XRT59L921IB Exar Corporation, XRT59L921IB Datasheet - Page 7

• Manufacturer Part Number: XRT59L921IB
• Description: 21 CHANNEL E1 LIU
• Manufacturer: Exar Corporation

Specifications of XRT59L921IB

• Lead Free Status / RoHS Status: Contains lead / RoHS Compliant

PIN DESCRIPTIONS
REV. 1.2.1
P
U19
N19
H19
G19
D19
T19
P19
K19
E19
V11
L19
G2
C1
D2
E2
H2
K2
N2
P2
T2
U2
L2
IN
#
RRing_10
RRing_12
RRing_13
RRing_14
RRing_15
RRing_16
RRing_17
RRing_18
RRing_19
RRing_20
RRing_11
RRing_0
RRing_1
RRing_2
RRing_3
RRing_4
RRing_5
RRing_6
RRing_7
RRing_8
RRing_9
S
TxON
YMBOL
T
YPE
I
I
Receiver Negative Bipolar Input – Channel_n:
The Receive Section of Channel_n uses this input pin, along with RTIP_n to receive
the bipolar line signal from the Remote E1 Terminal.
Transmit ON/OFF Input:
Upon power up, all of the transmitters are powered off. If the TxON pin is pulled
"High" all 21 transmitters are powered on. Individual Channels can be powered
down by connecting TxClk_n "Low" and with TPOS_n/TNEG_n data applied to that
Channel_n.
N
OTE
: Internally pulled "Low" with a 50k
TWENTY-ONE CHANNEL E1 LINE INTERFACE UNIT
5
D
ESCRIPTION
Ω
resistor.
XRT59L921