Quartus® Prime Pro Edition User Guide: Platform Designer
5.2.1.3. Data Format Adapter
| Condition | Description of Adapter Logic | 
|---|---|
| The source and sink’s bits per symbol parameters are different. | The connection cannot be made. | 
| The source and sink have a different number of symbols per beat. | The adapter converts the source's width to the sink’s width. If the adaptation is from a wider to a narrower interface, a beat of data at the input corresponds to multiple beats of data at the output. If the input error signal is asserted for a single beat, it is asserted on output for multiple beats. If the adaptation is from a narrow to a wider interface, multiple input beats are required to fill a single output beat, and the output error is the logical OR of the input error signal. | 
| The source uses the empty signal, but the sink does not use the empty signal. | Platform Designer cannot make the connection. |