描述
Although the IO_BUFFER_TYPE attribute is set to IBUFG on an input port, Vivado Synthesis still infers IBUF on it.
Is this expected behavior ?
解决方案
Currently the IO_BUFFER_TYPE attribute only supports a value of none.
- IO_BUFFER_TYPE set to none prevents Vivado Synthesis from inserting I/O buffers on ports.
- IO_BUFFER_TYPE set to any value other than none will be ignored. Vivado Synthesis will infer IBUF, OBUF or IOBUF according to the port type.