MaxLinear, Inc. Interface - Drivers, Receivers, Transceivers XRT91L32IQTR

The XRT91L32IQTR is a fully integrated SONET/SDH transceiver designed for high-speed applications, supporting STS-12/STM-4 at 622.08 Mbps and STS-3/STM-1 at 155.52 Mbps. It features an on-chip Clock Multiplier Unit (CMU) that generates a high-speed transmit clock from a slower external reference, along with a Clock and Data Recovery (CDR) function that can be bypassed for external clock recovery. The device includes serial-to-parallel and parallel-to-serial converters with an 8-bit LVTTL interface, operating at 77.76 Mbps in STS-12/STM-4 mode and 19.44 Mbps in STS-3/STM-1 mode. The transceiver is equipped with diagnostics capabilities such as Loss of Signal (LOS) monitoring and automatic data muting upon LOS detection. It supports various loop-back modes and can synchronize timing with external devices. The XRT91L32IQTR operates at a supply voltage of 3.3V, with typical power dissipation of 660mW in STS-3/STM-1 mode and 800mW in STS-12/STM-4 mode. It is packaged in a 100-pin QFP and is suitable for applications in SONET/SDH transmission systems, add/drop multiplexers, and multi-service switches.