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參數(shù)資料
| 型號： | XRT82D20 |
| 廠商： | Exar Corporation |
| 英文描述： | Single Channel E1 Line Interface Unit(單通道E1線接口單元) |
| 中文描述： | 單通道E1線路接口單元（單通道素E1線接口單元） |
| 文件頁數(shù)： | 19/22頁 |
| 文件大?。?/td> | 236K |
| 代理商： | XRT82D20 |
XRT82D20
SINGLE CHANNEL LINE INTERFACE UNIT
á
REV. 1.0.6
18
The user can configure the XRT82D20 to operate in
the Local Loop-Back Mode, by pulling the LLoop input
pin (pin 9) to GND.
2.2
T
HE
R
EMOTE
L
OOP
B
ACK
M
ODE
When the XRT82D20 is configured to operate in the
Remote Loop-Back Mode, the XRT82D20 will ignore
any signals that are input to the TPOS and TNEG in-
put pins. The XRT82D20 will receive the incoming
line signals, via the RTIP and RRing input pins. This
data will be processed through the entire Receive
Section (within the XRT82D20) and will output to the
Receive Terminal Equipment via the RPOS and
RNEG output pins. Additionally, this data will also be
internally looped back to the Transmit Input Interface
block within the Transmit Section. At this point, this
data will be routed through the remainder of the
Transmit Section of the XRT82D20 and will be trans-
mitted out onto the line via the TTIP and TRing output
pins.
Figure 15, illustrates the path that the data takes
(within the XRT82D20) when the chip is configured to
operate in the Remote Loop-Back Mode.
F
IGURE
14. I
LLUSTRATION
OF
THE
A
NALOG
L
OCAL
L
OOP
-B
ACK
WITHIN
THE
XRT82D20
HDB3
Encoder
Peak
Detector
Local
Loopback
LOS
Detect
Data
Slicer
Data &
Timing
Recovery
HDB3
Decoder
Tx Pulse
Shaper
MUX
MUX
Line
Driver
TClk
TPOS
TNEG
RClk
RPOS
RNEG
TTIP
TRing
RLOS
RTIP
RRing
MClk
Timing
Generator
Jitter Attenuator
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| XRT82L38 | Octal E1/T1/J1 Line Transceiver with Clock Recovery and Jitter Attenuator(八 T1/E1/J1線收發(fā)器（帶時鐘恢復和振蕩衰減器）) |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT82D20_06 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE CHANNEL E1 LINE INTERFACE UNIT |
| XRT82D20ES | 功能描述:外圍驅(qū)動器與原件 - PCI 1 CH E1 LIU RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| XRT82D20IW | 功能描述:網(wǎng)絡控制器與處理器 IC Single Ch E1 LIU RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| XRT82D20IW-F | 功能描述:網(wǎng)絡控制器與處理器 IC Single Ch; 3.3V-5V temp -45 to 85C RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| XRT82D20IW-F | 制造商:Exar Corporation 功能描述:T1/E1 LIU IC |
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