The MS58000 is a highly integrated transceiver chip that meets the requirements of XGS PON applications. The transmitter is equipped with input equalization and output pre emphasis functions, integrated with APC automatic power control, Umpolung and multiple eye diagram plasticity functions, and can collect temperature, voltage, current and other information required for digital diagnosis of DDM. The high sensitivity limiting amplifier at the receiving end integrates AC coupling current and discharge switch to achieve fast burst mode signal detection. The output amplitude is adjustable and supports flexible pulse broadening time settings.