XRT75R03D_06 Datasheet, PDF (21/135 Pages) Exar Corporation – EXAR DATA SHEET FORMAT TEMPLATES

REV. 1.0.4
XRT75R03D
THREE CHANNEL E3/DS3/STS-1 LINE
RECEIVE LINE SIDE PINS
PIN #
SIGNAL NAME
TYPE
79
RTIP_0
I
91
RTIP_1
88
RTIP_2
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
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.
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.
17