XRT59L921 查看數據表（PDF） - Exar Corporation
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XRT59L921 Datasheet PDF : 32 Pages
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XRT59L921
TWENTY-ONE CHANNEL E1 LINE INTERFACE UNIT
PIN DESCRIPTIONS
REV. 1.2.1
PIN#
SYMBOL
TYPE
DESCRIPTION
D7
B8
E8
A9
B10
A11
W9
Y8
T8
V7
T6
T15
Y13
W13
W11
Y10
B12
E14
C13
B15
A13
LOS_0
LOS_1
LOS_2
LOS_3
LOS_4
LOS_5
LOS_6
LOS_7
LOS_8
LOS_9
LOS_10
LOS_11
LOS_12
LOS_13
LOS_14
LOS_15
LOS_16
LOS_17
LOS_18
LOS_19
LOS_20
O Receiver Loss of Signal Output Indicator – Channel_n:
This output pin toggles “High” if Channel_n, within the XRT59L921 has detected a
Loss of Signal condition in the incoming line signal.
B1
RTIP_0
D1
RTIP_1
E1
RTIP_2
G1
RTIP_3
H1
RTIP_4
K1
RTIP_5
L1
RTIP_6
N1
RTIP_7
P1
RTIP_8
T1
RTIP_9
U1
RTIP_10
U20
RTIP_11
T20
RTIP_12
P20
RTIP_13
N20
RTIP_14
L20
RTIP_15
K20
RTIP_16
H20
RTIP_17
G20
RTIP_18
E20
RTIP_19
D20
RTIP_20
I Receiver_n Positive Bipolar Input – Channel_n:
The Receive Section of Channel_n uses this input pin, along with RRing_n to receive
the bipolar line signal from the Remote E1 Terminal.
4
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