DATA_RATE is an info-only attribute that is used by power analysis, timing analysis, and SSN tools in the Vivado Design Suite. This attribute provides information regarding the toggle rate of the I/O to these tools.
Valid values of this attribute are:
•Single data rate (SDR)
•Double data rate (DDR)
In non-native PHY applications, the default value of this attribute is SDR. In native mode applications (if the I/O is connected to one of the native PHY primitives such as IDDRE1, ODDRE1, RX_BITSLICE, TX_BITSLICE etc.), the default value is DDR.
The DATA_RATE attribute uses the following syntax in the XDC file:
set_property DATA_RATE SDR|DDR [get_ports port_name]