HOTLink® is a point-to-point or point-to-multipoint communications building block allowing the transfer of data over high-speed serial links (fiber, coax, twisted pair, and pcb trace). HOTLink II™ family devices are the second generation of HOTLink technology that offers enhanced levels of integration and faster data rates, while maintaining serial-link compatibility with HOTLink devices. HOTLink II also gives the customer flexibility to have multiple channels on a single chip, thereby saving board space while increasing the throughput of the data being transported.
This application note discusses how to migrate from HOTLink-based designs to HOTLink II-based designs. While most designs can be converted from HOTLink to HOTLink II, applications that use the device at signaling rates of less than 200 Mbaud cannot be migrated. The scope of this application note is limited to device configuration, although some information on device operation is covered as necessary. The Quad HOTLink II Transceiver (CYP15G0401DXB) is used to illustrate how to migrate your design and one of the channels is used to show how to interface the HOTLink device to the HOTLink II devices.