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XRT75R03D Datasheet(PDF) 22 Page - Exar Corporation

Part # XRT75R03D
Description  THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCRONIZER
PDF  134 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XRT75R03D Datasheet(HTML) 22 Page - Exar Corporation

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XRT75R03D
REV. 1.0.2
THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCRONIZER
17
RECEIVE LINE SIDE PINS
PIN #SIGNAL NAME
TYPE
DESCRIPTION
79
91
88
RTIP_0
RTIP_1
RTIP_2
I
Receive TIP Input - Channel 0:
Receive TIP Input - Channel 1:
Receive TIP Input - Channel 2:
These input pins along with the corresponding RRing_n input pin function as the
Receive DS3/E3/STS-1 Line input signal receiver for a given channel of the
XRT75R03D.
Connect this signal and the corresponding RRING_n input signal to a 1:1 trans-
former.
Whenever the RTIP/RRING input pins are receiving a positive-polarity pulse
within the incoming DS3, E3 or STS-1 line signal, then this input pin will be
pulsed to a "higher-voltage" than its corresponding RRING_n input pin.
Conversely, whenever the RTIP/RRING input pins are receiving a negative-
polarity pulse within the incoming DS3, E3 or STS-1 line signal, then this input
pin will be pulsed to a "lower-voltage" than its corresponding RRING_n input
pin.
78
92
87
RRing_0
RRing_1
RRing_2
I
Receive Ring Input - Channel 0:
Receive Ring Input - Channel 1:
Receive Ring Input - Channel 2:
These input pins along with the corresponding RTIP_n input pin function as the
Receive DS3/E3/STS-1 Line input signal receiver for a given channel of the
XRT75R03D.
Connect this signal and the corresponding RTIP_n input signal to a 1:1 trans-
former.
Whenever the RTIP/RRING input pins are receiving a positive-polarity pulse
within the incoming DS3, E3 or STS-1 line signal, then this input pin will be
pulsed to a "lower-voltage" than its corresponding RTIP_n input pin.
Conversely, whenever the RTIP/RRING input pins are receiving a negative-
polarity pulse within the incoming DS3, E3 or STS-1 line signal, then this input
pin will be pulsed to a "higher-voltage" than its corresponding RTIP_n input pin.



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