XRT59L921 Datasheet, PDF (8/32 Pages) Exar Corporation – TWENTY-ONE CHANNEL E1 LINE INTERFACE UNIT

XRT59L921
TWENTY-ONE CHANNEL E1 LINE INTERFACE UNIT
PIN DESCRIPTIONS
REV. 1.2.1
PIN#
SYMBOL
TYPE
DESCRIPTION
C4
TTIP_0
D5
TTIP_1
F4
TTIP_2
G5
TTIP_3
J4
TTIP_4
K5
TTIP_5
M4
TTIP_6
N5
TTIP_7
R4
TTIP_8
T5
TTIP_9
V4
TTIP_10
V17
TTIP_11
T16
TTIP_12
R17
TTIP_13
N16
TTIP_14-
M17
TTIP_15-
K16
TTIP_16-
J17
TTIP_17
G16
TTIP_18
F17
TTIP_19
D16
TTIP_20
O Transmitter Positive Bipolar Output – Channel_n:
Channel_n within the XRT59L921 will use this pin, along with TRing_n, to transmit a
bipolar line signal, via a 1:2 step-up transformer.
C3
TRing_0
D4
TRing_1
F3
TRing_2
G4
TRing_3
J3
TRing_4
K4
TRing_5
M3
TRing_6
N4
TRing_7
R3
TRing_8
T4
TRing_9
V3
TRing_10
V18
TRing_11
T17
TRing_12
R18
TRing_13
N17
TRing_14
M18
TRing_15
K17
TRing-16
J18
TRing_17
G17
TRing_18
F18
TRing_19
D17
TRing_20
O Transmitter Negative Bipolar Output – Channel_n:
Channel_n within the XRT59L921 will use this pin, along with TTIP_n, to transmit a
bipolar line signal, via a 1:2 step-up transformer.
6