用quartus设计框图时出现错误,错误信息如下:
Error: Can't place 117 pins with LVTTL I/O standard because Fitter has only 85 such free pins available for general purpose I/O placement
Error: Can't place pins due to device constraints
Error: Can't fit design in device
Error: Quartus II Fitter was unsuccessful. 3 errors, 0 warnings
Error: Quartus II Full Compilation was unsuccessful. 3 errors, 0 warnings