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XRT75R12IB Datasheet(PDF) 11 Page - Exar Corporation |
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XRT75R12IB Datasheet(HTML) 11 Page - Exar Corporation |
11 / 90 page XRT75R12 8 REV. 1.0.3 TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR RECEIVE LINE SIDE PINS PIN # SIGNAL NAME TYPE DESCRIPTION B22 AE22 B18 AE18 A14 AF14 D13 AC13 B9 AE9 B5 AE5 RTip0 RTip1 RTip2 RTip3 RTip4 RTip5 RTip6 RTip7 RTip8 RTip9 RTip10 RTip11 I Receive TIP Input These input pins along with the corresponding RRing_n input pin function as the Receive DS3/E3/STS-1 Line input signal for a given channel of the XRT75R12. Cconnect this signal and the corresponding RRING_n input signal to a 1:1 transformer. Whenever the RTIP/RRING input pins are receiving a positive-polarity pulse within the incoming DS3, E3 or STS-1 line signal, this input pin will be pulsed to a higher voltage than its corresponding RRING_n input pin. Conversely, whenever the RTIP/RRING input pins are receiving a negative- polarity pulse within the incoming DS3, E3 or STS-1 line signal, this input pin will be pulsed to a lower voltage than its corresponding RRING_n input pin. C22 AD22 C18 AD18 B14 AE14 C13 AD13 C9 AD9 C5 AD5 RRing0 RRing1 RRing2 RRing3 RRing4 RRing5 RRing6 RRing7 RRing8 RRing9 RRing10 RRing11 I Receive Ring Input These input pins along with the corresponding RTIP_n input pin function as the Receive DS3/E3/STS-1 Line input signal for a given channel of the XRT75R12. Connect this signal and the corresponding RTIP_n input signal to a 1:1 trans- former. (See Figure 6) Whenever the RTIP/RRING input pins are receiving a positive-polarity pulse within the incoming DS3, E3 or STS-1 line signal, then this input pin will be pulsed to a lower voltage than its corresponding RTIP_n input pin. Conversely, whenever the RTIP/RRING input pins are receiving a negative- polarity pulse within the incoming DS3, E3 or STS-1 line signal, then this input pin will be pulsed to a higher voltage than its corresponding RTIP_n input pin. |
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