Control system for realizing multiplexing of pin of OLT (optical line terminal) optical module

The invention discloses a control system for achieving multiplexing of a pin of an OLT (optical line terminal) optical module. The control system comprises the OLT optical module and a system main board control unit, wherein the OLT optical module comprises a micro-controller; the system main board control unit and the micro-controller in the OLT optical module are in communication connection, and the multiplexing of an off (TX-Disable) signal of any pin of the OLT optical module and a strength trigger (RSSI-Trigger) signal of received light signal is achieved by changing high and low level states of a state indicating bit in the micro-controller. According to the system, the multiplexing of the off (TX-Disable) signal of any pin of the existing OLT optical module and the strength trigger (RSSI-Trigger) signal of received light signal is flexibly achieved, and flexible use of the optical module is enhanced.