR-T7288IW | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PCM Transceiver |
| XR-T7295 | 制造商:EXAR 制造商全稱:EXAR 功能描述:DS3/Sonet STS-1 Integrated Line Receiver |
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