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參數(shù)資料
| 型號(hào)： | XRT81L27IV |
| 廠商： | EXAR CORP |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | SEVEN CHANNEL E1 LINE INTERFACE UNIT WITH CLOCK RECOVERY |
| 中文描述： | DATACOM, PCM TRANSCEIVER, PQFP128 |
| 封裝： | TQFP-128 |
| 文件頁(yè)數(shù)： | 25/30頁(yè) |
| 文件大?。?/td> | 194K |
| 代理商： | XRT81L27IV |
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á
XRT81L27
SEVEN CHANNEL E1 LINE INTERFACE UNIT WITH CLOCK RECOVERY
REV. 1.1.0
23
3.0
The Receive Sections of the XRT81L27 consists of
the following blocks:
The Receive Equalizer block
The Peak Detector and Slicer block
The LOS Detector block
The Receive Output Interface block
3.1
I
NTERFACING
THE
R
ECEIVE
S
ECTIONS
TO
THE
L
INE
The design of each channel (within the XRT81L27)
permits the user to transformer-couple or capacitive-
THE RECEIVE SECTION
couple the Receive Section to the line. Additionally,
as mentioned earlier, the specification documents for
E1 specify 75
termination loads, when transmitting
over coaxial cable, and 120
loads, when transmit-
ting over twisted-pair. Figure 13, Figure 14 and
Figure 15 present the various methods that can be
employ to interface the Receivers (of the XRT81L27)
to the line. The receive circuits of Figure 13,
Figure 14 and Figure 15 differ in the impedance at the
inputs and the line connections.
F
IGURE
12. I
LLUSTRATION
OF
HOW
TO
INTERFACE
THE
T
RANSMIT
S
ECTIONS
OF
THE
XRT81L27
TO
THE
L
INE
(
FOR
75
OR
120
A
PPLICATIONS
)
TPOS_n
TNEG_n
TClk_n
XRT81L27
TTIP_n
TRING_n
9.1
9.1
1:2
Line
Input
75
Coax
120
Twisted
Pair
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XRT81L27 | Seven Channel E1 Line Interface Unit with Clock Recovery(7通道 E1線接口單元（帶時(shí)鐘恢復(fù)）) |
| XRT82D20 | Single Channel E1 Line Interface Unit(單通道E1線接口單元) |
| XRT82L24IV | QUAD E1 LINE TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR |
| XRT82L24 | Quad E1 Line Transceiver with Clock Recovery and Jitter Attenuator(四E1線收發(fā)器（帶時(shí)鐘恢復(fù)和振動(dòng)衰減器）) |
| XRT82L34 | Quad T1/E1/J1 Line Transceiver with Clock Recovery and Jitter Attenuator(四 T1/E1/J1線收發(fā)器（帶時(shí)鐘恢復(fù)和振蕩衰減器）) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT81L27IV-F | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| XR-T8205CP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telephone Ringer |
| XR-T8205P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telephone Ringer |
| XRT82D20 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE CHANNEL E1 LINE INTERFACE UNIT |
| XRT82D20_06 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE CHANNEL E1 LINE INTERFACE UNIT |
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