參數(shù)資料
型號: XRT81L27IV-F
廠商: Exar Corporation
文件頁數(shù): 18/30頁
文件大?。?/td> 0K
描述: IC LIU EI 7CH 3.3V 128TQFP
標準包裝: 72
應用: DECT
接口: 串行
電源電壓: 3.3V
封裝/外殼: 128-LQFP
供應商設備封裝: 128-TQFP(14x20)
包裝: 托盤
安裝類型: 表面貼裝
á
XRT81L27
SEVEN CHANNEL E1 LINE INTERFACE UNIT WITH CLOCK RECOVERY
REV. 1.1.0
23
3.0
THE RECEIVE SECTION
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
INTERFACING THE RECEIVE SECTIONS TO THE
LINE
The design of each channel (within the XRT81L27)
permits the user to transformer-couple or capacitive-
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.
FIGURE 12. ILLUSTRATION OF HOW TO INTERFACE THE TRANSMIT SECTIONS OF THE XRT81L27 TO THE LINE (FOR
75 OR 120
APPLICATIONS)
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PDF資料
PDF描述
XRT82D20IW-F IC LIU E1 SGL 28SOJ
XRT82L24AIV-F IC LIU E1 QAUD 100TQFP
XRT83D10IW IC LIU T1/E1 SGL 28SOJ
XRT83L30IV-F IC LIU LH/SH T1/E1 SGL 64TQFP
XRT83L314IB-L IC LIU T1/E1/J1 14CH 304TBGA
相關代理商/技術參數(shù)
參數(shù)描述
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
XRT82D20ES 功能描述:外圍驅動器與原件 - 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