UART 4 UART参考设计，Xilinx提供VHDL代码

UART 4 UART参考设计，Xilinx提供VHDL代码 uart_vhdl This zip file contains the following folders:  vhdl_source  -- Source VHDL files:      uart.vhd  - top level file      txmit.vhd - transmit portion of uart      rcvr.vhd -  - receive portion of uart vhdl_testfixture  -- VHDL Testbench files. This files only include the testbench behavior, they         do not instantiate the DUT. This can easily be done in a top-level VHDL          file or a schematic. This folder contains the following files:      txmit_tb.vhd  -- Test bench for txmit.vhd.      rcvr_tf.vhd  -- Test bench for rcvr.vhd.