|Home > Functional description > SDC-600 Interfaces > COM Wire Interface|
For full-duplex communication, two COM Wire Interfaces (CWIs) are implemented between the Internal APBCOM and the External modules of the SDC-600. This allows you to connect the Tx and Rx ports.
When the External component and Internal APBCOM are not in the same clock domain, synchronization is required. This is accomplished with a bridge component that converts the VALID/READY signaling style to the REQ/ACK four-way handshake style. In this case, one or more COM asynchronous bridge modules are placed between the External and Internal sides.