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XRT75R12DIB Datasheet(PDF) 11 Page - Exar Corporation |
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XRT75R12DIB Datasheet(HTML) 11 Page - Exar Corporation |
11 / 134 page XRT75R12D 6 REV. 1.0.1 TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER SYSTEM-SIDE RECEIVE OUTPUT AND RECEIVE CONTROL PINS PIN # SIGNAL NAME TYPE DESCRIPTION D25 AD25 G23 AA24 J24 U24 J3 U3 G4 AA3 D2 AD2 RLOS0 RLOS1 RLOS2 RLOS3 RLOS4 RLOS5 RLOS6 RLOS7 RLOS8 RLOS9 RLOS10 RLOS11 O Receive Loss of Signal Output Indicator This output pin indicates Loss of Signal (LOS) Defect condition for the corre- sponding channel. "Low" - Indicates that the corresponding Channel is NOT currently declaring the LOS defect condition. "High" - Indicates that the corresponding Channel is currently declaring the LOS defect condition. G22 AB26 K22 U22 L24 W25 L3 W2 K5 U5 G5 AB1 RLOL0 RLOL1 RLOL2 RLOL3 RLOL4 RLOL5 RLOL6 RLOL7 RLOL8 RLOL9 RLOL10 RLOL11 O Receive Loss of Lock Output Indicator This output pin indicates Loss of Lock (LOL) condition for the corresponding channel. "Low" - Indicates that the corresponding Channel is NOT declaring the LOL condition. "High" - Indicates that the corresponding Channel is currently declaring the LOL condition. NOTE: The Receive Section of a given channel will declare the LOL condition anytime the frequency of the Recovered Clock (RCLK) signal differs from that of the reference clock programmed for that channel by 0.5% or more. E25 AD26 G24 Y24 L22 T22 L5 T5 G3 Y3 E2 AD1 RxPOS0 RxPOS1 RxPOS2 RxPOS3 RxPOS4 RxPOS5 RxPOS6 RxPOS7 RxPOS8 RxPOS9 RxPOS10 RxPOS11 O Receive Positive Data Output The function of these output pins depends upon whether the channel has been configured to operate in the Single-Rail or Dual-Rail Mode. Dual-Rail Mode - Receive Positive Polarity Data Output If the channel has been configured to operate in the Dual-Rail Mode, then all positive-polarity data will be output via this pin. The negative-polarity data will be output via the corresponding RxNEG_n pin. In other words, the Receive Section of the corresponding Channel will pulse this output pin "High" for one period of RCLK_n anytime it receives a positive-polarity pulse via the RTIP/ RRING input pins. The data output via this pin is updated upon the active edge of RxCLK_n output clock signal. Single-Rail Mode - Receive Data Output In the Single-Rail Mode, all Receive (or Recovered) data will be output via this pin. The data output via this pin is updated upon the active edge of RxCLK_n output clock signal. |
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