XRT82D20IW Exar Corporation, XRT82D20IW Datasheet - Page 16

• Manufacturer Part Number: XRT82D20IW
• Description: IC LIU EI SGL 28SOJ
• Manufacturer: Exar Corporation

Specifications of XRT82D20IW

• Product: Framer
• Lead Free Status / RoHS Status: Contains lead / RoHS Compliant

XRT82D20
SINGLE CHANNEL E1 LINE INTERFACE UNIT
ITU-T G.703 specifies that the E1 line signal can be transmitted over coaxial cable and terminated with 75
transmitted over twisted-pair and terminated with 120
In both applications (e.g., 75
manner as depicted in
F
3.3V
1.4
IGURE
R Load
75 Ω
OPERATION ONLY
Source
Signal
75 Ω
10. I
Interfacing the Transmit Section of the XRT82D20 to the Line
LLUSTRATION OF HOW TO INTERFACE THE
75 Ω Coax
75 Ω Coax
Figure 10
Ω
or 120
and
2 : 1
1 : 2
Figure
Ω
, the user is advised to interface the Transmitter to the Line, in the
11, respectively.
9.1 Ω
9.1 Ω
270 Ω
270 Ω
XRT82D20
Ω
15
.
RRING
TRING
RTIP
TTIP
Rxx Input
Tx Output
TO THE
L
INE FOR
RPOS/RData
TNEG/CODE
TPOS/TData
RNEG/LCV
75 O
TxLEV
AGND
AVDD
TGND
TVDD
RClk
TClk
HM
10µF
A
PPLICATIONS AND
REV. 1.0.8
0.1 µF
+3.3 V
Ω
or