xrt59l921 Exar Corporation, xrt59l921 Datasheet - Page 6

• Manufacturer Part Number: xrt59l921
• Description: Xrt59l921 -twenty-one Channel E1 Line Interface Unit
• Manufacturer: Exar Corporation

PIN DESCRIPTIONS
XRT59L921
TWENTY-ONE CHANNEL E1 LINE INTERFACE UNIT
P
W13
W11
C13
U20
N20
H20
G20
D20
B10
A11
T15
Y13
Y10
B12
E14
B15
A13
T20
P20
K20
E20
L20
W9
D7
D1
G1
H1
N1
U1
B8
E8
A9
Y8
T8
V7
T6
B1
E1
K1
P1
T1
L1
IN
#
RTIP_10
RTIP_11
RTIP_12
RTIP_13
RTIP_14
RTIP_15
RTIP_16
RTIP_17
RTIP_18
RTIP_19
RTIP_20
LOS_10
LOS_12
LOS_13
LOS_14
LOS_15
LOS_16
LOS_17
LOS_18
LOS_19
LOS_20
S
LOS_11
RTIP_0
RTIP_1
RTIP_2
RTIP_3
RTIP_4
RTIP_5
RTIP_6
RTIP_7
RTIP_8
RTIP_9
LOS_0
LOS_1
LOS_2
LOS_3
LOS_4
LOS_5
LOS_6
LOS_7
LOS_8
LOS_9
YMBOL
T
YPE
O
I
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.
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
D
ESCRIPTION
REV. 1.2.1