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XRT59L921IB Datasheet(PDF) 7 Page - Exar Corporation |
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XRT59L921IB Datasheet(HTML) 7 Page - Exar Corporation |
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7 / 32 page  XRT59L921 5 REV. 1.2.1 TWENTY-ONE CHANNEL E1 LINE INTERFACE UNIT C1 D2 E2 G2 H2 K2 L2 N2 P2 T2 U2 U19 T19 P19 N19 L19 K19 H19 G19 E19 D19 RRing_0 RRing_1 RRing_2 RRing_3 RRing_4 RRing_5 RRing_6 RRing_7 RRing_8 RRing_9 RRing_10 RRing_11 RRing_12 RRing_13 RRing_14 RRing_15 RRing_16 RRing_17 RRing_18 RRing_19 RRing_20 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. V11 TxON I 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. NOTE: Internally pulled "Low" with a 50k Ω resistor. PIN DESCRIPTIONS PIN# SYMBOL TYPE DESCRIPTION |
Similar Part No. - XRT59L921IB |
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Similar Description - XRT59L921IB |
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