根据lpc21xx定时器的功能用FPGA进行编程，可以实现他的相应功能。-According lpc21xx timer function with FPGA programming, he can achieve the corresponding functions.

这是Xilinx AXI定时器的说明手册，对于进行FPGA开发的工程师有参考价值 -The LogiCORE IP AXI Timer/Counter is a 32/ 64-bit timer module that interfaces to the AXI4-Lite interface.

fnd timer fpga verilog