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DS3150TN Datasheet(PDF) 4 Page - Maxim Integrated Products |
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DS3150TN Datasheet(HTML) 4 Page - Maxim Integrated Products |
4 / 28 page DS3150 4 of 28 1. DETAILED DESCRIPTION The DS3150 performs all the functions necessary for interfacing at the physical layer to DS3, E3, and STS-1 lines. The device has independent receive and transmit paths and a built-in jitter attenuator (Figure 1-1). The receiver performs clock and data recovery from a B3ZS- or HDB3-coded alternate mark inversion (AMI) signal and monitors for loss-of-signal. The receiver optionally performs B3ZS/HDB3 decoding and outputs the recovered data in either NRZ or bipolar format. The transmitter accepts data in either NRZ or bipolar format, optionally performs B3ZS/HDB3 encoding, and drives standards-compliant waveforms onto the outgoing 75Ω coaxial cable. The jitter attenuator can be mapped into the receiver data path, mapped into the transmitter data path, or disabled. The DS3150 conforms to the telecommunication standards listed in Table 1-A. Figure 1-2 shows the external components required for proper operation. Figure 1-1. Block Diagram Analog Loopback Pre Amp Filter/ Equalizer (Analog Loss Of Signal Detect) Clock & Data Recovery Line Driver Wave- Shaping Clock Invert Clock Invert RX+ RX- TX+ TX- TTS PRBS LBO ZCSE ICE TPOS/TNRZ TCLK TNEG TESS RNEG/RLCV RCLK RPOS/RNRZ LOS MCLK RMON Remote Loopback EFE VDD VSS Power Connections Test Functions TDS0 TDS1 B3ZS/ HDB3 Encoder AIS/ 1010.../ PRBS Generation PRBS Detector B3ZS/HDB3 Decoder Digital Loss Of Signal Detector Squelch Driver Monitor Output Decode Loopback Control DM LBKS DS3150 |
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