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| XRT59L921 Datasheet, PDF (5/32 Pages) Exar Corporation – TWENTY-ONE CHANNEL E1 LINE INTERFACE UNIT | |||
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REV. 1.2.1
XRT59L921
TWENTY-ONE CHANNEL E1 LINE INTERFACE UNIT
PIN DESCRIPTIONS
PIN#
SYMBOL
D8
RxPOS_0
C9
RxPOS_1
D9
RxPOS_2
A10
RxPOS_3
C11
RxPOS_4
A12
RxPOS_5
V10
RxPOS_6
Y9
RxPOS_7
U9
RxPOS_8
V8
RxPOS_9
U7
RxPOS_10
U14 RxPOS_11
Y14 RxPOS_12
V12 RxPOS_13
Y12 RxPOS_14
Y11 RxPOS_15
B13 RxPOS_16
D13 RxPOS_17
C14 RxPOS_18
B14 RxPOS_19
A15 RxPOS_20
E7
C8
E9
B9
C10
B11
V9
W8
T9
U8
T7
T14
W14
V13
W12
W10
C12
E13
D14
C15
A14
RxNEG_0
RxNEG_1
RxNEG_2
RxNEG_3
RxNEG_4
RxNEG_5
RxNEG_6
RxNEG_7
RxNEG_8
RxNEG_9
RxNEG_10
RxNEG_11
RxNEG_12
RxNEG_13
RxNEG_14
RxNEG_15
RxNEG_16
RxNEG_17
RxNEG_18
RxNEG_19
RxNEG_20
TYPE
O
DESCRIPTION
Receiver Positive Data Out â Channel_n: (n=0 to 20)
This output pin will pulse âHighâ whenever Channel_n, within the XRT59L921 has
received a Positive Polarity pulse, in the incoming line signal, at RTIP_n/RRing_n
inputs.
O Receiver Negative Data Out â Channel_n:
This output pin will pulse âHighâ whenever Channel_n, within the XRT59L921 has
received a Negative Polarity pulse, in the incoming line signal, at RTIP_n/RRing_n
inputs.
3
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