E1 PCM30/ISDN-PRI transceiver

CS21354/CS21554 is an E1 PCM30/ISDN-PRI transceiver, the single-chip integrates the LIU and E1 Framer. The device fully meets the ITU-T specifications, including G.703, G.704, G.706, and G.823. The on-chip clock/data recovery circuit in the receive path converts the AMI/HDB3 E1 signal to a NRZ serial E1 stream. The receive sensitivity is -12dB, which meets the short distance transmission from 0 to 500m. The transmit path can generate the G.703 waveforms for both 75-ohm COAX and 120-ohm twisted cables. The jitter attenuator can be placed in either transmit or receive paths, the restraint for the jitter meets the specification G.823 and G.705. The framer locates the frame and multi-frame and monitors the data stream for alarms. The CS21354/CS21554 is also used for extracting and inserting signaling data, Si and Sa bits. The working mode is configured by registers. The CS21354/CS21544 provides HDLC and IBO. Features The LIU receive path recovers the data and clock, decodes HDB3, and attenuates the cl...

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