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XRT75L03IV Datasheet(PDF) 11 Page - Exar Corporation |
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XRT75L03IV Datasheet(HTML) 11 Page - Exar Corporation |
11 / 92 page XRT75L03 THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR REV. 1.0.4 8 TRANSMIT LINE SIDE PINS PIN #SIGNAL NAME TYPE DESCRIPTION 30 11 21 TTIP_0 TTIP_1 TTIP_2 O Transmit TTIP Output - Positive Polarity Signal - Channel 0: Transmit TTIP Output - Positive Polarity Signal - Channel 1: Transmit TTIP Output - Positive Polarity Signal - Channel 2: These output pins along with the corresponding TRING_n output pins, function as the Transmit DS3/E3/STS-1 Line output signal drivers for a given channel, of the XRT75L03. Connect this signal and the corresponding TRING_n output signal to a 1:1 transformer. Whenever the Transmit Section of the Channel generates and transmits a posi- tive-polarity pulse onto the line, this output pin will be pulsed to a "higher-volt- age" than its corresponding TRING_n output pins. Conversely, whenever the Transmit Section of the Channel generates and trans- mit a negative-polarity pulse onto the line, this output pin will be pulsed to a "lower-voltage" than its corresponding TRING_n output pin. NOTE: This output pin will be tri-stated whenever the corresponding TxON_n input pin or bit-field is set to "0". 28 13 19 TRing_0 TRing_1 TRing_2 O Transmit Ring Output - Negative Polarity Signal - Channel 0: Transmit Ring Output - Negative Polarity Signal - Channel 1: Transmit Ring Output - Negative Polarity Signal - Channel 2: These output pins along with the corresponding TTIP_n output pins, function as the Transmit DS3/E3/STS-1 Line output signal drivers for a given channel, within the XRT75L03. Connect this signal and the corresponding TTIP_n output signal to a 1:1 trans- former. Whenever the Transmit Section of the Channel generates and transmits a posi- tive-polarity pulse onto the line. This output pin will be pulsed to a "lower-volt- age" than its corresponding TTIP_n output pins. Conversely, whenever the Transmit Section of the Channel generates and trans- mit a negative-polarity pulse onto the line. This output pin will be pulsed to a "higher-voltage" than its corresponding TTIP_n output pin. NOTE: This output pin will be tri-stated whenever the corresponding TxON_n input pin or bit-field is set to "0". |
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