在参考友晶科技DE25-Nano 开发板的CD资料GHRD工程来设计my_first_hps 工程的时候LPDDR4A_REFCLK_p手动设置为PIN_B55， 系统却自动跳到PIN_A58：
引脚跳变以后系统编译时会报错：
Error(14566): The Fitter cannot place 5 periphery component(s) due to conflicts with existing constraints (1 I/O input buffer(s), 4 BYTE(s)). Fix the errors described in the submessages, and then rerun the Fitter. The Intel FPGA Knowledge Database may also contain articles with information on how to resolve this periphery placement failure. Review the errors and then visit the Knowledge Database at https://www.intel.com/content/www/us/en/support/programmable/kdb-filter.html and search for this specific error message number.
Error(175001): The Fitter cannot place 1 I/O input buffer, which is within Generic Component soc_system_emif_io96b_hps_0.
Error(16234): No legal location could be found out of 563 considered location(s). Reasons why each location could not be used are summarized below:
Error(175006): There is no routing connectivity between source I/O pad and the I/O input buffer
Error(175022): The I/O input buffer could not be placed in any location to satisfy its connectivity requirements
Error(175006): There is no routing connectivity between source I/O pad and the I/O input buffer
Error(175022): The source I/O pad could not be placed in any location to satisfy its connectivity requirements
Error(175022): The I/O input buffer could not be placed in any location to satisfy its connectivity requirements
Error(175001): The Fitter cannot place 1 BYTE, which is within Generic Component soc_system_emif_io96b_hps_0.
Error(16234): No legal location could be found out of 16 considered location(s). Reasons why each location could not be used are summarized