XRT75L03 Datasheet, PDF (20/92 Pages) Exar Corporation – THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR

XRT75L03
REV. 1.0.4
THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
RECEIVE LINE SIDE PINS
PIN #
79
91
88
SIGNAL NAME
RTIP_0
RTIP_1
RTIP_2
TYPE
I
78
RRing_0
I
92
RRing_1
87
RRing_2
DESCRIPTION
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
XRT75L03.
Cconnect this signal and the corresponding RRING_n input signal to a 1:1
transformer.
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.
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
XRT75L03.
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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