Patent ID: 7554466

Claim:
A multi-speed serializer/de-serializer transceiver for use in a point-to-multipoint network having a first optical network unit transmitting at a first speed and a second optical network unit transmitting at a second speed different from the first speed, comprising: a clock recovery module that is configurable in real time to operate in a first mode capable of locking onto an incoming embedded clock within a received signal generated by the first optical network unit at the first speed, and in a second mode capable of locking onto an incoming embedded clock within a received signal generated by the second optical network unit at the second speed; and configuration registers that store a first parameter for the configuration of a clock multiplier/divider at a first value for use by said clock recovery module in said first mode and a second parameter for the configuration of said clock multiplier/divider at a second value for use by said clock recovery module in said second mode, wherein a configuration of said clock multiplier/divider for a particular received signal is based on a selection of only one of said first value or said second value, said selection being based on a speed indication of said particular received signal made available to the multi-speed serializer/de-serializer transceiver.